THREATENED 



SCIENTIFIC NAME: ALLIUM COLUNBIANUM (Ownbey & 

 Mingrone) Peterson, Annable & Rieseberg 



COMMON NAME: Columbia onion 



FAMILY: Liliaceae (Lily Family) 



PERTINENT SYNONYMS: A^ douqlasii Hook. var. 

 columbianum Ownbey & Mingrone 



MONTANA STATUS: Threatened 



GLOBAL and STATE RANKS (TNC): G3/S1 



USFWS STATUS: None 



USFS STATUS: None 



GLOBAL DISTRIBUTION: Northeastern WA, nw. ID, and w. 

 MT. Disjunct. 



MONTANA COUNTIES: Sanders 



LAND OWNERSHIP: State, private 



PHYSIOGRAPHIC DISTRIBUTION: Camas Prairie Basin in 

 the lower Flathead River drainage 



HABITAT: Vernally wet, heavy soils in low areas and 

 around vernal ponds in the valley zone, 850-900 m 

 (2,800-3,000 ft.) 



PHENOLOGY: Flowering in June 



COMMENTS: This species is currently known in Montana 

 from only a few, small, scattered colonies. It was 

 probably more common before agricultural development 

 of the Camas Prairie Basin. Recently raised to 

 specific status by Peterson et al. (1988). 



SCIENTIFIC NAME: ALLIUM FIBRILLUM Jones 



COMMON NAME: Fringed onion 



FAMILY: Liliaceae (Lily Family) 



MONTANA STATUS: Threatened 



GLOBAL and STATE RANKS (TNC): G4/S1 



USFWS STATUS: None 



USFS STATUS: Sensitive 



GLOBAL DISTRIBUTION: Eastern OR and se. WA, adjacent 



ID, and nw. MT. Regional endemic. 

 MONTANA COUNTIES: Flathead, Lincoln, Missoula 

 LAND OWNERSHIP: Kootenai N.F., Flathead N.F., Glacier 



National Park 

 PHYSIOGRAPHIC DISTRIBUTION: Cabinet Mtns., Lewis 



Range, Mission Range 

 HABITAT: Moist shallow soil in the montane zone ca. 



1615 m (5,300 ft.) 

 PHENOLOGY: Flowering in June 

 COMMENTS: The Lincoln Co. population occurs on the 



site of an active mine. 



SCIENTIFIC NAME: ALLOTROPA VIRGATA T. & G. 



COMMON NAME: Candystick 



FAMILY: Ericaceae (Heath Family) 



MONTANA STATUS: Threatened 



GLOBAL and STATE RANKS (TNC): G4/S1 



USFWS STATUS: None 



USFS STATUS: None 



STATUS IN OTHER STATES: Priority 2 (threatened) in ID 



GLOBAL DISTRIBUTION: S. Sierra Nevada and the coastal 



ranges of CA, n. to B.C. from the e. slope of the 



Cascade Range to near the coast; disjunct in ID and 



sw. MT. Disjunct. 

 MONTANA COUNTIES: Granite, Ravalli 

 LAND OWNERSHIP: Deerlodge N.F., Bitterroot N.F., Lolo 



N.F. 

 PHYSIOGRAPHIC DISTRIBUTION: Anaconda-Pintlar Range, 



Bitterroot Range, Sapphire Mtns. 

 HABITAT: Coniferous woods at mid- to fairly high 



elevations, in deep humus, 1950-2285 m (6,400-7,500 



ft.) 

 PHENOLOGY: Flowering in July and August 

 COMMENTS: Field observations indicate that most 



population are very small, often consisting of only 



one or a few individuals. This plant is an obligate 



mycotroph. 



SCIENTIFIC NAME: ARABIS FECUNDA Rollins 



COMMON NAME: Sapphire rockcress 



FAMILY: Brassicaceae (Mustard Family) 



MONTANA STATUS: Threatened 



GLOBAL and STATE RANKS (INC): G2/S2 



USFWS STATUS: C2 



USFS STATUS: Watch List 



GLOBAL DISTRIBUTION: Southwestern MT. Regional 



endemic. 

 MONTANA COUNTIES: Beaverhead, Ravalli, Silver Bow 

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



State; private 

 PHYSIOGRAPHIC DISTRIBUTION: Pioneer Range, Sapphire 



Range 

 HABITAT: Open, rocky, often eroding slopes developed 



from calcareous parent material in the foothills and 



montane zones, 1370-2150 m (4,500-7,000 ft.) 

 PHENOLOGY: Flowering from late April through early 



June 

 COMMENTS: This Montana endemic is threatened by 



exotic weed encroachment, livestock grazing, and 



mining activity. 



SCIENTIFIC NAME: ARCTOSTAPHYLOS PATULA Greene 



COMMON NAME: Green- leaf manzanita 



FAMILY: Ericaceae (Heath Family) 



PERTINENT SYNONYMS: None 



MONTANA STATUS: Threatened 



GLOBAL and STATE RANKS (TNC): G5/S1 



USFWS STATUS: None 



USFS STATUS: None 



STATUS IN OTHER STATES: None 



GLOBAL DISTRIBUTION: South-central WA to CA, east to 



AZ, NV and nw. MT. Disjunct. 



MONTANA COUNTIES: Lake 



LAND OWNERSHIP: Private 



PHYSIOGRAPHIC DISTRIBUTION: Salish Mtns. 



HABITAT: Rocky soil of open forest in the montane 

 zone, 1280 m (4,200 ft.) 



PHENOLOGY: Flowering in late May and early June, 

 mature fruit in August 



COMMENTS: There is only one population of green-leaf 

 manzanita known in Montana, on land managed for 

 timber production but voluntarily protected by the 

 owners. This species hybridizes with the more 

 common A^ uva-ursi . Our plants are ssp. platvphvUa 

 (Gray) Wells 



SCIENTIFIC NAME: ASTRAGALUS CHAMAELEUCE Gray 



COMMON NAME: Cicada mitkvetch, ground milkvetch 



FAMILY: Fabaceae (Pea Family) 



MONTANA STATUS: Threatened 



GLOBAL and STATE RANKS (TNC): G5/S1 



USFWS STATUS: None 



USFS STATUS: None 



STATUS IN OTHER STATES: None 



GLOBAL DISTRIBUTION: South-central MT south to e. UT 



and nw. CO. Peripheral. 

 MONTANA COUNTIES: Carbon 

 LAND OWNERSHIP: BLM, Miles City District 

 PHYSIOGRAPHIC DISTRIBUTION: Pryor Mtn.- Big Horn 



Canyon area 

 HABITAT: Open, sandy soil in desert shrublands in the 



valley zone, 1340 m (4,400 ft.) 

 PHENOLOGY: Mature fruit in mid-June 

 COMMENTS: The single known Montana population may be 



threatened by livestock grazing. 



