. rind 4 ) ' ‘ ’ 7 . . OS rig ai 7 ‘ ‘ : Se a a 4. ' ' ' ‘ ' for . ‘ PN ten Alls ‘i : ot ewe HOC SA ak peu ASA oes Rie Dae tr es TEE Eo Eloy. 4 ; , few ’ : : . ‘ ‘ i Vawee \ 6 . ‘ ‘ are st : i t . ' id ' ' : ¢ ‘ a ee! y eae Ww * Ro : . - . ‘ a ‘ My Aaa vo ete ake ‘ . ata yl any . nn vais OR a or) Ps t . . ‘ , ve ’ oa ts q ' ns so . ’ Pat Se epee a aa. , . ‘ . ‘ ‘ vat ‘ + te tS ra . on ie i a i, . vty “ . . i % i ; . 5 oe wwe err Pras 7 . o ‘ . , : : ' ' ve a . ’ ' ‘ 4 é F 2 ’ 3 i ‘ ‘ ’ weet r pone ‘ . 5 ere ow eye ' is j 2 Mer rae ¥ i Fol a Dh aeedlll an Bk tet aol ast : sche sr eae eo ee Pete af LEM ote Sek e-e tee ee Khe A ies tre § etd oa, CAPM ATE AL FCT L. a IP Bad BF 0A OE et eae Bete ced weg ae Sek Ae aa pin gi dag! ot PTE yew ope PROT LE LOLLO : Ob ER POOPY, aaa hicks iti prorat ' ‘ ead Cb 0 Seo nd Fete ee eee rey es 4 ( . La ee are eg i . Pe ees eee Bares ke ona , soy Be Beno” = pele : : ; Pr ate eda 4 ‘i Eg Pi Jt + 9 . ‘ o , Ca ageitgse PT ip goe age Eee © 7 Cece ri CAR ME RR A ge TEP ya 5 ‘ eo V6 BA ets ope we TP eT ID a a LR ee re igen os ; ibis bf ‘ toe Reet wth fry We. ee yea Seem Te ards a Kae) ey Acer J ter iy rs BARR PAL: orsis we Hadad ee APER ERS et . ha oe is i . s ‘ . : . on +r $ " ' eddie : . toa . Cans ‘ ‘ ie he ny “oe ae | , ie ae pies” i | Wis ae STATE OF ILLINOIS DEPARTMENT OF REGISTRATION AND EDUCATION NATURAL HISTORY SURVEY DIVISION STEPHEN A. FORBES, (Chief BULLETIN OF THE Illinois State Natural History Survey URBANA, ILLINOIS, U. S. A. Vol. XVIII CONTENTS AND INDEX 1929-1930 PRINTED BY THE AUTHORITY OF THE STATE OF ILLINOIS STATE OF ILLINOIS DEPARTMENT OF REGISTRATION AND EDUCATION NATURAL HISTORY SURVEY DIVISION STEPHEN A. FORBES, Chief BULLETIN OF THE Illinois State Natural History Survey URBANA, ILLINOIS, U. S. A. VOLUME XVIII 129-1530 PRINTED BY THE AUTHORITY OF THE STATE OF ILLINOIS STATE OF ILLINOIS DEPARTMENT OF REGISTRATION AND EDUCATION M. F. WAtLsH, Director BOARD OF NATURAL RESOURCES AND CONSERVATION M. F. WALSH, Chairman WILLIAM TRELEASE, Biology JOHN W. ALyorp, Engineering Henry C. Cow es, Forestry CHARLES M. TuHompson, Representing Epson S. Bastin, Geology the President of the University of WititiaAm A. Noyes, Chemistry Illinois STATE NATURAL HISTORY SURVEY DIVISION STEPHEN A. Forses, Chief H. C. OESTERLING, Editor ScCHNEPP & BARNES, PRINTERS SPRINGFIELD, ILL. 1930 (41847—600 ) CONTENTS ARTICLE I. THE NATIVE AND NATURALIZED TREES OF ILLI- NOIS. By Rosert BarcLtAy Miner and L. R. TrEnon. (98 plates, AD BEX te UERES|) bcc Cel ODO s co sseae pete ce feerrarahcs. came ic cesta ce ssters lececete SLR ny acetone 1-340 IER sys OUR ame ectre eek Tesboe Sseie haat >, iuckrelten eticaiion erik ohare, bh de a tuber er ance $70, eh ea es henalenes ree feet 3 IES IO Mee LAU ES iiss ctucteyteg ere a kueec theca: cio rateaye are ee AUR isoe! Bn Ae arte. nee eo Be) She Braliaan 6 Herat OUT GLO Mise te ccits: 3 syier ee een acne aoe a wl ree hrakers. wie R URN oa Get ono ated -ouekD. outeleamte ders 9 PXelaiowil de Srts) yd ct nSd eadiailen sd nie aie shoo tiwlel a) tice tine ve sem eve aliases aye aiayrst Sv etiere Ma eyeresn 14 Mer CRtOMmbMeR trees: LOr IEMeMrOUM MSGS ONG scpsreuete <)or.