MONTANA This **cover" page added by the Internet Archive for formatting purposes 587* JJ Nllsrbn li)82 Jvr-K ^^ ,?.:;j, r'».xi ^^.^ i,.-i, ,--^^ - B f;^'%: STATUS REVIEW OF Botrychium minqanense U.S.D.A. FOREST SERVICE - REGION 1 LOLO NATIONAL FOREST prepared by Peter L. Achuff Montana Natural Heritage Program 1515 E. Sixth Avenue Helena, Montana 59620 January 1992 1^ STATT DOCUMENTS COLLECTION OCT C1992 MONTANA STATE LIBRARY 1515 E. 6th AVE. HELENA, MONTANA 59620 This is an abridged report For the full report please contact: The Montana Natural Heritage Program 1515 E Sixth Ave Helena, Montana 59620 406-444-3009 ' TABLE OF CONTENTS SUMMARY i I. SPECIES INFORMATION A. CLASSIFICATION . 1 B. PRESENT LEGAL OR OTHER FORMAL STATUS 1 C. DESCRIPTION 2 D. GEOGRAPHICAL DESCRIPTION 4 E. HABITAT 5 F. POPULATION DEMOGRAPHY AND BIOLOGY 7 G. POPULATION ECOLOGY 8 H. LAND OWNERSHIP 9 II. ASSESSMENT AND MANAGEMENT RECOMMENDATIONS A. THREATS TO CURRENTLY KNOWN POPULATIONS 9 B. MANAGEMENT PRACTICES AND RESPONSE 10 C. RECOMMENDATIONS FOR MAINTAINING VIABLE POPULATIONS . 10 D. RECOMMENDATIONS FOR FURTHER ASSESSMENT 11 III. LITERATURE CITED 12 IV. ELEMENT OCCURRENCE PRINT-OUTS AND MAPS 14 / The three digit numbers in parentheses in this report refer to the Montana Natural Heritage Program occurrence number for the site . SUMMARY Botrychium roinqanense is a small fern that occurs widely in northern North America extending south into Montana and other western states. Species in this genus are often hard to distinguish and the taxonomy is currently in flux. In Montana, it is currently known from seven locations. Two are in Glacier National Park in the Logan Pass area, one near Mount Aeneas in the Swan Range, two at Swan Lake, and two in the Ninemile Creek valley northwest of Missoula. Field surveys in July and August of 1991 located one additional population which is one of the two populations in the Ninemile area. Botrychium minganense has recently been added to the list of sensitive species for Region 1 of the U.S. Forest Service but has no status under the Endangered Species Act. It is classified as an SI species (critically imperiled because of rarity) by the Montana Natural Heritage Program. Botrychium minganense is reported from a wide variety of habitats ranging from low elevation meadows, riverbanks, sand dunes and woods to high elevation alpine meadows. In Montana, it occurs in low elevation, moist forests as well as alpine areas. In Ninemile Creek valley of the Lolo National Forest, it occurs in deeply-shaded creek bottoms in moist to wet Thuja plicata/ Oplopanax horridum and Thuja plicata/Clintonia unif lora habitat types. These sites are close to stream channels and are likely affected by periodic flooding. Population size of Botrychium minganense is generally small and varies from year to year. The plants reproduce both sexually by spores and vegetatively by gemmae, and contain mycorrhizal fungi. Timber harvest and grazing are potential threats to these plants. Management planning should take all Montana populations into account in order to maintain viable populations on U.S. Forest Service lands. Field surveys should be continued in areas of suitable habitat and monitoring of existing populations should be established. I. SPECIES INFORMATION A. CLASSIFICATION 1. SCIENTIFIC NAME: Botrvchium minqanense Victorin 2. COMMON NAME: Mingan Island Moonwort 3. FAMILY: Ophioglossaceae (Adder ' s-tongue Family) 4. GENUS: The genus Botrvchium contains about 50 species worldwide, perhaps 25 of which occur in North America (Cody and Britton 1989, Lellinger 1985). Botrvchium consists of three subgenera, with the subgenus Botrvchium (Moonworts) containing B. minqanense . The species of Botrvchium are often hard to distinguish since the plants vary greatly according to habitat conditions and maturity. Species have been often confused in floras and herbaria. The plants