POLYGONUM DOUGLASII SSP AUSTINAE * 004 

 AUSTIN'S KNOTWEED 



Global rank: 

 State rank: 



G5T4 

 82 



Forest Service status; 

 Federal Status: 



SENSITIVE 



Survey site name: HUNTERS GULCH 



EO rank: B 

 EO rank comments: 



County: LEWIS AND CLARK 



USGS quadrangle: NELSON 



Township: Range: Section: TRS comments: 

 012N 002W 02 NE4SE4, SE4NE4 



Survey date: 1992-07-29 



First observation: 1992-07-29 



Last observation: 1992-07-29 



Elevation: 4320 



Slope/aspect: 5-20% / SOUTHEAST 



Size (acres) : 



Location: 



BIG BELT MOUNTAINS, HUNTERS GULCH; CA. 0.5 MILE ABOVE 

 TRAILHEAD ON WEST SIDE OF VALLEY, OFF FS TRAIL #255. 



Element occurrence data: 



OVER 40 PLANTS, IN FRUIT. (INCOMPLETELY SURVEYED.) 



General site description: 



UPPER SLOPES OF SHALE BARRENS WITHIN AGROPYRON SPICATUM 

 HABITAT TYPE, SURROUNDED BY PINUS PONDEROSA HT WITH HIGH 

 PINE MORTALITY CAUSED BY FIRE. ASSOCIATED SPECIES: POLYGONUM 

 DOUGLASII VAR. DOUGLASII ELSEWHERE ON SLOPE, CHRYSOPSIS 

 VILLOSA, LESQUERELLA KLAUSII, PHACELIA HISPIDA, BROMUS 

 TECTORUM, CRYPTANTHA CELESIOIDES. OCCASIONAL IN A SEGMENT OF 

 MOST-EXPOSED OUTCROP HABITAT. 



Land owner/manager: 



HELENA NATIONAL FOREST, 



HELENA RANGER DISTRICT 



Comments: 



SAME SHALE SLOPES BUT GENERALLY NOT IN THE SAME MICROHABITAT 

 AS POLYGONUM DOUGLASII VAR. DOUGLASII AND LESQUERELLA 

 KLAUSII. POSSIBLE HYBRID FORM NOTED AND COLLECTED (HEIDEL 

 #889) WITH HIGHLY-BRANCHED PATTERN AND INTERMEDIATE LEAVES. 



Information source: 



HEIDEL, B. 1992. [MTNHP FIELD SURVEY TO HUNTERS GULCH OF 28 

 JULY . ] 



Specimens: 



HEIDEL, B. (891). 1992. MONT. 



Element Occurrence Record 



Plant Species of Special Concern 



Big Belt and Elkhorn Mountains 