¥01/-) 2Uerateleiete: s12)/spelialin tarenaite 15 WESGrip MOM sol; UNE nGPeCle Sete -wiclrerinchents civ eminence ciate ore tisinds sreeWerdererieyens 23 Botany and forestry: sea Oballiyar Ol nuRCESG aneis ovcdsra aeraislerpiesh Siotetorecee Ute lov uel s)tsatte: Ghetiatleue sven ame « 287 Morest Imterest amd LONESE WEESCMVALIOM. fee 6 ec. 5 poe eels iets oe ee ois eis ote 325 IGT Gy eater rss 2 7 teense neon ce raralar set oshicrisaay uaa Tene, eeanles GS aNtaseke al aia! mn ele ehiauis erate euhiarays 335 ARTICLE Il. FALL AND WINTER STONEFLIES, OR PLECOPTERA, OF ILLINOIS. By THrEoporE H. FrIson. (77 text-figures) May, TEAS)» 25h. LRRD BREED b. Ca ne OO SERCO RR aire ee Steet NDE rg irae en 341- SUMMIT EL Tay are eevee eee hey tarreuee oe benes eetey a0 Wialce oP ew oiageah nc) Suhcy Suave severe w x sisi. s,dGe~e.3 8 auesesuaycueles PNG RIO WILE CLEMIVGINLG paren ies Muska stele carer tatee, clorere) ico "ure sonaliehe cialis ve see aie ae eae au ROMO 2 Yama cere enti mortuetel oc HAM Reel eetoroncel ova Bla forah we Phrcaebec oltre Fuse tagevone Sun's Silence SSASOM Ale CAGHIUSUTINEGINEG marae wactenene ice « cyarstacuenewiel sicieeato eteh oeuehs Mules ays obs EAD uae hOMEM CES sawae mciederetsWBs 6. «0 hcrcfacoisusnsicyeicss:G sar av voswe: &opetisbeushemwen cee FET eMO MES alti ts Gia: UCU Sle rtemen wreayel uate) suc) sr lei scettesten el Acar cydhorar ars iecid ieuteltapiarietle Wook Jel abou LEC CM Sperm ewe OL eee NSRORTRTSEA lace iis Comer oils ue BWC TEs, el endhes bandera tal tie sire onc Uae tauren as VIAN amare eee eee etter tears CEN rn cceor as age cues oP akeuss ©. waedsne, e apet-eule aulemertoiteus ter cteys Ova MOSHELON ey wortnel eee Sie ae cave Too shear archaers wate odihancgeia Mena s Sioa RLS She Miscellaneous aaymstiments) “cesta cae stepcierere-s: atts) sine wie avelensi aie ce eel ele TEXESYETTCTU AER BS Srcy.o) ecrenprotego ‘Geo CRMORDECH CIRC. RONG IERRERES OORT CeO MEER Cea RRO aoa tat ISU OMES) Oe Walesa a0) OIG yo dickesors clo oie o cacror eo eaea he ee ORO nO ce Lc TGC GUTINO ME Sere cranc hohe onetegeu keen rasta vs iehene er attsreuete! ene eau saviunyarauiclins S:eicivaris@iyellerrene site HMMS STC Crm Se rpeyeiceee tenes cir releas asco taaa nat Srclertnc io oasis ersten alctisis cvtelrstelle su autos WEVS TO PMTCT eer R Cones er menu han die nel ote atte arias coches! cs, ells sclarionera, 8 suepteye Mis INIOVSIMIGTUUS a reece Merci tity cece teal Gl eho Ghose aires, ite tuck Uelka: ey etiamel aendivaeqry oe RMT SS ry aera re reens pe ciatess) oy eer earaesterogen i cco it ice erabyaue cnn aincehe-siale, wratielieveters Aeporvonnny nal —saovaaleinellehivareom pens oc es ak Gen no Ah) OG CIO cD GO UIs olo ot ARACTNTO PLC TayeRe eC LE temun yr palecs eer cteuetoneh elected ohsicar oar als Sit eueifollssrana “suelo. ie) eatslieNess=uafh= IBAREKola Aoi INI AO OINE > 5 Biotgiate Aoletdio cic en CRehe: Grune Sicnelcnd oecepucicmce ns a ceclorere ocvGhr Th everaneonaveroaven BEN ONiGS hs Gasca acecetono Cole Bree Gielen OnenE Ga) Brcurrseins Aint choi Ecucemeeraric SLOP MOM Lele yoxas Merwin AEMUUISH sjenetsencieteiens