are difficult to work with both experimentally and in natural populations. Recent work by W.H. Wagner (e.g. Wagner and Lord 1956, Wagner and Wagner 1983a, b; 1990) has resulted in many new species being described. Wagner's approach differs from the more classical approach of Clausen's monograph (Clausen 1938) in that V-Jagner has emphasized the species level v/ithout recognizing subspecific levels and has developed the concept of "genus communities" (Wagner and Wagner 1983a) in which several species occur together at one locality. The ultimate usefulness of this approach, which seems to emphasize differences ratner than similarities, is a matter of active debate in the scientific community. 5. SPECIES: Botrychium minqanense occurs widely in North America although it is nowhere common. It was first described as a species in 1927 (Victorin 1927) and was generally considered a variety of B. lunaria until Wagner and Lord (1956) showed the distinctness of the two species. Botrychium lunaria is a diploid (n=45) whereas Botrychium minqanense is a tetraploid (n=90) (Love and Love 1976, Wagner and Lord 1956). B. PRESENT LEGAL OR OTHER FORMAL STATUS 1. FEDERAL STATUS: Botrychium minqanense has recently been added to the list of sensitive species for Region 1 of the U.S. Forest Service. It has no status under the Endangered Species Act. 2. STATE: Botrychium minganense has most recently been ranked by the Montana Natural Heritage Program (Achuff 1991) as an SI species ("critically imperiled in Montana because of rarity (5 or fewer occurrences)") and is considered "sensitive" within the state (Lesica and Shelly 1991) . It is also ranked SI in Idaho where it is currently known from five locations in northern Idaho (Lorain 1990, Moseley and Groves 1990) . C. DESCRIPTION 1. GENERAL NON-TECHNICAL DESCRIPTION: Botrvchium minganense is a small, herbaceous, somewhat fleshy perennial fern usually 2.5-7 inches tall although occasionally up to 12 inches tall (Fig. 1) . The plants consist a single stem, 1.5-4 inches tall, that bears two "leaves," one sterile and one fertile. The sterile portion is attached to the main stem by a short (up to 0.2 inch) stalk and is divided into numerous, wedge-shaped segments (pinnae) that do not overlap or touch. The pinnae are 0.2-0.3 inches wide, commonly cupped or spoon- shaped rather than flat and frequently have shallowly incised edges. The fertile portion is 0.5-6 inches long, paniculate, and bears rounded sporangia along the margins. 2. TECHNICAL DESCRIPTION: Stems from a short erect rhizome, producing one frond per season; fronds mostly 6-18 (30) cm long ;' sterile and fertile portions erect and equal in the hairless bud ; fertile portion 1.5-10 cm long, paniculate; sterile portion 1.5-10 cm long on a short, <5 mm long stalk, oblong, 0.5-2.5 cm wide, truncate at the base and rounded at the apex, with (2) 3-6 (7) pairs of pinnae; pinnae 4-7 mm wide, subf labellate, cupped or spatulate rather than flat, the margins entire but frequently shallowly incised, not overlapping or touching (adapted from Cody and Britton 1989, Kuijt 1982, Lellinger 1985, Taylor 1973, Wagner and Lord 1956). 3. LOCAL FIELD CHARACTERS: Botrychium minqanense can be confused with the more common B. lunaria . But in Botrychium minqanense the pinnae are 4-7 mm k wide, broadly cuneate and not overlapping or > h ms Figure 1. Habit of Botrychium minganense touching versus, in B. lunaria , the pinnae 10-12 mm wide, fan- shaped to semicircular and overlapping or nearly so. D. GEOGRAPHICAL DISTRIBUTION 1. RANGE: Botrychium minganense occurs widely in North America from Labrador to British Columbia and Alaska, and south to New York, Michigan, Wisconsin, North Dakota, Montana, Idaho, Utah, Nevada, Oregon and California (Cody and Britton 1989, Lellinger 1985). 