ra. pee reenter ele Bauarels ¥. _ << ome i ae era) ANE Bae) Historic, archived document Do not assume content reflects current scientific knowledge, policies, or practices. ~S Sen GO UNITED STATES DEPARTMENT OF AGRICULTURE LIBRARY A o84Mi — a a i ” aD) Ay . APRIL 1938 a _ DISTRIBUTION OF IMPORTANT FOREST TREES Pe. OF THE UNITED STATES | BY E. N. MUNNS Chief, Division of Forest ndidentes Forest Service Price 35 cents UNITED STATES DEPARTMENT OF AGRICULTURE MISCELLANEOUS PUBLICATION NO. 287 Washington, D. C. March 1938 THE DISTRIBUTION OF IMPORTANT FOREST TREES OF THE UNITED STATES By E. N. Muwnns, Chief, Division of Forest Influences,! Forest Service INTRODUCTION Information on the range and distribution of forest trees has far-reaching practical usefulness in addition to its value to botanists, naturalists, teachers, and others whose work or interests are with trees. It is a valuable tool for the forester, the lumberman, and the manufacturer in search of raw materials. It is an essential element in erosion and flood control operations, and in land-use planning. Indeed, present trends toward better planning and integration of land use are directing increased attention to forest cover, the species represented in it, and the possibilities of enlarging the contribution of forest land to community welfare. In some cases the occurrence of certain species in a region may assume major importance in such planning. It is the purpose of this publication to make readily accessible the information available in the Forest Service on the distribution of 1m- portant forest trees. The Forest Service, for over 30 years, has been actively gathering data on the species of trees present in the United States and the extent of their occurrence. More than 20 years ago distribution maps were published for American pines, and as a result much new information on these and other forest-tree species has been ob- tained. Much of this information has been pre- sented in condensed form in United States De- partment of Agriculture Miscellaneous Circular 92, Check List of the Forest Trees of the United States, Their Names and Ranges. There has 1 The maps here presented have been based very largely upon data collected by the late George B. Sudworth, dendrologist of the Forest Service until his death in 1927. Since his death this work has been carried on as an activity of the Division of Silvics. Many of the more recent data have been compiled by William W. Mitchell, junior forester. 2399—38——1 been a strong demand, however, to have this material available on maps because of the greater accuracy, simplicity, and detail possible in this form of presentation. Even the most detailed published descriptions of species distribution are found to be too broadly generalized when an attempt is made to plot the ranges on maps. A mere listing of known poimts of occurrence would be even less satisfactory. The maps do not, however, carry any implica- tion as to the density, continuity of occurrence, or commercial quality and quantity of the various species. Lumbering, fire, and agricultural de- velopment in many parts of the United States have markedly affected the origina] forest. Although in some instances they may have caused an extension of the range of some species, their influence is usually in the opposite direc- tion, and in extreme cases, such as in portions of the Lake States and the South, they have eliminated formerly abundant species from fairly large areas. It is, however, impractical to show such locally depleted areas on maps of the scale used. No attempt has been made to show the com- mercial range of important timber tree species, since changing demands, practices, and stand- ards in utilization would make such information out of date in a comparatively short time. So many sources of information, published and unpublished, have been drawn upon in the preparation of the maps that individual refer- ence and acknowledgment is not feasible. The sources include taxonomic and botanical handbooks, ecological papers, and occurrence (1) notes by botanists, foresters, biologists, and other workers. However, since not all of the unpublished notes have been supported by authenticated herbarium specimens, an effort has been made to include only reports of qualified observers. Nomenclature of the species, both scientific and common names, and the order of arrange- ment, follow the Check List. Since the issuance of that publication in 1927, certain minor revi- sions in the standard nomenclature have been adopted by the Forest Service. These have been incorporated in the present publication along CHECK LIST—continued Abies concolor Lindley and Gordon. Abies amabilis (Loudon) Forbes. Chamaecy paris nootkatensis (Lambert) Sudworth. Populus trichocarpa Hooker. Ostrya virginiana (Miller) Koch. Betula lutea Michaux. Betula populifolia Marsh. Gymnocladus dioicus naeus) Koch. Acer nigrum IF. A. Michaux. (Lin- CORRECTION—continued Abies concolor Lindley. Abies amabilis (Douglas) Forbes. Chamaecy paris nootkatensts (Lambert) Spach. Populus trichocarpa Torrey and Gray. Ostrya virginiana (Miller) K. Koch. Betula lutea Michaux filius. Betula populifolia Marshall. Gymnocladus dioicus (Lin- naeus) K. Koch. Acer nigrum Michaux filius. Although collection of data has continued for with other minor corrections listed below. CHECK LIST Pinus monticola D. Don. Pinus balfourtana Murray. Pinus resinosa Solander. Pinus ponderosa Lawson. Pinus jeffreyi ‘““Oreg. Com.” Pinus contorta Loudon. Picea engelmannit Engelmann. Pseudotsuga taxifolia Marck) Britton. (La CORRECTION Pinus monticola Douglas. Pinus balfourtana A. Murray. Pinus resinosa Aiton. Pinus ponderosa Douglas. Pinus jeffreyt Greville and Balfour. Pinus contorta Douglas. Picea engelmanni (Parry) Engelmann. Pseudotsuga taxifolia (Lam- bert) Britton. many years, the records are still incomplete. One of the objectives of the present