syetercusucl su stevistaiens cllete ls 'o alalicie se is)'eete (ele ECS S OEE CMC Alals cee ccy shay ish este tears usrelisl a el tees eis ceca) aretsilel(eustieieliel eh le = Keys to the species, with descriptions of new species and nymphs.. TMAGIMNTG OWENS, PATON Sine A oeisicio ole cos cic eneed pines GeevoratonceenG cranttis tr ibichin engin ct SHRM AG IAC. INP TAO MS) oss ogen sonadeor apoE hoor om a ticd odes Der JNM GxeR ON TNIEL (CHRRSEGNE Sao ono os on Coo Op ano Gh mean roe icc a o.oo ao ic IDEUGTEa SEONG. Fam. clo on 6 Depo oe o prole cls cro mrad roo. oolororicr> coloiciurc (Gaijonaitiey ESCWEIE 9S.6.6.6 igs otto aia a 0 pina nid Gib old Crromnrcic miaicioso.o o apec pic esr BISON OMI “Gio om ouc eh ewee a OIA a 6 oO Da core Oo ackn: Datncea Ue Or IOS Oia. FuoLe =] for) CoO — CW tw & Ww +] or) vi Titinots NatTurRAL History SuRVEY BULLETIN ARTICLE III. EPIDEMIC DISEASES OF FRUIT TREES IN ILLI- NOIS 1922-1928. By L. R. Tenon and Giveert L. Srour. (30 text-fig- ULES) GAM SUSE OSU es ch aloes ice cts oie Seles Ben taba etc the ctv Niele ne ae 411-502 Ft TOGVUCELON ae ce oe reer eee ae OS oes Sous cs ola wo ohe'e a oaths ae Like eto cn 415 General "Met MOGs egecre sets kis pee a eben bikin ae ela te te ea eta ae 416 AMAL SIG OL mOaweveteubteesta ee eel Tae aio eyes fecuke Sie alse eeieleehie Slane! make ete ae 420 LAMTATON A OL sO ae Arc uals keto oes Rak CRED alae 6 o eho 426 E'Tudt ENGe mais ceruDUPrOMle: coat ons k-pes tye sls wee wel acess Je) 6.506 Sone el ela a aes 2 427 AN Ple *diSCASGS) ie we mec cos. wus a, 5 eee ok aco eee whe i wcdie uae ener taal See ae 429 SCAB he once sh oes ba oe tasers aie at ap ter Migs eee Se Mes RE ea eens 2 acta aba Sa ee 430 RTO UG Ta cesta pace tener ares ietes os ala peas ICI ay bard wea. She ralske ens lates siesta Rey 439 BUR GCKEROt Gr cece © cre icon hetigs« ople sails aridie ob eon eto See 446 OUT SVE Ae athe lic cacatotesan Ba laces ite oir hie ae 9 Bvaleahiehans pte ones ene RaAR UST eattE A e teie aea 450 RUSE eae arene ea biel ace aa ald Stee settable Ee ea tcte a RO eNaN cei oe eee 453 Summary of apple disease data. ss. 38..cic.e sre pis pclae thee ene see 456 IPGA I GISEASESI 2 sic a Si ices ohn ob ate Scan Soc alone ate Seige telGivauel baa es Rae taD Caee 469 Pear spt vy Maye Netra bie Lees loot eae dy drat caeiny peartea elotel trong rtce eee eee 469 IPGACHTEISCASES Sia het. tn erase ls BRIS Liew eae feast aang & a wit site Sioa ie erates ae 472 g BYE ON (iO lat 10) Rabe aM esear eeeep ee ier ae Sect mr eee SPR UNE A Rema SP IMINE TRUE Sone hc. - 472 Bacterial shot-Woles axe ee ey ee eek ae er ei oe ear 475 PRC AT=CUT IS Stresses chased crak stn re enact dies at Shee elee ern o' are eae UTA eS Cees age Chea 477 SGA eleeteace ttt ie mie erc orale eeecersre te Chere ovens shan di lagen Aes ie a ene eee 479 Summary of peach disease dataic.. os ces ead sins Seek wee eee hee le ee 481 CHErry SANG “pli GISCASES 6 cos fee-oterevs eh sc eceaved are ee Je os one oe ee ev ace oucheiet ene end ene 487 Data on) cherry and, plumvdiseases....2 2.) <= 5. oasa clare ee rss eee 487 SUMiMNany ol sdatawateateat Beep Acie Sonos eisin eecaie tind mr core