Elymus trachycaulus subsp. trachycaulus
Contents
Discussion
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 (p. 324). 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.
Lower Taxa
Author | Mary E. Barkworth +, Julian J.N. Campbell + and Bjorn Salomon + |
Authority | unknown + |
Common name | Slender wheatgrass +, Élyme à chaumes rudes + and Agropyre à chaumes rudes + |
Distribution | Conn. +, N.J. +, N.Y. +, Wash. +, Wis. +, Alta. +, B.C. +, Greenland +, Man. +, N.B. +, Nfld. And Labr. +, N.S. +, N.W.T. +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, W.Va. +, Wyo. +, N.H. +, N.Mex. +, Tex. +, N.C. +, N.Dak. +, Pa. +, Calif. +, Nev. +, Va. +, Colo. +, Alaska +, Nebr. +, S.Dak. +, Vt. +, Ill. +, Ind. +, Iowa +, Ariz. +, Idaho +, Maine +, Md. +, Mass. +, Ohio +, Utah +, Mo. +, Minn. +, Mich. +, R.I. +, Kans. +, Mont. +, Ky. + and Oreg. + |
Illustrator | Cindy Roché and Annaliese Miller + |
Reference | None + |
Source xml | https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/314eb390f968962f596ae85f506b4b3db8683b1b/coarse grained fna xml/V24/V24 453.xml + |
Synonyms | Agropyron trachycaulum var. novae-angliae +, Elymus trachycaulus subsp. teslinensis +, Elymus trachycaulus subsp. novae-angliae +, Elymus trachycaulus subsp. major +, Agropyron trachycaulum var. typicum +, Agropyron trachycaulum var. pilosiglume +, Agropyron trachycaulum var. majus +, Agropyron teslinense +, Agropyron tenerum +, Agropyron pauciflorum +, Agropyron caninum var. tenerum +, Agropyron caninum var. majus +, Agropyron caninum subsp. majus + and Agropyron caninum var. bornemannii + |
Taxon family | Poaceae + |
Taxon name | Elymus trachycaulus subsp. trachycaulus + |
Taxon parent | Elymus trachycaulus + |
Taxon rank | subspecies + |
Volume | Volume 24 + |