publication, therefore, is to stimulate interest in the acecumu- lation of more accurate information on the dis- tribution of our North American trees. The Forest Service will welcome data indicating the need for changes on the present maps. Location data should be as specific as possible to facili- tate plotting, and occurrence should be sub- stantiated by herbarium specimens when their collection is practicable. TREE DISTRIBUTION MAPS Map no. Map no. Pinus strobus Linnaeus, northern white pine____________ 1 Chamaecyparis thyoides (Linnaeus) Britton, Sterns, and Pinus monticola Douglas, western white pine___________ 2 Poggenberg, southern white cedar___-______________- 55 Pinus lambertiana Douglas, sugar pine________________- 3 Chamaecyparis nootkatensis (Lambert) Spach, Alaska Pinus flexilis James, limber pine____1___-_---_-_-____- 4 CTE es 8 py gn ey a KG 47s OL AO eg PO 56 Pinus albicaulis Engelmann, whitebark pine____________ 5 Chamaecyparis lawsoniana (A. Murray) Parlatore, Port Pinus strobiformis Engelmann, Mexican white pine______ 6 Orfordicedar= ees Hat se ee ae eee eee eee Se 57 Pinus cembroides Zucecarini, Mexican pifion____________- 7 ~~ Juniperus occidentalis Hooker, western juniper____-____- 58 Pinus edulis Engelmann, pifion___________-___-___-__- 8 Juniperus virginiana Linnaeus, eastern red cedar___-___- 59 Pinus monophylla Torrey and Fremont, singleleaf pifion__ 9 Taxus brevifolia Nuttall, Pacific yew_.-..______________ 60 Pinus balfouriana A. Murray, foxtail pine____-_-_______ 10 Juglans cinerea Linnaeus, butternut______.___________- 61 Pinus aristata Engelmann, bristlecone pine____________- ll =X Juglans quadrangulata ese 62 Pinus resinosa Aiton, red pine____.-.2-----_-_---_--_- 12. Juglans nigra Linnaeus, black walnut! ~ 7777777777777 77 Pinus ponderosa Douglas, ponderosa pine_____________- 13 Hicoria pecan (Marshall) Britton, pecan______________- 63 Pinus jefreyt Greville and Balfour, Jeffrey pine________ 14 Hicoria cordiformis (Wangenbeim) Britton, bitternut Pinus contorta Douglas, lodgepole pine________________- 15 ni CKO ya ee ee tak nea emee bees snk ee eee eee 64 Pinus sabiniana Douglas, digger pine___---___-__-_____- 16 Hicorza ovata (Miller) Britton, shagbark hickory__-_____- 65 Pinus coultert D. Don, Coulter pine____.._--_--------- 17 ~~ Hicoria laciniosa (Michaux filius) Sargent, bigleaf shag- Pinus taeda Linnaeus, loblolly pine______- SRS BSS alae 18 barkehickorye= 2s ee see oe aan oe See sae ee eee 66 Pinus rigida Miller, pitch pine____-_-_-_---_-_-------- 19 Hicoria alba (Linnaeus) Britton, mockernut hickory--____ 67 Pinus rigida serotina (Michaux) Loudon, pond pine_____ 20 _Hicoria glabra (Miller) Sweet, pignut hickory__________- 68 Pinus virginiana Miller, Virginia pine-____-___________- 21 Populus tremuloides Michaux, aspen_-________-___----_- 69 Pinus echinata Miller, shortleaf pine__._.---.---.------ 22 Populus grandidentata Michaux, largetooth aspen __-_-_- 70 Pinus glabra Walter, spruce pine____-.---_------------ 23 Populus heterophylla Linnaeus, swamp cottonwood_--_-__- 71 Pinus banksiana Lambert, jack pine_____________-____- 24 Populus balsamifera Linnaeus, balsam poplar-__--_----_- 72 Pinus palustris Miller, longleaf pine_-_---------------- 25 Populus trichocarpa Torrey and Gray, black cottonwood. - 73 Pinus caribaea Morelet, slash pine___~-- ~~ _- Sere se = 26 Populus deltoides Marshall, eastern cottonwood________- 74 Larix laricina (DuRoi) K. Koch, tamarack___________- 27 = Populus deltoides virginiana (Castiglioni) Sudworth, Larix occidentalis Nuttall, western larch______________- 28 southern ecottonwood______________________________ 7d Picea mariana (Miller) Britton, Sterns, and Poggenberg, Salix nigra Marshall, black willow___________________- 76 DIdCiasDnlCOe ne eens ee ase ee eee a 29 Salix amygdaloides Andersson, peachleaf willow______~- Le Peccea, nisora. bink,#: Ted«sSpruce= =... =. ke seek 30 Carpinus caroliniana Walter, blue beech___-_--_----__- 78 Picea glauca (Moench) Voss, white spruce____________-- 31 Ostrya virginiana (Miller) K. Koch, hophornbeam_______ 79 Picea engelmannt (Parry) Engelmann, Engelmann spruce_- 32 Betula lenta Linnaeus, sweet birch__-_-._..______-______- 80 Picea pungens Engelmann, blue spruce---------------- 33 Betula lutea Michaux filius, yellow bireh______________- 81 Picea sitchensis (Bongard) Carriére, Sitka spruce.__-___- 34 Betula nigra Linnaeus, river birch____________._______- 82 Tsuga canadensis (Linnaeus) Carriére, eastern hemlock __ 35 Betula populifolia Marshall, gray birch_______________- 83 Tsuga heterophylla (Rafinesque) Sargent, western hem- Betula papyrifera Marshall, paper birch_..-..-._-_____- 84 NG C kee eee ees a ee see eee eae ees Se 36 Alnus rubra Bongard,! red alder______-___.----------- 85 Tsuga mertensiana (Bongard) Sargent, mountain hem- Alnus rhombifolia Nuttall, white alder__-_._._________- 86 IOGK. .ae SoS SoG e a See ees ee oe ee a 37 Fagus grandifolia Bhrhart, beech___...._.--_---------- 87 Pseudotsuga taxifolia (Lambert) Britton,’ Douglas fir___. 38 Castanea pumila (Linnaeus) Miller, chinquapin________- 88 Pseudotsuga macrocarpa (Torrey) Mayr, bigeone-spruce_- 39° Castanea dentata (Marshall) Borkhausen, chestnut--_ ---- 89 Abies balsamea (Linnaeus) Miller, balsam fir_____----_- 40 Lithocarpus densiflora (Hooker and Arnott) Rehder, Abies lasiocarpa (Hooker) Nuttall, alpine fir__.._______~ 41 FELTING) Gl eens ae a ee Se ne eee 90 Abies arizonica Merriam, corkbark fir____-..---.------ 42 Quercus borealis Michaux filius, red oak________________ 91 Abies grandis Lindley, lowland white fir______________- 43 Quercus borealis maxima (Marshall) Ashe, red oak_______ 92 Abies concolor Lindley, white fir__----_.-------------- 44 Quercus palustris Muenchhausen, pin oak_____________- 93 Abies amabilis (Douglas) Forbes, silver fir-_.----___---- 45 Quercus shumardii Buckley, Shumard red oak_________- 94 alvesnopuvse mindley, noble fir-— =. 