One nee 492 FCG CATTOMIA ETON sos gorse Boe, che eed opr OES ere RLU ae iota Gms aw mine lak cra ati ae 500 TANGER Seatac era st, er tats tit ta aks rotate TAS anes Nae he kh oe 503 UA VEUIEREA LeAtoee bt cee tcre Gate eer ee Cia ey sian ezan cm cate tau she eiadtr ss She, o ehere goal Seatinr cas) cre ee 509 STATE OF ILLINOIS DEPARTMENT OF REGISTRATION AND EDUCATION DIVISION OF THE NATURAL HISTORY SURVEY STEPHEN A. FORBES, Chief Vol. XVIII. BULLETIN Article I. The Native and Naturalized Trees of Illinois ROBERT BARCLAY MILLER Chief Forester, Department of Conservation and L, R. TEHON Botanist, State Natural History Survey PRINTED BY AUTHORITY OF THE STATE OF ILLINOIS URBANA, ILLINOIS 1929 (ATURAL S/STORY SURVEY ‘SEP 9 1969 4 ie Ce OE E\A% ie ye By tat ¥ STATE OF ILLINOIS DEPARTMENT OF REGISTRATION AND EDUCATION DIVISION OF THE NATURAL HISTORY SURVEY STEPHEN A. FORBES, Chief Vol. XVIII. BULLETIN Article: The Native and Naturalized Trees of Illinois ROBERT BARCLAY MILLER Chief Forester, Department of Conservation and L. & LEHON Botanist, State Natural History Survey PRINTED BY AUTHORITY OF THE STATE OF ILLINOIS URBANA, ILLINOIS 1929 STATE OF ILLINOIS DEPARTMENT OF REGISTRATION AND EDUCATION A. M. SHELTON, Director BOARD OF NATURAL RESOURCES AND CONSERVATION A. M. SHELTON, Chairman WILLIAM TRELEASE, Biology JOHN W. ALvorbD, Engineering Henry C. Cow Les, Forestry CHARLES M. THompson, Represent- Epson S. Bastin, Geology ing the President of the Univer- WittiAM A. Noyes, Chemistry sity of Illinois THE NATURAL HISTORY SURVEY DIVISION STEPHEN A. ForBes, Chief H. C. OESTERLING. Editor ScHNEPP & BARNES, PRINTERS SPRINGFIELD, ILL. 1929 1493—3M wee: FOREWORD The following report on “The Native and Naturalized Trees of IIli- nois” is a part of the product of a forest survey of the State begun by the State Natural History Survey in 1919 and ended, as to the collection and organization of its data, in 1925. The senior author was a member of the State Survey from its commencement until June 30th of the latter year, and towards the end of this period he assembled the data of this report from all available sources, including, of course, those of the Survey itself, and prepared and filed for publication a comprehensive manuscript, to which some additions were made by him after his appointment as Chief Forester of the State Department of Conservation. In order to make this the best possible product of the botanical resources of the Natural History Survey and of the University of Illinois, it was submitted, for critical revision and completion to the junior author, who was favored with the unstinted advice and assistance of Dr. William Trelease, pro- fessor emeritus and former head of the Department of Botany of the Uni- versity of Illinois: and with all these agencies in cordial cooperation, it can be confidently oftered to its public as an authoritative compend of the existing state of our knowledge concerning the trees of Illinois. STEPHEN A, FORBES T34! I i . ‘ e# A . i - » 4 ‘ wo { ‘ n « . 