|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
|Family: Poaceae (Gramineae)||View Description||Dichotomous Key|
|Genus: Elymus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Elymus elymoides (Raf.) Swezey
Habit: Plant cespitose, often glaucous. Stem: erect to decumbent, 1--6.5(8) dm. Leaf: sheath glabrous to densely long-white-hairy; auricles 0--1 mm; ligule < 1 mm; blade (1)2--4(6) mm wide, flat, folded, or rolled. Inflorescence: 2.5--20 cm (except awns), axis breaking apart with age; internodes 3--10 mm; spikelets 2(3) per node. Spikelet: 10--20 mm; glumes 15--125 mm, awn-like, base narrow, thick, generally spreading, entire or split into 2--3 unequal divisions; florets 2--4(5); lemma 6--12 mm, awn 15--120 mm, spreading; palea 6--11 mm, veins sometimes extended as bristles; anthers +- 2 mm. Chromosomes: 2n=28.
Note: Elymus elymoides subsp. hordeoides (Suksd.) Barkworth doubtfully naturalized. If recognized taxonomically: sporadic hybrids with Elymus trachycaulus assignable to Elymus ×saundersii Vasey (Siskiyou, Modoc cos. to Monterey, Tulare cos.); widespread hybrids with Elymus glaucus assignable to Elymus ×hansenii Scribn.; hybrids with Elymus spicatus assignable to Elymus ×saxicola [×Pseudelymus saxicola (Scribn. & J.G. Sm.) Barkworth & D.R. Dewey], rarely collected.
Unabridged Note: Elymus elymoides subsp. hordeoides (Suksd.) Barkworth reported from Modoc and Siskiyou cos., but not been collected in recent years and doubtfully naturalized. If recognized taxonomically: hybrids with Elymus trachycaulus assignable to Elymus ×saundersii Vasey [Agropyron saundersii (Vasey) Hitchc.], which occurs sporadically from Siskiyou and Modoc cos. southern to Monterey and Tulare cos.; widespread hybrids with Elymus glaucus assignable to Elymus ×hansenii Scribn. [Sitanion hansenii (Scribn.) J.G. Sm.]; hybrids with Elymus spicatus assignable to Elymus ×saxicola Scribn. & J.G. Sm. [Agropyron saxicola (Scribn. & J.G. Sm.) Piper; × Pseudelymus saxicola (Scribn. & J.G. Sm.) Barkworth & D.R. Dewey], which is rarely collected and questionably persisting. Intergrades with Elymus multisetus.
eFlora Treatment Author: James P. Smith, Jr.
Jepson Online Interchange
Previous taxon: Elymus condensatus
Next taxon: Elymus elymoides var. brevifolius
Citation for this treatment: James P. Smith, Jr. 2016. Elymus elymoides, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=24104, accessed on August 25, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on August 25, 2016.