252... 222-525 46 Quercus ellipsoidalis E. J. Hill, jack oak______________- 95 Abies magnifica A. Murray, California red fir._________- 47 Quercus coccinea Muenchhausen Abies magnifica shastensis Lemmon, Shasta red fir_______ 48 Quercus coccinea tuberculata sem ne Searet oak -------- 96 Sequoia washingtoniana (Winslow) Sudworth, bigtree____ 49 Quercus velutina La Marck fo = k 97 Sequoia sempervirens (Lambert) Endlicher, redwood_____ 50 Quercus velutina missouriensis Sargent as ea Taxodium distichum (Linnaeus) Richard, southern cy- Quercus kelloggii Newberry, California black oak__-____- 98 POSSESS 5 a ae 51 Quercus ilicifolia Wangenheim, bear oak_________-____- 99 Itbocedrus decurrens Torrey, incense cedar_____________ 52 Quercus rubra Linnaeus, southern red oak_____________- 100 Thuja occidentalis Linnaeus, northern white cedar-_----- 53 Quercus rubra pagodaefolia (Elliott) Ashe, swampredoak__ 101 Thuja plicata D. Don, western red cedar_____--_------_- 54 Quercus marilandica Mere nanser {blackjack Seeks 405 2 Although this name has been adopted in the Check List many well-qualified taxonomists prefer Picea rubens Sargent. 3 Although this name has been adopted in the Check List many well-qualified 4 Although this name has been adopted in the Check List many well-qualified taxonomists prefer Pseudotsuga mucronata (Rafinesque) Sudworth. taxonomists prefer Alnus oregona Nuttall. (3) Quercus marilandica asheit Sudworth Quercus nigra Linnaeus, water oak___________--_--=___ Quercus phellos Linnaeus, willow oak x Quercus heterophylla Michaux filius, Bartram oak | Quercus laurifolia Michaux, laurel oak_____________-___ Quercus tmbricaria Michaux, shingle oak______________- Quercus chrysolepis Liebmann, canyon live oak_____-_-_- Quercus virginiana Miller, live oak____-_---_-_-_------ Quercus douglastit Hooker and Arnott, California blue oak_ Quercus alba Linnaeus, white oak____--~_~_ 2-2 2 eee Quercus lobata Née, valley white oak_________________- Quercus garryana Douglas, Oregon white oak_________- Z Quercus utahensis (A. de Candolle) Rydberg, Rocky Mountain white cake =22= 5222 oF pa ee Quercus stellata Wangenheim, post oak_________________ Quercus macrocarpa Michaux, bur oak____________.____ Quercus bicolor Willdenow, swamp white oak___________ Quercus prinus Linnaeus, swamp chestnut oak__________ Quercus montana Willdenow, chestnut oak____________- Quercus muehlenbergit Engelmann, chinquapin oak __--_-_~_ Ulmus americana Linnaeus, American elm_____________ Celtis occidentalis Linnaeus, hackberry__-___-_-_____-_-- Celtis laevigata Willdenow, sugarberry___-____________-_ Morus rubra Linnaeus, red mulberry______-_-_-______- Toxylon pomiferum Rafinesque, osage-orange____________ Magnolia virginiana Linnaeus, sweetbay_______________ Magnolia acuminata Linnaeus, cucumber magnolia______ Liriodendron tulipifera Linnaeus, yellow poplar________~ Umbellularia californica (Hooker and Arnott) Nuttall, @alifornia-laurel = 2225-22-20 229-8 ==. ee Sassafras vartifolium (Salisbury) Kuntze, sassafras______ Hamamelis virginiana Linnaeus, witech-hazel____________ Liquidambar styraciflua Linnaeus, red gum_____________ Platanus occidentalis Linnaeus, syeamore_____________-_ Amelanchier canadensis (Linnaeus) Medicus, serviceberry_ Cercocarpus ledifolius Nuttall, curlleaf mountain- MahOPany-= kee see eee = == hae ee ee ee ee Prunus americana Marshall, wild plum_______________- Prunus pennsylvanica Linnaeus filius, pin cherry -_- ~~~ ~~ Prunus virginiana Linnaeus, chokecherry _-_-_---------- Prunus serotina Ehrhart, black cherry__--------------- Cercis canadensis Linnaeus, redbud____-_------------~-- Cercis occidentalis Torrey, California redbud______-_-__- Gymnocladus dioicus (Linnaeus) K. Koch, coffeetree_____ Gleditsia triacanthos Linnaeus, honeylocust_-_-__--------- Robinia pseudoacacia Linnaeus, black locust_--_-------- Ptelea trifoliata Linnaeus, hoptree____-__-_-_-------- ge Tlexiopaca Aiton, hollyse=2= 2 22a ese 5 Se or Re ee Acer pennsylvanicum Linnaeus, striped maple___--_--___- Acer macrophyllum Pursh, bigleaf maple_____---_------ Acer saccharum Marshall, sugar maple_____________-__-_ Acer nigrum Michaux filius, black maple_______-_______ Acer saccharinum Linnaeus, silver maple_______-_---_-- Acer rubrum Linnaeus; red) maple: i: -2=-2 5222 = 2 Acer negundo Linnaeus, boxelder_____ .-_______-_-_-_-_ Aesculus glabra Willdenow, Ohio buckeye______________ Aesculus octandra Marshall, yellow buckeye___________- : Rhamnus purshiana de Candolle, caseara____--______ __- Tila glabra Ventenat, basswood_-_-------=.-2-=-+--_-_ Nyssa sylvatica. Marshall, black gum__________-____--=- Nyssa aquatica Linnaeus, tupelo gum______-_-_--_-___-_- Cornus flor;da innaeus, doewood-=22 "== 222272 ee -_—_-" [~ Map 3 PINUS LAMBERTIANA DOUGLAS SUGAR PINE BRITISH COLUMBIA ALBERTA LIMBER PINE Pinus flexilis MILES ° 100 eee a eel 100 MEXICO Map 4 PINUS FLEXILIS JAMES LIMBER PINE WHITEBARK PINE Pinus albicaulis MILES Map 5 PINUS ALBICAULIS ENGELMANN WHITEBARK PINE 10 ANId ALIHM NVOIXGW | ‘SSI eoaoge al r 9 dVIN NNVWITYONG SINUOAIGOULS SONIA OOY SATIN SILUMOPLIGOALS SNUIC- ANId SZLIHM NVOIXKIW 11 MEXICAN PINON Pinus cembro/des MILES 400 Map 7 PINUS CEMBROIDES ZUCOARINI MEXIOAN PINON 12 Pinus edulis Ss | MILES ee \ 100 ° Z200 <=ar ee eet ae Wee wi es a PINUS EDULIS ENGELMANN 2 PINON 13 SINGLELEAF PINON Pinus monophylla MILES PINUS MONOPHYLLA TORREY AND FREMONT SINGLELEAF PINON 2399—38——_3 14 FOXTAIL- “PINE Pinus balfouriana Map 10 PINUS:BALFOURIANA A. MURRAY FOXTAIL PINE ANId ANOOATLSIVE NNVWTXDNGA VLVLSINV SANId Tl dvfl : [ak aoe csr a aly 2 aaapamapes Tam cee Tae ET ood ° ool SAaTIIW O209SIIO SNUigy SINiad S2NOOSTLSiaae eae OANA | | ke ( ‘O3Y0O 1 Bee ee - . 