5 : ; : H Sad ; . x ) . - ‘ ‘ ute “se 4 t . ‘ ’ y 7 ~ . « ~ < ‘ f 7 A ; ? ns y , < , 7 “ iu, y x Sy = an | i aod ‘ ets CONTENTS PAGE PUD PER GEO SSS Oa oS ey rae a ae 3 PPS OR gL ALCS eee stot es Magee at ee Ieya vals peel a, Sha/s cles Wids oes, ahs 6 [NPISRECCH STE (2 SN SP Ie ON Sg Ana oe oe PP 9 Pee OVP COPAMICHIUS! Keane. | oil grc-cog oo ralen aie toes ts die Sell aces aa 14 ievarontie trees tn tie TOUT SEASONS $: 5<.sh0 1a. cues 15 Wegeripiicieais LE SPECIES wi toon oe cate nis ss OS Se eke e © 23 Botany and forestry: Pi em oetiiyanOn Oh CCSh. ary. he tesco oben see +o tree! wo = els 287 Forest interest and forest preservation..,.......... 325 | aig esc ea ek a ee er ee EU: rns eens! Sy oe Plate LIST OF PLATES * number T . PINUS» SCLODIS POVOICO ean Yo ics acc: cot why ag msmleon lo abate oleae ceca 2. VPINUA Baw Eslagia ala EIN) os is secre rs in ects areca aia ce ete ee 3; EADS CChInataArCyY ClO WwW Pane) oo co%s 05 oe Oa Earnie cy hak souk eee 4) TGA vie NAVI CLA ae POA TAC) oyc-ateie aie. ooetdig «sale oho VSie bit a eee 5/ *Taxodium -distichum «(Bald Cypress).o: 255 vs cs ious bee 6. Thuja otcidentalis® (Arbor Vitae) oo. 2s oa bien eee {<% VUBIDOTUS Wirsiniana (REG Cedar) icqcerct cies lees Liv eye cts nies arene S$." POpulse tremmioes “CASNENs.2 2. suk ooo wee ces eee 9.* Populus:erandidentata (Poplar) «..2%. ois naicn onan ince cas ee 10. Populus heterophylla (Swamp Cottonwood).........--.....5- 11. Populus balsamifera var. virginiana (Cottonwood)........... Wi AIX DieT aw CELACK / WaAlLO Wi )iccs bios are care le ore se ini cate erereeee is. Salix: amyerdaloides: (Peach: Willow): .:.)2 < sc. «wie & cloner nie esl 4: Juglans (cinerea (Batterie) i. toc io se ein etolats ole laidte ego: eee ee 15s Jueians: nisras(Black. WV alnutyics: 0 oc. Aci ek feet eeeeete $6o Canva PECAN’ GEOCAIN 207 sich oieicis aie eGo latins coche thoreeeen hi ae Li; Oarya- COrdiformis eC Pignut) ssc anescd be oa set oes chee eee TS. 2Caryaraquatics (OW ater HICKOry) is: 2hsc ee as so hlee oe oe 19. Carya- ovata (Shazbark: Hickory): <2 0).)socsecacd.ss oe keene 20. Carya laciniosa (Big Shellbark Hickory).................-+. Zee BO ALY a al Dau VOKOIY )isse cS) x ote Geo ee ee 2a Carya SlaDre, GEISTIUE) baie, slece vars oe eo ee OR cobs edt eee 25.) SearTya Ovals. (OVal pPistiitt ics aco. alls cols Wane se ee 24... Carya Buckleyi (Buckley's Hickory) so... 25 ce se ne ere mS ekw e ieee zo. Carpinus. carolimiana (Horn beam)... . .)ccincs «sea eee 26; Ostrya:: yirziniana (hop-Llornbeam):. s.cndecw snk on cee Za etula Mio pate GG «EIN el ryets te oe Soonkc Paha acess Cae ee ee ee 28. “Betnla papyrnitera (Canoe. BirGh)) = £.c ae. cee ce eee eee 29: MalisveTanditolia sCBCECH) AS. nies ec nk ne oe eee o0;7-, Castanea scents tai ( OMCSTMUMt io c4,4 vic a ors -s.arcelnashs oe ieee ae 51. Quercus borealis: var. maxima’ (Red Oak)... .\6..2222-2 fo oe ac. “Quercus snumarasCRed Oak) soo. noma cok nt ee eee oo, Quercus ellipsoidalis » (Black (Oak)..0% 2.2. 5. 