Calamagrostis tweedyi (Scribn.) Scribn. ex Vasey
Annotated by Andrew Kratz, 1990.

Montana: Ravalli County: [locality and coordinates withheld; status in Montana: S3 (Rare; MTNHP)],
Slope: 30%
Exposure: North
Soil: derived from granitic rock
Site: midslope
Vegetation type: Douglas-fir - ponderosa pine forest
Asso. spp: Quaking aspen, ninebark, serviceberry, pinegrass, twinflower, kinnikinnik
Habit: Rhizomatous perennial
Height: 3 ft.
Abundance: common in immediate area
Notes: Found in partial shade under trees below the road and along upper edge of the road cut at edge of clearcut; Douglas-fir/ninebark Habitat Type US Forest Service Herbarium (MRC) Intermountain Research Station, Missoula, Montana. Phenology: Fruits.

Andrew Kratz 900821001, Aug 21, 1990
MONTU, Accession: 130224