2 i 16 GNId CHa NOWLIV VSONISGY SONId oI 4VWN Sloan ey =e e a - Me Air Ac aay) em Guay foley 4 oor ° oo! ee “VA ‘ . AM ay Saw , x si ‘ eG G W 6 } Sf A = of J oH ZN | TANI Ar ae oe DSOUISAI SNUIG es Gicest P ge he jv ees ( JINIid Gad Se a PONDEROSA PINE Finus ponderosa MILES 100 MEXICO i ‘ Map 13 PINUS PONDEROSA DOUGLAS PONDEROSA PINE 18 IDAHO _—_—. _ —_ . —_—_— . JEEEREY “EINE Pinus jeffreyi MILES 100 a 4 = Map 14 PINUS JEFFREYI GREVILLE AND BALFOUR JEFFREY PINE 19 er | . CALIF. Xe = LODGEPOLE PINE ey aR. : a0 Pinus contorta ae | isooe = Coe 400 $ ~— a esi pe Nig rd PINUS CONTORTA DOUGLAS LODGEPOLE PINE 20 DIGGER PINE PIPUS SQALIPIONA Mi Es ro) Map 16 PINUS SABINIANA DOUGLAS DIGGER PINE ew ——— - SS ra Se: eee | — COULTER PINE Pinus cou/terj MILES Map 17 PINUS COULTERI D. DON COULTER PINE 2399—38——4 GNId ATTIOTAOT SQAVNNIT VGGVL SANId 8T dv ooz fo) oo! SAW DDN3ED2 SNUId SaNichsAtt01e0Oml 23 \ ONTARIO aN Ne INE ~ 7 A WIS. — - — PS. PITCH: (PINE Pinus rigida MILES 200 peat s jee! 7 pee ; oN : Map 19 awe . ; PITCH PINE PINUS RIGIDA MILLER PINUS RIGIDA SEROTINA (MICHAUX) LOUDON 24 Map 20 POND PINE Pinus rigida serotina MILES POND PINE 25 ANId VINIOUIA SaATIW ouoiusB A = SNUlg ANId VINIOYIA Io dV be pes UATTIIN VNVINIOUIA SANId ANId AVATLYOHS Go IVI Oo0g oO ool SITTIN PJOUIYDI SNUIld SNic: SVameLadons WaTTIN VLVNIHOD SANIAD SVxXIL 2 aNId FTONUdS UALIVM VUdVID SONId £6 4VIN SATIN pugo/h Ssnutg ANId 34ONYdS 28 ANId WOVE S3aTIW OuUDISYUODG Snulg SiNilel O17 LYUAG@WNVT VNVISHNVE SONId 29 ANId IVATONOT Go IVI SATIW Siysryod Snuig 4aNiavavy SIS N0 7] UATTIN SIMLSNATVd SANIA 2399—38——5 PINUS CARIBAEA MORELET 30 Map 26 SLAS& PINE PIGS COFr/bGeeg MILES SLASH PINE ol MOVUVAVL S3a0IWw DU/D/4IL| XID F AOVUEVN VL 1G 4IVW HOOM (OW NG) VNIOIWVT XIUvt M O N afe IDAHO | | | at a | WESTERN LARCH ! Larix occidentalis MILES fefo) ° ro) 20 x Se Map 28 LARIX OCCIDENTALIS NUTTALL WESTERN LARCH 33 HONUdS MOVTA Oop ° oo! SIAN OUDIJOLU O2II¢ aonudS “OVI ae as =n DHAANADDNOd. AGNV ‘SNUGLS ‘NOLLIEG (HATIIW) VNVIUVW VaOId == _—_ a ves PICEA RUBRA LINK 34 Map 30 RED SPRUCE FIACEG FUDKG MILES 100 fo) 100 RED SPRUCE 30 HOOUdS WLIHM ponbnjb bedi HO MGaS seb tam BOI LNO fi SSOA (HONHOW) VOAVID yaoId Se: / / eo / = ! 208 (2 ae “a \ 36 ‘a 2 \ ALBERT \. ; AW S\N CALIF. ENGELMANN SPRUCE Picea engelmanni MILES PICEA ENGELMANNI (PARRY) ENGELMANN ENGELMANN SPRUCE NEv, N.MEX. > | | ( ARIZ. 4 | | M4 } BLUE SPRUCE Picea pungens Ne D \ ! : ee MILES Sites ee fe) 100 200 aah : ' «I Se be Gah ee) \ Map 33 : ; BLUE SPRUCE PICEA PUNGENS ENGELMANN 2399—38——6 SITKA SPRUCE Picea sitchensis MILES ie} 400 _ Ee ee PICEA SITCHENSIS (BONGARD) CARRIERE 38 ~~. 4 , | | | | cae tN ee l WAS | Y ital \ MONT. Map 34 SITKA SPRUCE 39 MOOTIWAH NUALSVA (ae ee ae ee al o0e2 ° oo! SIITIW syiSu@pounD2 bens] WIOIWAH NYILSV43 : me ce av OIOVLNO GUAIMUVO (SAAVNNIT) SISNUCVNVO VOOSL Rey MAC. MONT. ail l WESTERN HEMLOCK 3 | | eS EE UTAH \ : | Tsuga heterophy/ia aoe \ x | f iN - ee 0 fees ee ss oe \ CALIF x 2 L-— TSUGA HETEROPHYLLA (RAFINESQUE) SARGENT WESTERN HEMLOCK 41 | | Oc » \ | | MOUNTAIN HEMLOCK Ne eee 7TSUGQ mertens/aria erin i a MI ES + ’ EX. Keo e) 7 400 a ARIZ. | N.M (tao Sa a ee a es ee | ; TSUGA MERTENSIANA (BONGARD) SARGENT MOUNTAIN HEMLOCK DOUGLAS FIR Pseudotsuga taxitolia MILES 100 ° 200 PSEUDOTSUGA TAXIFOLIA (LAMBERT) BRITTON DOUGLAS FIR 43 BIGCONE=-SPRUCE Pseudotsuga macrocarpa MILES ee ee 200 Map 39 -_ PSEUDOTSUGA MACROCARPA (TORREY) MAYR BIGCONE-SPRUCE ud WVSIVd oor saw pawnsjog sagqy Yld WVS1Va { foi LNOJ 45 -_— - =" * ALPINE FIR Abies /asiocarpa MILES NS = 100 fe} 400 a ep THEN: Map 41 ABIES LASIOCARPA (HOOKER) NUTTALL ALPINE FIR 2399—38——_7 ABIES ARIZONICA MERRIAM 46 CORKBARK FIR Ab/jes or/zonico MILES Map 42 CORKBARK FIR LOWLAND WHF Babu Abies grandis MILES Map 43 ABIES GRANDIS LINDLEY LOWLAND WHITE FIR 48 -— — = -_——_—- —_ _ -_— -—— -——"_—- —— = a4 ee a Wit LR Abies conco/or MILES 100 ° 200 SS —————E Map 44 ABIES CONCOLOR LINDLEY WHITE FIR 49 | | ! ALBERTA BRITISH | y : | We ata ne ae cae i (S % \ & - aN Se \, | N ee danse oes yee ae _ ae? WASH { g | oS | L. en C.L SILVER’ FIR \ / {IDAHO Abies amabilis MILES woo 9 = SILVER FIR ABIES AMABILIS (DOUGLAS) FORBES WASH. 5 IDA HO OcRaE Gr ! | poet Piso 8 a | CALIF. NEV | NOBIEE Rik Abies nobilis MILES 100 ° 100 200 a ae ee | er See Map 46 ABIES NOBILIS LINDLEY NOBLE FIR CALIFORNIA RED EIR Abves magnifica MILES fo) 200 ABIES MAGNIFICA A. MURRAY Map 47 CALIFORNIA RED FIR o2 SHAS TASRED AF iin Abies magnifica shestens/s MILES a 200 RES Va Vee OO eee ran [Ae | Map 48 ABIES MAGNIFICA SHASTENSIS LEMMON SHASTA RED FIR 53 | IDAHO NEV. | | aX | aS | CALIF * N. ee . D< | See % ~ : | RON \ ARIZ. Ss BIiGEREE Seguoia washingtoniana oe MILES 100 ° 200 rE ————————————E——__—ES) oa Mae 49 ae SEQUOIA WASHINGTONIANA (WINSLOW) SUDWORTH BIGTREEF 2399—38——-8 | DAHO NEV. | \ \ RE DWOOD s > Sequoia sempervirens ( Milt Ess / 100 oe) 200 - ee 7 - ——— eee Map 50 SEQUOIA SEMPERVIRENS (LAMBERT) ENDLICHER REDWOOD 50 SSdudAO NYUAHALOOS IG 4vVIW SaTiW WNYDILSIP U/NIPOXe], SS3IYdAD NYSHLNOS GUVHOIt (SQAVNNIT) NWOHOILSIG WOIGOXVL eo 56 INCENSE CEDAR Libocedrus decurrens Mi Bes fe) 100 OG Map 52 LIBOCEDRUS DECURRENS TORREY INCENSE CEDAR UvVddoO ALIHM NYUAALUON SO4VNNIT SITVLNACGIOOO VLOH f + saan mL | £ -_—~ eo iz ere ed f ‘ None O07? fe) foley me ON 7 SITWw syojuspis[20 olny ys / i / HVd3O FLIHM NYSHLYON /. ., , phoma ee: - 57 9) ! WESTERN RED CEDAR | Thuja plicata MILES 2 400 ees eee [eee Pee | HUJA PLICATA D. DON eae Mar 4 OREG. | 1 IDAHO WESTERN RED CEDAR SOUTHERN WHITE CEDAR Chamoecyp oris thyoides MILES 100 ° 200 ‘ Map 55 CHAMAECYPARIS THYOIDES (LINNAEUS) BRITTON, STERNS, AND POGGENBERG SOUTHERN WHITE CEDAR 60 ALASKA CEDAR Chamaecyporis nootkatens!s MILES : 100 Oo 400 ONL ON ee en ee ae eee | ' « Map 56 CHAMAECYPARIS NOOTKATENSIS (LAMBERT) SPACH ALASKA CEDAR 61 \ pe a et ee Ly See ee a \ i. ) ! / / XY, OREG. f | | | Patil. 5° =, Mee Rode Be ec 8 1 _- = | | | | | | NEV. \ RS ALIF. ~ C \. x SS NI a aa 7h a4 PORT ORFORD CEDAR ~ Chamaecyparis lawsoniana oe MILES 100 fe) 200 fe Map 57 CHAMAECYPARIS LAWSONIANA (A. MURRAY) PARLATORE PORT ORFORD CEDAR 2399—38——_9 WESTERN JUNIPER Juniperus occidentalis MILES 100 JUNIPERUS OCCIDENTALIS HOOKER 62 —— oo Map 58 SASK. | WYO. COLO. N.MEAX: \ > -_— e.