2. CURRENT SITES: Botrychium minganense is currently known from seven locations in Montana. Two are in Glacier National Park in the Logan Pass area (element occurrences 004, 005), one near Mount Aeneas in the Swan Range (001) , two at Swan Lake (002, 003), and two in the Ninemile Creek valley northwest of Missoula (006, 007). The Swan Lake sites are on private land. The Glacier National Park sites are on land managed by the National Park Service, and the other sites are on U.S. Forest Service land. One of the sites in the Ninemile Valley (007 - Little Marion Creek) was newly located during surveys in July 1991. 3. HISTORICAL SITES: None. 4. UNVERIFIED/UNDOCUMENTED SITES: None. 5. AREAS SURVEYED BUT SPECIES NOT LOCATED: Portions of the following areas in Ninemile Valley were searched unsuccessfully for Botrychium minganense in 1991: SE5, I T16N R2 3W SOI SW^, T16N R2 3W S04 Wi. T16N R23W S05 w^. T15N R23W S06 N^. T16N R23W S09 NW^s T16N R23W SIO ^\ T16N R23W Sll T16N R23W S12 NW^ T16N R23W S13 T16N R23W S14 SE^ T16N R23W S15 T16N R23W S17 S\^\ T16N R23W S18 SE^ T16N R23W S19 NWi, T16N R23W S20 n\ T16N R23W S22 SEh T16N R23W S23 NW!? NE^ T16N R24W Sll Sh T16N R24W S12 SVJh T16N R24W S13 E'-s E. T17N R23W S19 S\^h T17N R23W S28 SE^ T17N R23W S29 T17N R23W S30 T17N R23W S31 NW^ T17N R23W S32 W-i T17N R23W S33 ^h, SEi? T17N R23W S34 S^h T17N R2 4W S14 SE^i T17N R24W S24 s^, NW?i T17N R24W S25 w^, NE^ T17N R2 4W S26 NEJj T17N R24W S36 m Element Occurrence Record Botrychium minqanense 16 I Occurrence number: 002 Global rank: G4 State rank: SI Forest Service status: Federal Status: Survey site name: CEDAR BAY ROAD EO rank: EO rank comments: County: LAKE USGS quadrangle: CRATER LAKE Township: 026N Range: 019W Section: 23 Tov;nship-range comments: SENSITIVE Precision: M Survey date: First observation: Last observation: 1976 . 1976-07-29 Elevation: 3120 Slope/aspect: Size (acres) : 0 Location : CEDAR BAY ROAD, NORTHWEST SIDE OF SWAN LAKE, Element occurrence data: UNKNOWN. General site description: UNKNOWN. Land owner/manager: PRIVATELY OWNED LAND (INDIVIDUAL OR CORPORATE) Comments : MAY BE PRIVATE OR CHAMPION OWNED. / Information source: KOTENKO, J. (2). 1976. SPECIMEN # 10356. MONTU. Element Occurrence Record Botrychium minganense 17 Occurrence number: 003 Global rank: G4 State rank: SI Forest Service status; Federal Status; SENSITIVE Survey site name: EO rank: EO rank comments: County: LAKE USGS quadrangle: CEDAR BAY ROAD CRATER LAKE Tov/nship: 026N Range: 019W Section: 14 Township-range comments: Precision: M Survey date: First observation: 1976 Last observation: 1977-07-31 Elevation: 3100 Slope/aspect: Size (acres) : 0 Location : WEST SIDE OF SWAN LAKE, ROAD TO CEDAR BAY, CA . 1.5 MILES FROM CEDAR BAY ROAD, WEST SIDE OF ROAD. Element occurrence data: "IN 1977 ONLY ONE RARE PLANT WHERE THERE WERE A SCORE THE YEAR BEFORE. " General site description: IN SMALL RAVINE WITH MOIST WOODS; SOME DISTURBANCE, MANY HERBS; WITH BOTRYCHIUM DUSENII, DRYOPTERIS SPINOSA AND D. FELIX-MAS. Land ovmer/manager : PRIVATELY OWNED LAND (INDIVIDUAL OR CORPORATE) / Comments: MAY BE ON FOREST PRODUCTS LAND. VOUCHER - MERHOFF, L.A. (7602), 1976, SPECIMEN # 80731 (MONTU) . Information source: MERHOFF, L.A. (7703). 1977. SPECIMEN # 80729. MONTU. Element Occurrence Record 18 BotrychiuTn minqanense I Occurrence number: 004 Global rank: G4 Forest Service status: SENSITIVE State rank: SI Federal Status: Survey site name: PTARMIGAN LAKE EO rank: EO rank comments: County: GLACIER USGS quadrangle: MANY GLACIER Tov/nship: 036N Range: 016W Section: 29 Precision: M Tov;nship-range comments: SW4 Survey date: Elevation: 6500 First observation: 1933 Slope/aspect: Last observation: 1933-07-31 Size (acres) : 0 Location: NEAR OUTLET OF PTARMIGAN LAKE, NE OF LOGAN PASS. Element occurrence data: RARE. General site description: ON MOSSY BANKS. Land ov/ner/manager : GLACIER NATIONAL PARK Comments : NONE. / Information source: HITCHCOCK, C.L. (2052). 