Elymus trachycaulus (Link) Gould ex Shinners ssp. trachycaulus . Slender Wheatgrass. Phen: Jul-Aug. Hab: Glades and barrens, over serpentine, etc. Dist: Greenland, NL (Labrador), Keewatin, NU, YT, and AK, south to w. NC, nw. SC (Bradley et al. [in prep.]), OH, IN, IL, MO, TX, Mexico and CA.

Origin/Endemic status: Native

Synonymy: = FNA24, K1, K3, K4, NE, NY, Va; = Agropyron trachycaulum (Link) Malte ex H.F.Lewis – HC, Tx; = Elymus trachycaulus (Link) Gould ex Shinners – Il; < Agropyron trachycaulum (Link) Malte ex H.F.Lewis – RAB, W, WV; > Agropyron trachycaulum (Link) Malte ex H.F.Lewis var. ciliatum (Scribn. & J.G.Sm.) Gleason – G; > Agropyron trachycaulum (Link) Malte ex H.F.Lewis var. majus (Vasey) Fernald – F; > Agropyron trachycaulum (Link) Malte ex H.F.Lewis var. novae-angliae (Scribn.) Fernald – F; > Agropyron trachycaulum (Link) Malte ex H.F.Lewis var. trachycaulum – F; < Elymus trachycaulus (Link) Gould ex Shinners – C, Mex, Mi, Mo1, Pa

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Wetland Indicator Status:

• Eastern Mountains and Piedmont: FACU (taxonomic split from wetland indicator species)
• Great Plains: FACU (taxonomic split from wetland indicator species)
• Midwest: FACU (taxonomic split from wetland indicator species)
• Northcentral & Northeast: FACU (taxonomic split from wetland indicator species)

Heliophily: 8