—_— 63 UVdaO day NUALsvVa Tee sh VWILODS WAON LEA Se sy 5 ee | Ne 7 i WV | MUN \ A QNV1 T )-GNQO4MIN a eo ~| a eS 4 Sa off 6g dV J02 SIA ouoiuiban snuaadiuap YVQ390 G3Y NYs1SV4 SQOAVNNIT VNVINIDUIA SOYUAdINOS 64 me CALIE PACIFIC. YEVY Taxus brevifolia MILES 100 200 a eS ee Map 60 TAXUS BREVIFOLIA NUTTALL Re Se MONT. le we PACIFICO YEW LONYELLO 002 fe) okey) Saw peveuin suojbap LANYALLNG OIUVLNO SQOAVNNIT VGHANIO SNVITNOL 66 LOANTVM WOVTE SOGVNNIT VHDIN SNVTOOL UAHA VIVTAONVYGVOAS SNVIONNEG X o9 IVAN 002 (e) ool ‘ SATIN \ ozQNbuosponb suojbipy Gy \ ‘ oubiu suoj bor gg V \ Wale LAN AWM SHOW ae \ \ hes ce HIOORIA PECAN (MARSHALL) BRITTON 67 PECAN fycoria pecan MILES 100 ce) 200 Map 63 PECAN 68 AUMOMOIH LONYALLIE NOLLIYA (NIGHNADNVM) SINUOWIGAXOO VINOOIE v9 AVIN f rare LiyUS Ulin 00 ro) oo} SaTiw SILUAQJ/PAO9 O1AODIL/ AYOWOIH LANYSL LIG 69 AUOMOIH AWUVADVHS oOoe oO foxey S3a7IN DZOAO YNIAOO/H/ AYOMOIH MYVEOVHS G9 AVN NOLLIYUG (UATTIN) VLVAO VIAOOIH 10 2399—388 ) 70 AYOMOIH AUVANVHAS AVAIOIG 99 AVI INAIDUVS (SNITIA XNVHOIW) VSOINIOVI VINOOIH odz g oo! saw OSOIMIDO/ OI4ODNY ia AYOMSIH MYVEOVHS 4VI19IE 71 AYOMOIH LONYAAOOW 002 SITTIN OG/O DIMODIH AYOMOIH LANYAMOOW L9 IVW NOLLIYVG (SQUVNNIT) Va@1TV VIHOOIH N i~ AYOMOIN LONDId 002 (e) OO SIIIW pugolh OIsJOdILY x= OP Ol mbes! (IN ike 89 dV LAEMS (YATTIIN) VUAVIDO VINOOIH 73 >. | AS Foe ulus tremuloides isa ea ALA \ GA \ MILES X ie / A / wu U 4UU } am Sheeashan ee ON : ns > a \ Map 69 POPULUS TREMULOIDES MICHAUX ASPEN (Distribution of aspen is shown as one species, although dendrologists separate Populus tremuloides Michaux from Populus tremuloides aurea (‘Tidestrom) Daniels, the latter extending westward from Saskatchewan to the valley of the Yukon River and southward in the western part of the United States and Mexico.) XAVHOIN VLVINGECGIGNVYD SATOAdOd Nadsv HLOOLADUVT ; OL IV i : ne ee ji ( ia is an ae aN R Q X65 \ 714 \ } Was — ee AG \ es $23 ea Vv | \ questa See Al ) v1 / Ets a b = j SYx ‘ rah k st f ( | fone Sau E at 7) ( | ( pjojuepipuodo = snjndo_y das x \ Cas | Bc Hee eee J \ / NaddSVY HLOOLSAOYV 1 yh SS \ | ) o “aS S, if [r= - Sys) \ ! 4 ABS ! | “YO — al . SNYY » so — - le, = ‘i vmor\ SRIEIN ig S i ae — as ey 5 = & | “YQ Ss NNIW) a es cee = ge M .f .* Va 'N OIUVLNO 75 ' ‘ ONTARIO \ QUEBEC / \ ' \ SWAMP COTTONWOOD Populus heterophylla MILES ° 100 200 Map 71 POPULUS HETEROPHYLLA LINNAEUS SWAMP COTTONWOOD " [2 = Z aks ‘J xrals SASK EY & cles Mi is eee coe BALSAM POPLAR —_~ : n Populus bolsomifera l aes ALA \ GA a Pp ee 100 0 a0o Map 72 POPULUS BALSAMIFERA LINNAEUS BALSAM POPLAR | BLACK COTTONWOOD WW &\ | } a a ee aes a Populus trichocorpa ae OS a t | MILES ce Sai 100 =O 400 =~ CALIF. \ N. ME” SS eltea : ARIZ. | (Le ie ee Ne 2 = — % + sees POPULUS TRICHOCARPA TORREY AND GRAY Dae BLACK COTTONWOOD (Distribution of black cottonwood is shown as one species, although dendrologists separate black cottonwood (Populus trichocarpa Torrey and Gray) from the northern black cottonwood (Populus trichocarpa hastata Henry), the latter extending northward from the California line and into Nevada.) 2399—38——11 ONTARIO | QueBES ( EASTERN ee COTTONWOOD LA gl Populus de/to/des MILES 6 400 ia ee ee Map 74 POPULUS DELTOIDES MARSHALL EASTERN COTTONWOOD ©@ SOUTHERN COTTONWOOD Fonulus delfoides virginiana MILES ° 100 200 Map 75 POPULUS DELTOIDES VIRGINIANA (CASTIGLIONI) SUDWORTH SOUTHERN COTTONWOOD 80 MOTTIIM MOVIE oo02 oO oo1 SATIN oubiu x1j0S MOTIIM AOV 14 94 IV OIWV LNO TIVHSUVW VUOIN XITVS 81 MOTTIM FVATHOVAd Ss sapiojopbkwp xijos % MOTIIM JAVSIHOVad NOSSUGANV SUCIOTVADANYV XITVS 82 HOWdaA ANT 82 dv a02 10) ool SaTIW OUDILII/0409 SNUIAAO DZ HO4SagGd 34N19 y) Rar V OlNVLNO Pr Nn L- YaLTIVM VNVINITOHVO SANIAHVO WVddNYOHdOH HOOM “MH (UDI) VNVINIOUIA VAULSO 62 IVI OO¢ fe} ool! ; San CNY ‘W114 ( i if TTTT ‘ _ 2 < DUDIUIDAIA. BANSO WY SENHOHdOH OIHYVILNO 84 —— —__— : = at { 7 | | ~ Sic: ; ISS IE x i | / GA. ie Ac, | ) aay \ eos 0 sl a ~ ENG ee R S Sse BAS BETULA LENTA LINNAEUS DMEF Dimer Betula lenta MILES ( MAINE | SWEET BIRCH 85 HOUWIG MOTTIAA ~/\AL Saw DEYN] DJNeEG HOYIG MOTISA OOS WINON 18 dV SOIlId XAVHOIW VALAT VIALaAG 2399—38——12 86 : ; - ae = \ N DAK. \ <7 eS —4 Fes \ ONTARIO i —— a] pees i anes \ e : : Ze 7 ne eee i ee Sas ane [FS OA ~ (coe SSN S.DAK, | NE BR KANS ; OK] 3 : | TEXAS | Sh RIVER BIRCH \ Betula NIQra . ) ee. hy f Ae é a \ S “> FLA. ‘ DOs yO te A eneimnee \ ( — Map BETULA NIGRA LINNAEUS 82 RIVER BIRCH 87 HOU AVUD €8 AVI 00/2 a) oa smIIIWw oyayindod ojinpag HOI AVWYS WiLoos WAON TTVHSYUVW VITOAITOdUOd VIOLA aN OIYVLNO ‘ | | ! | | | 88 fee ace ae vem | \ ae PAPER BIRCH \ ’ \ ‘ NAN te Athearn a Betula papyritera MILES 100 (e) 200 400 eee Map 84 BETULA PAPYRIFERA MARSHALL PAPER BIRCH 89 FF e | { al; as WASH + -\ MON : RED ALDER . | | Alnus rubra - = ee “ MILES ° ALNUS RUBRA BONGARD ; RED ALDER 90 WHITE ALDER Alnus rhombifolia MILES ° 100 Map 86 ALNUS RHOMBIFOLIA NUTTALL WHITE ALDER HOWE LUVHYHA VITOTIGNVUD SADVA coe ° oa SsSaTIN pyoypuosb snboy HOSAG VILOOS WAON Zs Yee = / 5 pay : Q282aNn0 NIdVOONIBO UAW (SOAVNNIT) VIINOd VANVLSVO RR AVIN | Vala) Oo ool . 0 SaTIW aval DJIUNA DAUODISOD NIGVNONIHD 5 Oe | mee ie OOF a oe ne el Cx ce} J pe SN LOANLSHHO SITTIN DJZOZUIP NIAUOZSOD IE TVNGES 3. 68 4VIN (Ore eSNG NUSAVHMUOE (TIVHSUVW) VLVINAd VANVLEVO 2399—38—_—13 94 ( OREG. 7 IDAHO ( NIE CALIF, x eo el TANOAK - ! Lithocarpus densiflora ) ae: ™ @ ‘ MILES o lew e 100 . 