SENSITIVE 



SCIENTIFIC NAME: ASTRAGALUS CONVALLARIUS Greene 



COMMON NAME: Timber miUvetch, lesser rushy milkvetch 



FAMILY: Fabaceae (Pea Family) 



PERTINENT SYNONYMS: A^ di versi f ol ius Gray 



MONTANA STATUS: Sensitive 



GLOBAL and STATE RANKS (TNC): G5/S2 



USFWS STATUS: None 



USFS STATUS: None 



GLOBAL DISTRIBUTION: Snake River drainage, se. ID to 



sw. MT, s. to WY and UT. Peripheral. 

 MONTANA COUNTIES: Beaverhead, Broadwater, Lewis & 



Clark 

 LAND OWNERSHIP: Beaverhead N.F., private 

 PHYSIOGRAPHIC DISTRIBUTION: Upper Missouri River 



drainage, Beaverhead Mtns. 

 HABITAT: Grasslands and sagebrush areas in the 



valleys and foothills, 1180-2470 m (3,880-8,100 ft.) 

 PHENOLOGY: Flowering from May-early July, depending 



on elevation 

 COMMENTS: This species is considered to be synonymous 



with A^ diversifolius by Dorn (1984). 



SCIENTIFIC NAME: ASTRAGALUS LEPTALEUS Gray 



COMMON NAME: Park milkvetch 



FAMILY: Fabaceae (Pea Family) 



MONTANA STATUS: Sensitive 



GLOBAL and STATE RANKS (TNC): G4/S1 



USFWS STATUS: None 



USFS STATUS: Watch List 



STATUS IN OTHER STATES: Category 1 (endangered) in 



ID, rare in WY 

 GLOBAL DISTRIBUTION: Western MT south to nw WY, ec. 



ID and CO. Sparse. 

 MONTANA COUNTIES: Beaverhead, Lake(?), Madison, Park 

 LAND OWNERSHIP: BLM, Butte District; Beaverhead N.F.; 



private 

 PHYSIOGRAPHIC DISTRIBUTION: Flathead Lake region, 



Beaverhead River drainage, southwest mountain ranges 

 HABITAT: Moist or wet, often alkaline meadows in the 



valley, foothills, and montane zones, 9107-2740 m 



(5,0007-9,000 ft.) 

 PHENOLOGY: Flowering from June through August, 



depending on elevation 

 COMMENTS: This species is reported by Barneby (1964) 



for Flathead Lake. The only collections within the 



last 70 years are from Beaverhead County. Plants 



are inconspicuous. 



SCIENTIFIC NAME: ASTRAGALUS GEYERI Gray 



COMMON NAME: Geyer's milkvetch 



FAMILY: Fabaceae (Pea Family) 



MONTANA STATUS: Sensitive 



GLOBAL and STATE RANKS (TNC): G5/S1 



USFWS STATUS: None 



USFS STATUS: None 



STATUS IN OTHER STATES: Sensitive in WA 



GLOBAL DISTRIBUTION: Southeast OR to CA and NV, 



eastward, through the Snake River drainage of s. II 



to MT, WY and UT. Disjunct. 

 MONTANA COUNTIES: Dawson, Garfield 

 LAND OWNERSHIP: State; Private(7); BLM, Lewistown 



District(?) 

 PHYSIOGRAPHIC DISTRIBUTION: Great Plains 

 HABITAT: Sandy hills, plains, and dunes, ca. 610 m 



(2,000 ft.) 

 PHENOLOGY: Flowering and fruiting in June 



SCIENTIFIC NAME: ASTRAGALUS GRAYI Parry 



COMMON NAME: Gray's milkvetch 



FAMILY: Fabaceae (Pea Family) 



MONTANA STATUS: Sensitive 



GLOBAL and STATE RANKS (TNC): G3G4/S1 



USFWS STATUS: None 



USFS STATUS: None 



GLOBAL DISTRIBUTION: South-central MT and w. WY. 



Regional endemic. 

 MONTANA COUNTIES: Big Horn, Carbon 

 LAND OWNERSHIP: BLM, Miles City District; private 

 PHYSIOGRAPHIC DISTRIBUTION: Pryor Mtn.- Big Horn 



Canyon area 

 HABITAT: Open soil and disturbed areas in sagebrush 



grasslands in the valley zone, 1130-1280 m 



(3,700-4,200 ft.) 

 PHENOLOGY: Flowering in June 

 COMMENTS: Two Of the four Montana collections are 



from roadside habitats. 



SCIENTIFIC NAME: ASTRAGALUS NOLYBOENUS Barneby 



COMMON NAME: Leadville milkvetch 



FAMILY: Fabaceae (Pea Family) 



MONTANA STATUS: Sensitive 



GLOBAL and STATE RANKS (TNC): G3/S1 



USFWS STATUS: None 



USFS STATUS: Sensitive List 



GLOBAL DISTRIBUTION: Central CO, nw. MT . Disjunct. 



MONTANA COUNTIES: Teton 



LAND OWNERSHIP: Lewis & Clark N.F. 



PHYSIOGRAPHIC DISTRIBUTION: Front Range Mtns. 



HABITAT: Turfy areas and talus slopes, on calcareous 



substrates at or above timberline, 2215-2475 m 



(7,260-8,120 ft.) 

 PHENOLOGY: Flowering and fruiting in July-August 

 COMMENTS: The sites in Montana are widely disjunct 



from those in Colorado. This species is closely 



related to A^ shultziorum . which is found in high 



elevation limestone areas in western Wyoming; 



systematic studies of these two species are in 



progress. 



SCIENTIFIC NAME: ASTRAGALUS OREGANUS Nutt. 



COMMON NAME: Wind River milkvetch 



FAMILY: Fabaceae (Pea Family) 



MONTANA STATUS: Sensitive 



GLOBAL and STATE RANKS (TNC): G3G4/S1 



USFWS STATUS: None 



USFS STATUS: None 



GLOBAL DISTRIBUTION: Western WY and sc. MT. Region 



endemic. 

 MONTANA COUNTIES: Carbon 

 LAND OWNERSHIP: BLM, Miles City District; Big Horn 



Canyon N.R.A.(?); private(7) 

 PHYSIOGRAPHIC DISTRIBUTION: Pryor Mtns.- Big Horn 



Canyon area 

 HABITAT: Open, sandy or clayey soil in desert 



shrublands and sagebrush grassland in the valley 



zone, ca. 1500 m (5,000 ft.) 

 PHENOLOGY: Flowering in June, fruiting in July 

 COMMENTS: Wind River milkvetch is currently known 



from only two sites in Montana. Both sites are 



probably subject to livestock grazing. 



