Checklist » Poaceae » Elymus trachycaulus ssp. trachycaulus
Last updated 6/3/2009 by David Giblin.
Elymus trachycaulus (Link) Gould ex Shinners ssp. trachycaulus[FNA24, HC2]
bearded wheatgrass

Publication: Rhodora 56(662): 28. 1954.

Origin: Native

selected vouchers: WTU

Notes: FNA24: "Elymus trachycaulus subsp. trachycaulus grows throughout the habitat and range of the species, and exhibits considerably more variation than subsp. subsecundus. Two aspects of the variation that seem particularly worthy of further study are the glume venation, and the spacing of spikelets in the spikes. Plants with glumes having 5–7 well-developed, narrowly spaced veins are restricted to lower elevations and the southern portion of the subspecies range; northern plants and plants at higher elevations generally have 3–5 weakly developed and widely spaced veins. The former glumes resemble those of E. glaucus, with which E. trachycaulus subsp. trachycaulus is often sympatric; the latter, those of E. violaceus. Spikelet spacing also varies considerably. In at least some instances, plants with widely spaced spikelets appear to be associated with more shady habitats."

References: (none)

Synonyms & Misapplied Names:
Agropyron ×brevifolium Scribn.
Agropyron caninum (L.) P. Beauv. ssp. majus (Vasey) C.L. Hitchc.[HC]
Agropyron caninum (L.) P. Beauv. var. majus Scribn.[HC]
Agropyron pauciflorum (Schwein.) Hitchc. ex Silveus
Agropyron pauciflorum (Schwein.) Hitchc. ex Silveus ssp. majus (Vasey) Melderis
Agropyron pauciflorum (Schwein.) Hitchc. ex Silveus ssp. novae-angliae (Scribn.) Melderis
Agropyron pauciflorum (Schwein.) Hitchc. ex Silveus ssp. teslinense (A.E. Porsild & Senn) Melderis
Agropyron pauciflorum (Schwein.) Hitchc. ex Silveus var. novae-angliae (Scribn.) Taylor & MacBryde
Agropyron tenerum Vasey
Agropyron teslinense A.E. Porsild & Senn
Agropyron trachycaulum (Link) Malte ex H.F. Lewis var. majus (Vasey) Fernald
Agropyron trachycaulum (Link) Malte ex H.F. Lewis var. novae-angliae (Scribn.) Fernald
Elymus pauciflorus (Schwein.) Gould
Elymus trachycaulus (Link) Gould ex Shinners ssp. novae-angliae (Scribn.) Tzvelev
Elymus trachycaulus (Link) Gould ex Shinners ssp. teslinensis (A.E. Porsild & Senn) Á. Löve
Elymus trachycaulus (Link) Gould ex Shinners var. majus (Vasey) Beetle
Roegneria pauciflora (Schwein.) Hyl.