Illustrator: Cindy Roché and Annaliese Miller
Ont., Ky., Del., Ala., Ark., Conn., D.C, Fla., Ga., Iowa, Ill., Ind., Kans., La., Mass., Md., Maine, Mo., Miss., N.C., N.Dak., Nebr., N.H., N.S., N.Y., Ohio, Okla., Pa., R.I., S.Dak., Tenn., Tex., Va., Vt., Wis., W.Va.
Elymus macgregorii grows in moist, deep, alluvial or residual, calcareous or other base-rich soils in woods and thickets, mostly east of the 100th Meridian in the contiguous United States. It used to be confused with E. glabriflorus (p. 296) or E. virginicus (p. 298), but it reaches anthesis about a month earlier than sympatric populations of these species. In most of its range, E. macgregorii has purplish black auricles; light brown auricles may be locally abundant, particularly in populations at the limits of its range.
Elymus macregorii hybridizes with several species, but especially E. virginicus and E. hystrix (p. 316) (Campbell 2000). Western plants often have smaller, more condensed spikes and distinctly villous leaves, suggesting a transition to E. virginicus var. jejunus (p. 300). Transitions to E. virginicus var. jejunus can also be recognized to the north, where the dates of anthesis are delayed, but even in Maine, E. macgregorii reaches anthesis about 10 days earlier than E. virginicus (Campbell and Haines 2002). Plants with villous lemmas grow at scattered locations; they have not been reported in distinct habitats, nor in large enough populations to warrant taxonomic recognition.
|Author||Mary E. Barkworth +, Julian J.N. Campbell + and Bjorn Salomon +|
|Authority||R. Brooks & J.J.N. Campb. +|
|Common name||Early wildrye +|
|Distribution||Ont. +, Ky. +, Del. +, Ala. +, Ark. +, Conn. +, D.C +, Fla. +, Ga. +, Iowa +, Ill. +, Ind. +, Kans. +, La. +, Mass. +, Md. +, Maine +, Mo. +, Miss. +, N.C. +, N.Dak. +, Nebr. +, N.H. +, N.S. +, N.Y. +, Ohio +, Okla. +, Pa. +, R.I. +, S.Dak. +, Tenn. +, Tex. +, Va. +, Vt. +, Wis. + and W.Va. +|
|Illustrator||Cindy Roché and Annaliese Miller +|
|Source xml||https://firstname.lastname@example.org/aafc-mbb/fna-data-curation.git/src/314eb390f968962f596ae85f506b4b3db8683b1b/coarse grained fna xml/V24/V24 416.xml +|
|Taxon family||Poaceae +|
|Taxon name||Elymus macgregorii +|
|Taxon parent||Elymus +|
|Taxon rank||species +|
|Volume||Volume 24 +|