0.60080 es ieie ot; (QUCTCHS uDALU SEIS oO OUI) Ciera cot paid cans Sraecie 6 eG bie areca eae ne So. 1QUEECUS-Velutina ACB IACK) Oak) ac ss cuwuste ccatres sapere ote adh Soiree 36;--- Quercus Tura (oDANISW OAK) )csc.cs clk cocleeieni cc sc oackuss nce cee 37. Quercus rubra var. pagodaefolia (Swamp Spanish Oak)...... oor Quercus MarilandicayCblaACKy GAC) vis ccc a ocd vies Sew bis vie eee ae 39. ‘Quercus Phelloss GWillow /Oak) 2 .cecn. oss pee Pte te oo eee 40... Quercus imbricaria “(Shingle Oak) v0) 2. as 6 vs wwivirae vatceles 41) Qucreus, macrocarpa (Burr Oak) s.% 1.02202 euce ohio 425. QUCTCUSMIyTAta wCUOVELeMD MOA). Gecia sic ares cies ee Ad Quercus stellata *UPOst# Oak) aan ess ass lee heey oe eae Lee 44> SQuUereus (ala. CVV MIbG OIC) iis overs toler nel ctsteen we cancer Ae eae 45. Quercus bicolor (Swamp White Oak)....................00- 46:. "Quercus prinus, (Basket Oak)isw. <. cestode oe ck ek ee Oe *“Ixceptine. INos: 53; 2c oly, ol eipus s0e) 00s ac hds) oOo. Os AD a Oe, the plates listed above are from C. C. Deam’s “Trees of Indiana,’’ and are used through the courtesy of Mr. Deam and the Indiana Department of Conservation. 47. 48. 49. 50. 51. 52. Do. 54. 5d. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70. 71. 72. 73. 14. 75. 76. UIE 78. 9). 80. 81. 82. 83. 84. 85. 86. 87. 88. 89. 90. ile 92. 9 o. 94. 95. 96. 97. 98. Quenrcusmontana "(Chestnmt Oaks)e a. wees «scence «see choi eeaierene 151 Quercus; Muehlenbersiils @vellow sOaks). 2.5... seks eee eee oe eee 154 Wilmiustamericanan ((Wabibem lim) \s. ¢ cae > wns vie on ie awiels Sie pe Sou ctereyoucee 157 WIMUS = TacemoG Sais (EVO Gls SHIM) vers ces 5 tise av eesiiora te aee coe clue wan onelotelereke miele 160 WWI ea USN eis = (CNNYEY OWOXO)) cle Ganeciecs 3 oleic tae Senet cet oreeaeee MIC EC Ie Heme icin arets ok 161 Ulm Se tila CSlUp Sr ye, HH lind) Reverie ats, sic) casters, ©, cuche. aiaeccchoias une cen ce pisteenree 165 lA Meramagilael Gar GV AUC rea) repkecis exer el cpetereisuars a1 eo steneve ease A meacetere: Gosia) ieee 167 Celtismocerdentalis (Clack Derry) Rocio scscle clcicicoos « wo emeuhe Sige ceeraenns 170 Celrismlae valsartan (Uae TE Valie sesh cels eactete es, cccks coe treks oc aioe ein reniees 172 NMOKUS MTU Ona se GEC OM IVE CII) ensrat riches ova ssg eesea shee meee eel oro ee 175 Maclunaypomitera, (Osave Orange). o.). cna ¢ sie doa teless ssc p tnws ee cuehai ene 178 Magnolia acuminata (Cucumber Tree)....................-c0eceee 181 Minodendronstulipiterass(Mulipy ree). vs 2 « fis cain shale elo cneeeiene 183 PASIAN aAO TH OM ar Cera WWD ea Wa) taiaeilel sbepce shes cueic. cen tone Giese ous oakavecn omiceusremmncens 187 Sassatras Onrciniales(SASSALLAS) sc. «cleus e2% sw sivealeetises «eda eheblne 190 Miqudambar styraciiua (Sweet Gum). ....0.....05. 2 ne es eon dees 193 Elatanus occidentalis! ((SyiGalmMoneln sect ste. coe eee elie soe ote ene oiieter 197 MaltisenOoensisis(Cra b MADD) rss cece creo anete sels sy overs Gus ald ists GS wlteneta ew ekaiorene 199 Sorbus americana (Mountain Ash)................... 0.002 eeecveee 201 Amelanchier canadensis (Service Berry)....................ecc0ce 204 Crataegus Phaenopyrum (Washington Thorn)..................... 207 CratacsussCrus-calli (Cock-spur) Thorn) osc... ee oe boas nae ae 208 CHAGAS ShalMolilinsien HEE CME Wa) barat oyecerce. e eiles yale citgva is Siatnes #1 a Sues ers Malas ereen osha 209 Erunuseaniericamea (VV ald MEUM) oe cietske «6 2 cise elepele am coy cye ano auees ceens 211 Promises hortulana, OWaldeGoose Plum) i. civ... on.e ses os os eee clee nsec 214 Prunus, pennsyivanica, (Wild ed Cherry) >. 