200 f ~~ ' -— ent oo Map 90 LITHOCARPUS DENSIFLORA (HOOKBR AND ARNOTT) REHDER TANOAK 95 MVO Guay 002 ool Oo Saw syYDeIOG SNIUEN/ AVO G43y 16 IVA SOVMaA XOAVHOIWN SITVaNOE SQOUNTAD 96 > ARK: eee, ne 5 | x CAS W : ( ; \ ys TE X A S \ / | SS An MISSES 1 GAIA am ? ; a ~ ) = | ma EY a j ‘ Fai) S Ee = ; 3 Csl Ce 1 INS a \\ eee Re XS RED OAK Pena YW jSI22 ; : is gate Ne a \ Quercus borealis maxima 7 MILES y > 100 °o 200 Wy lay FLA. Se 6 | AS / ys Map 92 QUERCUS BOREALIS MAXIMA (MARSHALL) ASHE RED OAK NaSOVHHONGOW SIMLSATVd SHOUANG uVO Nid 6 VW fo) ool ie SaTWw ee é : susqjod sno4ane?) aa yas " WIV | SSI ie ss ! \— - pee ee} \ ! YWO Nid A = | ; | << By) se Vi ! aS 002 mr at oS —-—~ J as : rey Ww oP NNGSL PTR Ste ‘SNYY ‘aa3an —~, Yq s ae serie 98 HVO dau GHVYWOHS AATHON NGUvVWOAHS snowdad : 66 IV 002 oo}! ° SAIN MP4IOUNys SNIDAAN(Y AVO Gay GHYVWNHS 99 AVVO MOVE ooe SYOPIOSAI 2 SNDUEN!S VO: MOVE Sattw: 2 oo! OlYVLNO TTIH ‘f° SITVdIOsdITTE snowgdnd 100 t— ee. | i age a NEBR | KAN OKLA a Sa TEXAS / eae en Rigas pe ee fr SCARLET OAK GMB Quercus coccinea eed ZG Quercus coccinea tuberculata MILES QUEBEGS és ae t 1 Uf ) MAINE \ Sf fae Sy = VE WL AE \ ey, \ \ \ Map 96 QUERCUS COCCINEA MUENCHHAUSEN QUERCUS COCCINEA TUBERCULATA SARGENT SCARLET OAK SCARLET OAK 101 ! QUEBEC ONTARIO \ BLACK OAK BB Quercus velutina EZZQuercus velutina missouriensis| MILES (e) Map 97 QUERCUS VELUTINA LA MARCK BLACK OAK QUERCUS VELUTINA MISSOURIENSIS SARGENT BLACK OAK 2399—38——14 102 CALIFORNIA BLACK OAK Quercus kelloggii MILES Map 98 QUERCUS KELLOGGIIT NEWBERRY CALIFORNIA BLACK OAK 103 ONTARIO | QUEBEC Lf x +4 Poh MAINE BEAR OAK Quercus ilicifolia MILES ° Map 99 QUERCUS ILICIFOLIA WANGENHEIM BEAR OAK 104 VO dau NYAHLAOS O0OL dV RES a SE a Sa | 0oz ° oo! SIIIW puqnsa snoasang >AVO GsayH NYESHLANOS SQAVNNIT Vaan snoudnad 105 AVO Cau dNVMS TOT dV °o O01 SAIN oiyoya0pobod = vuqn4 sna4an() AVO GSA dWVMS GHSV (LLOITTA) VITIOMAVGONVd VudaAN SsNONAAd 106 HMVO HOV(MOVTA HAVO MOVIHOVIEA 002 fo) SAW (9YSO DOIPUD/[ADL SNIIAND [XV DOIPUOJIIOLU SNI4ENO YVO WOVCWOV 1d c0t 4VW HLUOMGAS IAHSVY VOIGNVTINVW SNOUTAD NASOVHHONTOW VOIGNVIIAVW snougnd 107 VO UALVM SNAVNNIT VUDIN SA0NRNG 201 AVN | fe) ool ~ SSW Ny bIBIU SNIEN?) ood 4VO YHSLVM | eae SV¥3L 108 HAVO WVULYVE VO MOTIIM vOT AVI sOllld XAVHOIW VITAHAOUALEH SNOUAND X SNAVNNIT 801T9Hd SNOUANS SIN py Ahydouajay snosend ¥ AVO WVULUVE KG soyayd snasandg YVO MOTIIM Hi Listal 109 VO THUNVT GOT 4VIN SaTIW DIJOJIAND] SNILEND yWVO> TSEaAV"l XOAVHOIW VITOAMIUAVT snowTNd 15 2399—38 110 | QUEBEC ONTARIO § WANE a A 7 en ; a \ : ‘ \ ( nH\ | Ne : jan a | / N iG BSS. QNaY 5) -_— Tt Al. Re ee NJ SHINGLE OAK Quercus imbricorio MILES 100 fe) 200 ———————_———EE SS) Map 106 QUERCUS IMBRICARIA MIOHAUX SHINGLE OAK 111 CANYON LIVE OAK Quercus chrysolepis 100 o MILES 200 a eS Ee Map 107 QUERCUS CHRYSOLEPIS LIEBMANN CANYON LIVE OAK 112 4AVO GAIT "S TSI VAWVWHVS La 801 4VW YATIIN VNVINIOUIA SNONTNAD SATIW DUDIUIDAIA SNIAANY) MVOr se Nia 113 = —- a: =- —= S¥*=———o——- —S ed CALIFORNIA BLUE OAK Quercus doug/asii MILES 100 - fe) 200 (LEST eS 2 SUE VE ee Lae | Map 109 QUERCUS DOUGLASII HOOKER AND ARNOTT CALIFORNIA BLUE OAK 114 34VO G@LIHM ° SATIW Dg/O snoueNngy AVO ALIHM OTT 4VNW SOAVNNIT VaTV SN0NTNDS 115 VALLEY WHITE OAK Quercus /obata MILES Map 111 QUERCUS LOBATA NEE VALLEY WHITE OAK OREGON WHITE OAK Quercus garryana MILES 100 200 QUERCUS GARRYANA DOUGLAS 116 Map 112 | | | ( Ere OREGON WHITE OAK ROCKY MOUNTAIN WHITE OAK Quercus utahensis MILES 100 ie) 200 Map 113 QUERCUS UTAHENSIS (A. DE CANDOLLE) RYDBERG ROCKY MOUNTAIN WHITE OAK 2399—38——_16 118 aAVO L80d PLT av WITHNADNVA VILVITALS SQ0uand oo72 oot °o saw DIOIJELS SNIABND MwvVO 1LSOd “vO Hod XOVHOIW Vd4VOOUOVAN SNOUTA SIT dv ‘ \ a 7 " ooz 2 ae AB 001 n. Wea ears Roa x ek DAIDDOIODU SNIIANC mAVO aera aly) OIYVLNO “HVO GALIHM dAVMS MONUATIUIM LOTOOI SADUTAD OTT IVI S3aT7IW Gos ee AdlIODIC SNIUAaNE MVO ALIHM dWYMS Hh rs | ie ef, \ GB 12 yorNANIW / ‘ ‘ Va o4aaganos | OlYWLNO 4VO LONLSAHO dWVMS LIT 4vW ) SOUVNNIT SONIUd SQ0NaaD 002 5 ool SAW Q — ‘GN snuid sn 94ENC) WVO LAN LSAHD dNVYMS aS ' yi ae ONTARIO | OUEGEC / : CHESTNUT OAK Quercus montana MILES 100 ° 200 Sn Sn ee Map 118 QUERCUS MONTANA WILLDENOW CHESTNUT OAK 123 HVO NIdVNONIHO OTT dV NNVIITAONG IDYaaNaTHaAnW snoudnd Sari x nbsaquayyenu SNQUEang) YVO Nid VNONIHD ae \ 4 oer. Saige 4 Aen 2 Ns iy : Sreeen Se je N. va \ OlWVLNO | = ees Aa | \ NNW f—- er = es —~ _ a ee Re WI NVOIYUANV OZT 4VIN SNO4VNNIT VNVOIHEBNY SNWTO SATIN puDdIUaWO Snwifn W1sa NVOIYSNV OISVLNO 2399—38——17 125 > oc ar lL ia SM O L a Celis occidentalis MILES 200 Map 121 HACKBERRY CELTIS OCCIDENTALIS LINNAEUS AUAATAAVDAS Gol AVN sJTIW o20bIAab] $12/29D AYN aEdVONS MONUOTIIM VLVOIAUVT SILTHO AUNAATAW Ady SOAVNNIT Vudanyd snuow st dv = 1s T rol oo: i) Saw Dugn4 snuoyy AYYAGINW Gay 127 128 FONVYO-ANVSO Sere Pol AVN (RR eens eee eee ears | Saw” wnsayiwod uoshxoy 00d 0ol1 SONV a> s9Vso0 AAOSaNIAVY WOUHAAINOd NOTAXOL ay 129 ONTARIO SWEET BAY Magnolia virginiana MILES 100 fe) 200 1 Map 125 MAGNOLIA VIRGINIANA LINNAEUS SWEETBAY VITOND VW YaaWnoNnO SQAVNNIT VLVNINOOV VITONOVIN 9oI IVI 002 ° oo: SATIN D{IDUILUN ID DI/OUBDYA/ VIIONSVW YSAEWNOND 5 Bf) _ - —— = 130 - =. -_—_— -_—~—_. 131 | o/ | yy. 2 i \ QUEBEC ) ONTARIO x } = : aon ¢ ei \ \N oN NES “MA ea eet bee \ , ) ons YELLOW POPLAR Liriodendron tulipifera MILES 100 fe) 200 a nn Map 127 LIRIODENDRON TULIPIFERA LINNAEUS YELLOW POPLAR CALIFORNIA - LAUREL Umbellularia californica MILES 100 O 200 (of) ee eee Map 128 UMBELLULARIA CALIFORNICA (HOOKER AND ARNOTT) NUTTALL CALIFORNIA-LAUREL 133 oe N.DAK. | QUEBEC oe Ron q Raye ase A Z oa ) aie fr ¥. vt. S DAK I a ~ ; mEXAS Sassafras variifolium MILES ao 100 0 200 go ; | 7) Map 129 SASSAFRAS VARIIFOLIUM (SALISBURY) KUNTZE SASSAFRAS 2399—38——18 134 AZVH-HOLLM SQAVNNIT VNVINIDUIA SITAINVINVH O€T IVI ( eee wae, o02@ Oo ool cain DUDIUIBIIA SIJ/ DU DUIOL/ VAZVH-HOLIM OldVLNO 135 ONTARIO RED GUM Liguidambar styraciflua MILES 100 200 Map 131 LIQUIDAMBAR STYRACIFLUA LINNAEUS RED GUM 136 HUOWVOAS cel AVN SQOaVYNNIT SITVLINAGIOOO SONVLVId 002 fe} ool SATIN SIJDJUZPIJIO ~SNUDIDi/g AYOWV OAS (oe , ele & Pat te eee NY 137 AUMAAAOIAYAS sel dV SNOIGHW (SQAVNNIT) SISNAGVNVO UALHONVIFWNY 002 (a) 001 SIIIW SISUAPOUDND J32IYOUD/IUY AGEGAGESAODINGAS OIlYVLNO 138 ne a a a ae ae ee ee CURLLEAF MOUNT AIN-MAHOGANY Cercocarpus /edifolius ico 9 MILES 300 