1933. SPECIMEN ^ 21312. MONT. Element Occurrence Record Botrychium minganense 19 Occurrence number: 005 Global rank: G4 State rank: SI Forest Service status: Federal Status: SENSITIVE Survey site name: EO rank: EO rank comments: LOGAN PASS County: FLATHEAD GLACIER USGS quadrangle: LOGAN PASS Township: 034N Range: 016W Section: 16 Tov.'nship-range comments: SW4 Precision: M Survey date: First observation: Last observation: 1979 1979-08-11 Elevation: 6680 Slope/aspect : Size (acres) : 0 » Location: GLACIER NATIONAL PARK, LOGAN PASS, Element occurrence data: .. . UNKNOWN. General site description: ROCKY ALPINE AREA, Land owner/manager: GLACIER NATIONAL PARK Comments : NONE. Information source: PREECE, S. (1419) 1979. SPECIMEN # 67839. MONTU. I Element Occurrence Record 20 Botrychium minqanense » Occurrence number: 006 Global rank: G4 Forest Service status: SENSITIVE State rank: SI Federal Status: Survey site name: MARION CREEK EO rank: EO rank comments: County: MISSOULA uses quadrangle: STARK NORTH Tov;nship: 017N Range: 023W Section: 33 Precision: S Township-range comments: SW4SW4 Survey date: 1991-07-06 Elevation: 4000 First observation: 1990 Slope/aspect: 1-5% / SOUTHWEST Last observation: 1991-07-06 Size (acres) : 2 Location: NINEMILE CREEK, CA . 25 MILES NORTHWEST OF MISSOULA. TURN OFF MAIN NINEMILE ROAD CA . 12 MILES NORTHWEST OF NINEMILE DISTRICT OFFICE ONTO PRIVATE ROAD UP MARION CREEK; FOLLOW UP CREEK 0.25-0.75 MILE. Element occurrence data: 1991: 25 PLANTS ON 16 JULY. 1990: MORE THAN 150 PLANTS, SHEDDING SPORES ON 7 AUGUST. General site description: PLANTS IN CREEK BOTTOM IN MOIST TO WET SITES IN THUJA PLICATA/OPLOPANAX HORRIDUM AND THUJA PLICATA/CLINTONIA UNIFLORA HABITAT TYPES; PLANTS IN BOTH NEEDLE LITTER AND VEGETATED UNDERSTORIES. ASSOCIATED SPECIES: PICEA ENGELMANNII, ABIES GRANDIS, OPLOPANAX HORRIDUM, CLINTONIA UNIFLORA, b6tRYCHIUM VIRGINIANUM, TIARELLA TRIFOLIATA, FRAGARIA VESCA, DRYOPTERIS SPP. Land owner/manager: LOLO NATIONAL FOREST, NINEMILE RANGER DISTRICT Comments : 1990 SURVEY CONDUCTED BY ANDREW KRATZ . VOUCHER - KRATZ , ANDREW. (900808001), 1990, MONTU, MRC . Information source: ACHUFF, P.L. 1991. [FIELD SURVEY OF NINEMILE VALLEY, MISSOULA COUNTY, 15-19 JULY AND 10-11 AUGUST (BOTRYCHIUM MINGANENSE, SATUREJA DOUGLASII) ] . Element Occurrence Record 21 Botrvchium minganense Occurrence number: 007 Global rank: G4 Forest Service status: SENSITIVE State rank: SI Federal Status: Survey site name: LITTLE MARION CREEK EO rank: B EO rank comments: SMALL POPULATION IN RESTRICTED HABITAT WITH MINING AND LOGGING IN VICINITY. County: MISSOULA USGS quadrangle: STARK NORTH Township: 016N Range: 023W Section: 05 Precision: S Tov;nship-range comments: NE4 Survey date: 1991-07-17 Elevation: 4040 First observation: 1991 Slope/aspect: 1-5% / SOUTHWEST Last observation: 1991-07-17 Size (acres) : 1 Location : NINEMILE CREEK, CA . 25 MILES NORTHWEST OF MISSOULA. TURN OFF MAIN ROAD CA. 12 MILES NORTHWEST OF NINEMILE DISTRICT OFFICE ONTO PRIVATE ROAD UP MARION CREEK; FOLLOW TO LITTLE MARION CREEK CROSSING; POPULATION IS IMMEDIATELY DOWNSTREAM. Element occurrence data: 2 0 PLANTS IN TWO SUBPOPULATIONS , MOST PLANTS IN EARLY DEVELOPMENTAL STAGE ON JULY 17, 1991. General site description: PLANTS IN MOIST STREAMSIDE, ON LITTER OR WELL-ROTTED LOGS IN DEEP SHADE OF THUJA PLICATA FOREST, ESPECIALLY IN SEASONALLY FLOODED SMALL CHANNELS AND JUST BELOW HIGH WATER MARK. ASSOCIATED SPECIES: GYMNOCARPIUM DRYOPTERIS, TIARELLA TRIFOLIATA, OPLOPANAX HORRIDUM, TAXUS BREVIFOLIA, MONESES UNIFLORA, LISTERA CONVALLARIOIDES , BOTRYCHIUM VIRGINIANUM, ABIES GRANDIS, CLINTONIA UNIFLORA. Land owner/manager: LOLO NATIONAL FOREST, NINEMILE RANGER DISTRICT Comments : Information source: ACHUFF, P.L. 1991. [FIELD SURVEY OF NINEMILE VALLEY, MISSOULA COUNTY, JULY 15-19, AUGUST 10-11, (BOTRYCHIUM MINGANENSE, SATUREJA DOUGLASII) ] . MONTANA STATE This "cover" page added by the Internet Archive for formatting purposes