Poa cusickii Vasey ssp. cusickii
Annotated by Gordon S. Whitehead, 11 Jul 1977. Sources: FPNW.

Idaho: Fremont County: Site 26. Targhee National Forest. Summit and summit ridge of Mt. Two Top; Elevation 2650m. Elev. 2650 m.
44.6217846° N, 111.2582015° W; T15N R44E S16 SE 1/4
Datum: WGS 84. Uncertainty: 500 meters. Coordinate Source: BioGeomancer.
Bare rocky summit of Mt. Two Top. Associated with Phacelia sericea, Sdeum lanceolatum, Eriogonum umbellatum, and P. fendleriana. My specimens differ from the description given (in the key) by Hitchcock and Cronquist in not having compressed spikelets. The flowers are clearly pistillate, and it is this character which separates my material from the P. sandbergii complex. The material I collected differs only slightly from my specimens of P. fendleriana, P. cusickii is only scabrid while P. fendleriana is somewhat pilose on the keel and marginal nerves of the lemmas. The plants that I collected of both species were sympatric, and I had thought at the time that they were part of the same population. So, although the plants separate appropriately by the key and by their respective descriptions, there is some suggestion that they are actually variants within a single population. Voucher: Whitehead, G.S. 1983. M.S., Idaho State U. Flora of the Island Park Geothermal Study Area. Duplicates to: IDS, RM. Phenology: Fertile.

Gordon S. Whitehead 613, 7/11/1977
IDS, Accession: 2012.012, Barcode: IDS0021514