Map 134 CERCOCARPUS LEDIFOLIUS NUTTALL CURLLEAF MOUNTAIN-MAHOGANY WOATd GTIM GET AVI [rae alee onamaceeel oo€ °o co) S3aTIW DUDDWIABGWO Snundd WATd ATIM OVavLNO TIVHSUVIW VNVOIMANV SANNUd 140 SOIT SQAVNNIT VOINVATASNNGd 8SONNUd AUATHO Nid ties \ a) \ WV ee Sart SVX3L Lae, Sete A) Se ae Og pa xk =e ywav | a ) ie oe NNSL afl ame yo | Z1yy os ae = f—===-= == eS = | \ (Sd Pe iS | eae | rs elteey sang eons One eee eee boruprjKguuad snunszy aw mv 4 \ NYY a ee ae | 0 BY ) On09 / / b> AYYGHO Nid orp ee ee ee | : ; es | vin / \ —~ i a \ - : ‘YyaaN Io ae j nee | = ge am i a i ; ' Ss ! | YVva'S | AM j ee , A Ley ee i Oe : : Cm A mE \ ae =o ia) Ce | Ps NS ; ‘Ss ge 5 Lm lO VOB 141 AUUYAHOAWOHO LET AVIA SQGVNNIT VNVINIDUIA SONNY SATIW DUDIUIDIIA SNUNA Ad daHoayOunS 19 2399—38 142 AUAMAHO HOV ITE SE1 dV ‘o0oe ool ssw DUYO4eS SNUNIY AYYAHD YWOV'1G OlYVLNO LUVAYARY VNILOUAS SANNUd CERCIS CANADENSIS LINNAEUS 143 ve < Q Fas 3 REDBUD Cercis Canadensis MILES 100 fe) 200 Map 139 REDBUD 144 Se) IDAHO | SS UTAH CALIFORNIA REDBUD Cercis S©GClCenIGIsS MILES 100 ° 200 Map 140 CERCIS OCCIDENTALIS TORREY OALIFORNIA REDBUD QUEBEC / ie Uy ed Ja— \ / ~ ; oo 5 ne tay TEX Ne laAS | 5 AS \ : A | . f ) a —— PUN eer Aa re f anyon, ed yt esyle SN 4 5 Sane ma ae Ln \ r\ g & &, ye Re Se Ue }s o! v wt ‘ COPnPEET REE A Wp 4 y \ | EE \ ' Gymnocladus ad/io/Ccus oy MILES ) iRexe) fe) 200 oe, GYMNOCLADUS DIOICUS (LINNAEUS) K. KOCH Map 141 COFFEETREE 146 LSNOOTATNOA SQAVNNIT SOHLNVOVIUL VISLIGHID Gr AVN e oo Pee — ac | — ro [aa 002 fe) 001 ; Ne ———— 0 (ESRI fe oes foe ( Saw \ | / SUX 31 SOYZUOIOIA2 O1S21P3/9 i iS MOOnNASNOR 147 LSNOOT MOVIA SPT AVIA vas Co ene saris “oa aoe yee saniw? of a een eae! f plIonobopNesd DIUIGOe¢ 3 eee Peay ) ‘ Sh QO MOY We z } SQNAVNNIT VIOVOVOGNHSd VINIGOU 148 Za Yel Wi COLO. WYO 4/7, jew WR PER a i ees theg 22 SX 8 we 4 Lf rer or 002 ° oor smn WNAGNS JBON/ SIdVW GSu SUX 94 “NI 102 rs} Yeon cao ae ——~ae_ WYO's fee hee a GIN | eT ee —— OlWWVINO oNv7IGNOO3N\aN x ONTARIO BOXELDER Acer negundo MILES 200 ° Map 152 BOXELDER ACER NEGUNDO LINNAEUS 157 MiG (oe OHIO BUCKEYE Aesculus glabra MILES 200 Map 153 AESCULUS GLABRA WILLDENOW OHIO BUCKEYE 2399—38——21 158 TIVHSUVW VUGNVLOO SATNOSAV GATHONA MOTIAA PST AVN oo7d SaTIW D4OUD{IO SNINIS Ay ~Ahayoned MOasiaX _. ta 5 | = ita ( f \ SVXIL Se eee \w No, ‘VIMO SNV™ ‘UGIN | « HOI ane 7 cea == AN \ ea ‘ | \ ‘SIM avOES \ 3 ‘NNIW | ; \ 159 CASCARA Rhamnus purshiana 100 euiEes 200 ees pt lf) Map 155 ‘ RHAMNUS PURSHIANA DE CANDOLLE CASCARA 160 adooMSSVa LYNGLNGA VUAVIO VITIL 9ST dV fo} SaIIAN pugoy6 oijiy GOOMSSVa OIYVLNO 161 WOAD MOVIE TIVHSUVW VOILVATAS VSSAN LGT IVI SIATIWw poizoajxs pssky WNASD MOV 1a 162 WAS OTA AL 8ST Iv SatmiWw po1zonbo osskyy WND OVWAdNL SOAVNNIT VOILVOOV VSSAN 163 | 5 ee S. A = \ QUEBEC ; oa NTARIO \ oe. MINN. j 2 : 3 Se, / ae oO VS A, — if if MICH. TEXAS DOGWOOD Cornus florida 10° ° 200 Gate 1 _—! Map 159 CORNUS FLORIDA LINNAEUS DOGWOOD 164 | ONTARIO | | \ GA. , | GREAT RHODODENDRON % Rhododendron maximum MILES Seton eee Boe 100 e efe Map 160 RHODODENDRON MAXIMUM LINNAEUS GREAT RHODODENDRON MOUNTAIN-LAUREL Kalmioa latifolia MILES [eme} ce) 200 [kee Map 161 KALMIA LATIFOLIA LINNAEUS MOUNTAIN-LAUREL 2399—38——22 NOWWISad ad | [a aad Pe ane oe ae be eet ers} OO0€¢ oO oo! SATIN vuviuibsin souhdsoig NOWWIS& 3d 166 c9T AVN SQUVNNIT VNVINIDUIA SOUAASOIA BLUE ASH yi Fraxinus guagrangu/ata \ = Wee 7 \q, | 200 100 (o) Map 163 FRAXINUS QUADRANGULATA MICHAUX BLUE ASH TIVHSHUVW VHOIN SONIXVUd HSV 4OVW1a : vO AVN 002 Q ool SATA oubiu SNUixo4f HSV Movild 168 OINVLNO 169 HSV GLIA M GOT dV SQ4VNNIT VNVOIMENYV SONIXVUS 002 o oo Saw DUDIDIUAWO SNUIXDA} HSVY SALIHM OIUVLINO A ae Co as Bs ra ‘ a? \ ae | ae a Aaba Yyvq S 170 % HSV G@LIHM AMON LTA GIdvad VNVAXOWLIUA SANIXVUd 99T 4VIN “ V14 002 io} SITIWN OUDSUOUY4/IG =SNUIXOI_{ HSV JLIHM SYOWL1IE HSV aaa TIVHSUVW VOINVATASNNGd SANIXVUA LOT dV ee = = y éy qs | : =e. Gol ] iz ; pas aan v4 ‘ ae aN ; ooiuoyfsuuad SNUIXO44 ‘ so Oh. SSL eee sta! HSV Q4duy Ba wane SNe \ OlNVLNO ia a: 172 HSV Naaao LNADUVS (NSISOVHMUOU VLVIOTONVI VOINVATASNNGd SONIXVau 89T 4VIN ———— ae 002 0 001 ; Dp, QJO20UL/ DOIUDA|ASUUEA SNUIXOL Saw ts HSV N33Y9 Ol VL NO N > 7 | Soren a \ > (Ewe Yi NVUW ' pees / } _ Jf See ob. PS Saas Pare OREGON ASH iS) 5 o> ind) we 9 ”n 3 < x e lis Map 169 OREGON ASH FRAXINUS OREGONA NUTTALL 2399—38——24 174 HARDY CATALPA Catalpa speciosa o MILES Map 170 CATALPA SPECIOSA WARDER HARDY CATALPA Map no. Abies amabilis__.-_-_- 45 Abies arizonica_.-.---- 42 Abies balsamea___-__--- 40 Abies concolor____----- 44 Abies grandis____-_-_- 43 Abies lasiocarpa__----- 4] Abies magnifica__—_- ~~ 47 Abies magnifica shasten- S 1S eee eae eae 48 Abtes nobilis_______--- 46 Acer macrophyllum_--- 147 Acer negundo_...----- 152 Acer nigrum___------- 149 Acer pennsylvanicum __ 146 ACO TU UNUM a5 = 151 Acer saccharinum._--_- 150 Acer saccharum------_- 148 Aesculus glabra___-_- ~~~ 153 Aesculus octandra___-_- 154 Al deraredie = = sae 85 Alderawhites == = 25- 86 Alnus rhombifolia_——_- 86 FAN ADO RS ARO 85 Amelanchier canadensis. 138 Ash, Biltmore white___ 166 AS hii lac kes enue erie. 164 Ash blues «82s os = 163 Ash; -oreen: (252-5225 168 Ash; Oregon=22=_ 222 2- 169 Ash ired teenies sane 167 Ashanwhite® sates ass 165 INS DONE ees See nae 69 Aspen, largetooth_____ 70 Basswood Ssees25-6 = 156 IBecchseias tees Se : 87 Beech, blue_..=-._-_-- 78 Betulovlentat ae 80 Betula lutea____-_-_-_- 81 Betula (CORO ee eee 82 Betula papyrifera____. = 84 Betula populifolia____- 83 Bigcone-spruce_______- 39 Bigstrees= ee = 49 Birchserayes <2. =.--- 83 Birch; paper-s.-.=-..- 84 Birchsrivers-= 2225 82 Birch, sweet_________- 80 Birch, yellow_________ 81 Boxeldér 2222 =< 22-2. 152 Buckeye, Ohio________ 153 Buckeye, yellow_______ 154 Butternutss 2-5 _..-... 