SCIENTIFIC NAME: ASTRAGALUS PLATYTROPIS Gray 



COMMON NAME: Broad-keeled milkvetch 



FAMILY: Fabaceae (Pea Family) 



MONTANA STATUS: Sensitive 



GLOBAL and STATE RANKS (TNC): G5/S1 



USFWS STATUS: None 



USPS STATUS: None 



STATUS IN OTHER STATES: Review list in ID 



GLOBAL DISTRIBUTION: Southwestern MT and c. ID, s. 



through NV to the Sierras of CA. Peripheral. 

 MONTANA COUNTIES: Beaverhead, Madison 

 LAND OWNERSHIP: BLM, Butte District 

 PHYSIOGRAPHIC DISTRIBUTION: East flanks of Pioneer 



Range, north flanks of Tobacco Root Range 

 HABITAT: Moderate elevations on open bench I and in 



sagebrush areas, usually on calcareous substrates; 



1585-1950 m (5,200-6,400 ft.) 

 PHENOLOGY: Flowering April-May, fruiting June 

 COMMENTS: The stations in Montana and Idaho are 



widely separated from the main range of the species, 



and are at much lower elevations. Populations are 



small with widely dispersed individuals. 



SCIENTIFIC NAME: ATHYSANUS PUSILLUS (Hook.) Greene 



COMMON NAME: Sandweed 



FAMILY: Brassicaceae (Mustard Family) 



MONTANA STATUS: Sensitive 



GLOBAL and STATE RANKS (TNC): G4/S1 



USFWS STATUS: None 



USFS STATUS: Sensitive 



STATUS IN OTHER STATES: Rare in B.C. 



GLOBAL DISTRIBUTION: Southern B.C. to CA, east to MT, 



ID, and UT. Peripheral. 

 MONTANA COUNTIES: Ravalli 

 LAND OWNERSHIP: Bitterroot N.F. 

 PHYSIOGRAPHIC DISTRIBUTION: Bitterroot Mtns. 

 HABITAT: Vernally moist, shallow soil on open, rock 



outcrops and along small drainages in the foothill 



and montane zones, 1200-1525 m (4,000-5,000 ft.) 

 PHENOLOGY: Flowering in April and May 

 COMMENTS: This small, early-blooming plant is easily 



overlooked and may be more common than records 



indicate. 



SCIENTIFIC NAME: ASTRAGALUS RACEMOSUS Pursh 



COMMON NAME: Alkali milkvetch, raceme mi Ikvetch 



FAMILY: Fabaceae (Pea Family) 



MONTANA STATUS: Sensitive 



GLOBAL and STATE RANKS (TNC): G5/S1 



USFWS STATUS: None 



USFS STATUS: None 



GLOBAL DISTRIBUTION: Sask. and MN south to TX and NM. 



Peripheral . 

 MONTANA COUNTIES: Carter, Fallon 

 LAND OWNERSHIP: Private 



PHYSIOGRAPHIC DISTRIBUTION: Northern Great Plains 

 HABITAT: Usually in heavy soil in grasslands on the 



plains, ca. 910 m (3,000 ft.) 

 PHENOLOGY: Flowering in late June and early July 

 COMMENTS: The distribution of this plant in Montana 



is poorly known. Our plants are var. longisetus 



Jones. 



SCIENTIFIC NAME: ATRIPLEX TRUNCATA (Torrey) Gray 



COMMON NAME: Wedgescale 



FAMILY: Chenopodiaceae (Goosefoot Family) 



MONTANA STATUS: Sensitive 



GLOBAL and STATE RANKS (TNC): G5/SH 



USFWS STATUS: None 



USFS STATUS: None 



STATUS IN OTHER STATES: Rare in Alta., rare in Sask. 



GLOBAL DISTRIBUTION: B.C. and Sask., south to CA and 



NM. Sparse. 

 MONTANA COUNTIES: Beaverhead, Lake, Lewis & Clark 

 LAND OWNERSHIP: Private(?) 

 PHYSIOGRAPHIC DISTRIBUTION: Centennial Valley, 



Flathead Valley, Helena Valley 

 HABITAT: Alkaline areas, ca. 915 m (3,000 ft.) 

 PHENOLOGY: Flowering and fruiting August -September 

 COMMENTS: In Montana, this species is known only from 



three historical collections (1899, 1908, 1952). 



SCIENTIFIC NAME: ASTRAGALUS SCAPHOIDES (Jones) Rydb. 



COMMON NAME: Bitterroot milkvetch 



FAMILY: Fabaceae (Pea Family) 



MONTANA STATUS: Sensitive 



GLOBAL and STATE RANKS (TNC): G3/S1 



USFWS STATUS: C2 



USFS STATUS: None 



GLOBAL DISTRIBUTION: Lemhi Co., ID and Beaverhead 



Co., MT. Regional endemic. 

 MONTANA COUNTIES: Beaverhead 



LAND OWNERSHIP: BLM, Butte District; State; private 

 PHYSIOGRAPHIC DISTRIBUTION: Beaverhead River draiange 

 HABITAT: Silty, often stony soil in sagebrush 



grassland in the valley and foothill zones, 



1740-1920 m (5,700-6,300 ft.) 

 PHENOLOGY: Flowering in late May and early June, 



mature fruit in July 

 COMMENTS: All of the known populations in Montana are 



subject to livestock grazing. This species could be 



confused with the more widespread A^ atropubescens . 



SCIENTIFIC NAME: BACOPA ROTUNDIFOLIA (Michx.) Wettst. 



COMMON NAME: Roundleaf water-hyssop 



FAMILY: Scrophulariaceae (Figwort Family) 



MONTANA STATUS: Sensitive 



GLOBAL and STATE RANKS (TNC): G5/S1 



USFWS STATUS: None 



USFS STATUS: None 



STATUS IN OTHER STATES: Category 1 (endangered) in ID 



GLOBAL DISTRIBUTION: IN to MT, south to MS, LA and 



TX; sporadically recurring in ID and CA. Sparse. 

 MONTANA COUNTIES: Cascade, Petroleum, Phillips 

 LAND OWNERSHIP: BLM, Lewistown District; private 

 PHYSIOGRAPHIC DISTRIBUTION: Northern Great Plains 

 HABITAT: Muddy shores and shallow ponds; 750 m (2,460 



ft.) 

 PHENOLOGY: Flowering and fruiting June-August 

 COMMENTS: This species may be more common than 



records indicate. The Cascade Co. collection is 100 



years old. 



