Coleataenia longifolia (Torr.) Soreng ssp. rigidula (Bosc ex Nees) Soreng
Annotated by Ben Legler, Sep 2020.

Idaho: Idaho County: Clearwater National Forest: At Jerry Johnson Hot Springs, midway between outlet of hot springs pool and shore of Warm Springs Creek. Elev. 976 m.
46.462798° N, 114.873262° W
Datum: WGS 84. Uncertainty: 12 meters. Coordinate Source: Digital Map.
Open, wet, cobbly and muddy area bisected by warm rivulets from hot springs, with Juncus acuminatus, Echinochloa crus-gali, Plantago major; area receives foot traffic from recreational visitors. Primary inflorescence branches spreading, 1-sided with secondary branches appressed; spikelets 1.7-2 mm long, maroon; lower glume 1-veined; upper lemma minutely hairy at tip, enclosing upper palea; leaf sheaths compressed; leaf blades 5-8 mm wide; plants perennial, densely cespitose, forming large tufts in wet mud; locally common and naturalized. Photographed. Phenology: Flowers and Fruits.

Ben Legler 16424, Sep 11, 2020
ID, Accession: 182604, Barcode: ID188158