61 California-laurel_______ 128 Carpinus caroliniana__- 78 Wascaraeter <9 0 ee 155 Castanea dentata______- 89 Castanea pumila__-_--_- 88 Catalpa, hardy______- 170 Catalpa speciosa___---- 170 Cedar, Alaska________ 56 Cedar, eastern red_____ 59 2399—388——24 INDEX Map no. Cedar, incense________ 52 Cedar, northern white _ 53 Cedar, Port Orford____ 57 Cedar, southern white_ 55 Cedar, western red___- 54 Celtis laevigata_______- 122 Celtis occidentalis_____- 121 Cercis canadensis___ ~~~ 139 Cercis occidentalis___ _- 140 Cercocarpus ledifolius.. 134 Chamaecyparis lawsoni- ONG See eee 57 Chamaecyparis nootka- tensis:s eee 56 Chamaecyparis thyoides - 55 Cherry, black=2 22.22 138 Cherry. pines 22255" 136 Chestnut. 32 2= eee 89 Chinquapin__._...___- 88 Chokecherry___-_____- 137 Coffeetree_________. 141 Cornus florida_____ 159 Cottonwood, black ____ 73 Cottonwood, eastern ___ 74 Cottonwood, southern _ a5 Cottonwood, swamp-_- ral Cypress, southern _____ 51 Diospyros virginiana... 162 Dogwood___-_______-- 159 Elm, American ________ 120 Fagus grandifolia______ 87 irs alpine. .2..Oak, Bartram s2-2225-— 142° “Ogk, bears s..-5-=2=—= lb? “Oak. black.2_-=2=2-.2 131 Oak, blackjack_-_-_----~- LSS Oak vbun = see eee 141 Oak, California black ~~ 121 Oak, California blue___ 130 Oak, canyon live__-_-_- 35 Oak, chestnut____.___- 37 Oak, chinquapin------ 365) (Oaks jack. 232-—222=— 67, eOak-claureliee 2a eres 645 Oak lives ass —2 see (175) Map no. 68 66 65 63 66 64 67 68 145 142 79 144 145 61 62 62 58 58 59 161 28 PH 28 52 131 127 90 143 126 126 125 147 149 151 150 146 148 123 161 134 123 158 157 104 99 97 102 115 98 109 107 118 119 95 105 108 Oak, Oregon white__ _- Oak, red (Quercus bore- alis maxima) __ ~~ ~~~ Oak, Rocky Mountain Oak, shingle______-_-- Oak, Shumard red____- Oak, southern red____- Oak, swamp chestnut__ Oak, swamp red__--_-_- Oak, swamp white____- Oak, valley white_ —_ _- Oak; .water.....22222-- Oak, white__________- Oak, willow-___--- Osage-orange______- Ostrya virginiana __~ ReCa ne ai Saseee hie Persimmon. 222225222" Picea engelmanni-_-—_-_ ~~ Picea glauca. .--.--=== Picea mariana__-—----- Picea pungens___------ PeCed. MUU ee = = Picea sitchensis_—-_---- Pine, bristlecone___ __- Pine;.\Coulter.-25<5-=- Pine; digger =. .-=25.22 Pines foxtaile 29 = 22222. Pine! jack=a2.225e5.2= Pine; Jeffrey=.=.2=2--- Pine; limber... .=-==-~ Pine, loblolly = 223-222 Pine, lodgepole -_----- Pine, longleaf___-_--_-_- Pine, Mexican white___ Pine, northern white___ Pine; pitch 22 === 2252. Pine; pond==422 2. -=- Pine, ponderosa-_-_---- Pine sredus-. 6 = se Pine, shortleaf_______- Pinesslashe 22:25 55 Pine wspruces== ess —= = Rinevsugarss. 2222 — Pine, Virginia________- Pine, western white____ Pine, whitebark_____ PINON 2 eee eee Pifion, Mexican_______ Pifion, singleleaf______ Pinus albicaulis______- Pinus aristata = 2253. Pinus balfourtana__ ~ —- Pinus bankstana____-- Pinus caribaea_-____-_- Map no. 112 93 wore Re ui ow Soon —_ w or Map no Pinus cembroides_____- i Pinusscontorige a5 =. 15 Pinustcoultenpee 25 2a 17 Pinus echinata_______- 22 Pinusredulise = 225. - 8 Pinus flexilis_..._ =... -- 4 Pinustglabra==2=-222=. 23 Pinusjeffreyts---=--=2 14 Pinus lambertiana___ ~~ 3 Pinus monophylla___-~- 9 Pinus monticola_____ ae 2 Pinus. palustris. <2 222- 25 Pinus ponderosa___-- ~~ 13 Pinus reswnos@2 = = 12 Pinus r1gid@s = 22. = 19 Pinus rigida serotina__- 20 Pinus sabiniana______- 16 Pinus strobiformis_-—-—-- 6 Pinus strobus= 22 22 e 1 Pinus (@ed@s22 eee 18 Pinus virginiana. ----- 21 Platanus occidentalis __- 132 Phimeawildics 225 = 135 Poplar, balsam -_-_--__--_- 72 Poplar, yellow______-_- 127 Populus balsamifera — ~~ 72 Populus deltoides___ ~~~ 74 Populus deltoides_ vir- GUNIANO = =e Ese 75 Populus grandidentata __ 70 Populus heterophylla _ _~ Populus tremuloides __—- Populus trichocarpa__- . Prunus americana --—-— ~~ Prunus pennsylvanica - - Prunus serotina_—---~- Prunus virginiana. ___- Pseudotsuga macro- Pseudotsuga taxifolia___ Ptelea trifoliata_______- Quercus alba____--.--- Quercus bicolor_______- Quercus borealis__..__- Quercus borealis maxi- Quercus chrysolepis___- Quercus coccinea______- Quercus coccinea tuber- Culatas 2 a Quercus douglasii____-- Quercus ellipsoidalis ___- Quercus garryana___-—- < Quercus heterophylla. Quercus tlicifolia______- Quercus imbricaria.___~ Quercus kelloggit_.__. —- Quercus laurifolia_ ~~~ Quercus lobata______- - Quercus macrocarpa_--_ - ile Map no. 71 69 73 135 136 138 137 39 38 144 110 116 91 92 107 96 96 109 95 112 104 99 106 98 105 111 115 ¢ 6 Quercus marilandica ____ Quercus marilandica Quercus montana______- Quercus muehlenbergit_- Quercus nigra___----_.. Quercus palustris __-_ ~~ Quercus phellos_______- Quercus prinus___----- Quercus rubra________- Quercus rubra pagodae- Quercus utahensis__—_-- Quercus velutina______~ Quercus velutina mis- SOUTLENSTS = =e Quercus virginiana. __- - Redbude 22. a2 =: =e Redbud, California____ Redwoods aetna Rhamnus purshiana__-- Rhododendron, great _ Rhododendron maximum Robinia pseudoacacia__- Saliz amygdaloides ____- Sala nigna= =. Sassairas=) Soe aae Sassafras variifoliwm --- Map no. 102 102 118 119 103 93 104 117 100 101 94 114 113 97 97 108 139 140 50 155 160 160 143 TU 76 129 129 Map no. Sequoia sempervirens ___ 50 Sequoia washingtoniana. 49 Serviceberry-__________ 133 Sprucewblack=== === 29 Spruce. blucke === 33 Spruce, Engelmann____ 32 Spruce, redsass=5 sees 30 Spruce, Sitka________- 34 Spruce, white_________ 31 Sugarberry 9.455" 5e5= 122 Sweetbay 252-222 eee 125 Sycamores eee 132 amare cka==s === 27 Rano alka iere eee meres 90 Taxodium distichum- -—- 51 Taxus brevifolia______- 60 Thuja occidentalis _____ 53 Ehaujoaplicatas == eae 54 Miaiglabra==s5 =a 156 Toxylon pomiferum_--. 124 Tsuga canadensis______ 35 Tsuga heterophylla____- 36 Tsuga mertensiana____- 37 Ulmus americana___--- 120 Umbellularia californica 128 Walnut, black________ 62 Willow, black.-______- 76 Willow, peachleaf_____ Ue Witch=hazelee sss 130 Wews esc cai sa eae 60 U.S. GOVERNMENT PRINTING OFFICE: 1938 aman — eo ——— = —EE -- --— _— a eee as ANS it tia nae \ ies ie a) f)