familyPoaceae
subfamilyPoaceae subfam. Pooideae
genusElymus
speciesElymus alaskanus
subspeciesElymus alaskanus subsp. alaskanus
Elymus alaskanus subsp. alaskanus
Common names: Alaskan wheatgrass
Endemic
Synonyms: Agropyron boreale subsp. alaskanum
Treatment appears in FNA Volume 24. Treatment on page 326.
Plants cespitose or shortly rhizomatous. Culms 25-90 cm, sometimes decumbent; nodes often exposed, glabrous or pubescent. Ligules 0.2-0.6 mm; blades 3-7 mm wide. Spikes 3.5-14 cm; internodes scabrous on the edges. Glumes glabrous, scabrous or sparsely hairy, hairs to about 0.2 mm; lemmas glabrous or hairy, sometimes more densely hairy distally, hairs about 0.2 mm, apices unawned or awned, awns to 7 mm, straight.
Discussion
Elymus alaskanus subsp. alaskanus grows on river banks and hillsides, primarily north of 50° N latitude.
Selected References
None.
Lower Taxa
None.