02.5... 6: oe .n. Secures 215 Prunus viresimiana. (Chokes Chennrys) sar csk cess cis sha ot ie cae ener cere 218 Prunus serotina: (Wald) Black Cherry). o-cr.: oe sic te cerns cyan ose orteloe 219 CereismcaAnadensis) <(GREGDUG)R ss ix ctetcrchevses tye tse nce otattes setie w oe alee hosters 223 Gymnocladus dioicus (Kentucky Coffee Tree)..................... 225 Gledutsiay triacarnthosy (Honey WOCUSE)) fee eres «creo see vale we chs a oneteiens 227 Gleditsiaraquatica: (Water OCUSE)l oi cr. crs 6 eis see es cls. . a0 nines cones 230 Robinia pseudoacacia (Black Wocust)). .....0..-.-++-+.. ses eecc cee 233 INCOEUESAGCCH AIM. (CS lan sia) tas crs, aus, sees er alewe e+ evel srels il hale <-clowenatens 237 AG CIS SUTIN a CAC SIVA IS iis, arcioacichs +=, srtvwweltl cue ech DOAK 2, % cas eicrac ncc.the/se oe etnies Site Celtis 168 ff. Leaf with only one strong vein from the base. Wish TAMOm pS DUM Wa ee 5c scene suas oreuebeie iso erp cack oie tweets Malus i198 TREES OF ILLINOIS 17 Twigs not spiny. PAGE g. Leaves single toothed (the teeth entire). h. Teeth coarse. Leaf about as broad as long............. Populus 46 Longer than broad. RESTO CT Vane OWisccuainal sionittece aie sieabeec tess oe A Nyssa 254 Teeth many. Budsslonevand sharpinc.- se aee ee Fagus 103 Buds short. Leaves widened upwards.......... Quercus 110 Leaves widest at middle......... Castanea 107 hh. Teeth fine. Leaf-stalk with small glands............. Prunus) 210 Leaf-stalk without glands. Leaves 5 times as long as broad......... Salix 59 Leaves broader. BarksanOtSGallivicac ccrtrs ave «oa tis sl orn Carpinus 93 Bark scaly. One side of leaf-base smaller...... Planera 164 Leaf base symmetrical....... Amelanchier 202 gg. Leaves doubly toothed (the teeth again toothed). One side of leaf-base smaller................ Ulmus 156 Leaf-base symmetrical. Bake ISCalWy 7 Foe sycierore os) sisiaie ny sesus. « aieiete enone See Ostrya 94 Bark not scaly, often papery.............. Betula 98 eee. Margin of leaf cut more deeply (lobed). i. Leaf with several strong veins from the base. SA ysiaillleyonee ne aes Meeuarstatecs Circ etchelarsas abcls sia tereie: an aden Morus’ 174 Sap not milky; leaves as broad as long. Leaves’ notched at -end.... 2.0... ..8208.- Liriodendron 182 Leaves maple-like. With a narrow scar around each node...... Platanus 195 Val CHOU SU Clie ay SS Cait eyetatepene-rols sieie: o sishonel> Liquidambar 191 ii. Leaf with only one strong vein from the base. Muciasinouss andsanomatiGhets see. ota. ee eo c Sassafras 188 Not mucilaginous nor aromatic. Pith star-shaped when iGUti.6 2.0.66 --555-44-- Quercus 110 Pith round; twigs often spiny............ Crataegus 205 dd. Each leaf with several blades or leaflets (compound). Prickles at base of leaf; leaflets simple............ Robinia 231 Branched spines on stem; some leaflets compound.Gleditsia 226 Without either prickles or spines. Pitherounds Im) Gr@Ss-SeCtlOM. .e ne)... +06 Gymnocladus 222 Pith star-shaped when cut across; leaflets simple. IE SOlnol nein ehlblitin Saige doc pace cia cob oe oon Carya 71 IEE. AyAhoy CORAMIDIESES aha ok mace Sata Comicon do Ob or Juglans 64 cc. Two leaves at each joint (node) of the stem. Leaves simple (of one blade). Via recimero te eat OMUIT Gian.) ates yere tend lece secs ta Sesleri casio See) tue beney Cornus 260 TESA Vi Seal OND CU ere oe healers ai Shei «Sona eave, obs tarvaite, #; esaviatancte apsoms Acer 234 Leaves compound (of several leaflets). Leaflets spaced along the stalk................... Fraxinus 268 Leaflets all from one point. Miwiese slender Duds Sma se a. F.kenc wie cicus o's, o-sters sues Acer 234 WAS SROs: MOUS ATSC teers ro cycta: is erietel ones score 101 o'e.0 (oteyecs Aesculus 248 ccc. Three large simple leaves at each node................. Catalpa 282 18 I_ttrnois NATURAL History SuRVEY BULLETIN Il. KEY TO THE TREES WHEN IN FLOWER a. Flowers showy, with both stamens and pistils. b. Petals united. Forming a smell yermiar “white. Ur. < . ssc. ce clea oe Ear Diospyros FPovminge an irreewiar- open funnel os... ok bin pai wee eae Catalpa bb. Petals not grown together. c. Flower resembling a pea-blossom. SER OIE CLT TAG. cies od ee lcicte 4 tie din oss bo wen yee Robinia SAL I AMOON TORS. . Ht. x/.:c-cc arsca wis dh e's s oisic Viv bisins os Owls Cercis cc. Flower like an apple-blossom. ELT SLTIEL APES J EPO TIN gh, 5 oo oh orel ain de ac ebeaw Wal Oa aah ITER Malus Sinai and THENOr, TIESCONtds: 5 discs ccs sz wietele ce vs Jceiw Crataegus GOGH IOWEL, , Sind cherryDIOssom 21'S. basco ve as eh ee Prunus cece. Flower neither pea-, nor apple-, nor cherry-like. d. Appearing before or with the leaves. WVHIGC, TOC IISTETS25. ts c& oe ak ceerar enw lee aude eis Amelanchier Browiiasou-red: (On tne: EWikSc oe ews soso es cheese Asimina dd. Appearing after the leaves. Small, several on a one-bracted stalk................. Tilia Moderate, clustered, ‘irregular... 2 os. 336: oes oes Aesculus Large, not clustered, regular. misornily Vevowish° ... 5 cee. ve devas cr oc eee Magnolia With differently colored center............ Liriodendron aa. Flowers small, not very showy. e. In a flower-like cluster with 4 large white bracts........... Cornus ee. Without petal-like bracts. f. Leaves evergreen, small and narrow. PUES EE PANO NN eh sh cle eo aint & ate tetera eae woe ee ae are ois ar ee Pinus Not needle-like. On fan-like branches; scale-like......................- Thuja NOL On stan-Nkhe- DIANCHEN s+. Fraxinus pp. One at a node; leaflets compound....Gymnocladus Ill KEY TO THE TREES WHEN IN FRUIT a. Fruit fleshy when ripe. b. Flesh thin, drying. Leaves evergreen, small; fruit bitter................. Juniperus Leaves falling in autumn; fruit with thin sweet flesh...... Celtis bb. Fruit a mass of pistils with fleshy calyxes; sap milky. Fruit scarcely an: inch long, edible...................%.2. Morus Fruit round, large, not edible............22-5+-2eeseeee- Maclura bbb. Fruits several from each flower, large; seeds large....... Asimina bbbb. Fruit one from each flower. c. With a stony “pit”; only one seed. ACh aniteineaeGOlOT eG) GUiDigs