|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: Hordeum||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Hordeum jubatum L. subsp. jubatum
Habit: Annual, perennial herb. Stem: 2--8 dm, bent at base or erect, densely tufted. Leaf: sheath glabrous to hairy, auricles 0; blade to 15 cm, < 5 mm wide, scabrous to short-hairy. Inflorescence: 3--15 cm, white-green to light purple. Central Spikelet: glumes (15)35--85 mm, bristle-like throughout, strongly divergent with age; lemma 4--8.5 mm, glabrous, awn 25--90 mm.Lateral Spikelet: staminate or sterile; glumes 17--80 mm, base not flat; lemma 4--6.5 mm, awn 2--15 mm, divergent.Chromosomes: 2n=28.
Ecology: Roadsides, disturbed areas, meadows, marshes; Elevation: 20--3500 m. Bioregional Distribution: CA; Distribution Outside California: to Alaska, eastern United States, Mexico, eastern Siberia. Flowering Time: May--Jul Note: Hybridizes with Elymus multisetus to yield ×Elyhordeum californicum (Bowden) Barkworth and with Elymus trachycaulus to yield ×Elyhordeum macounii (Vasey) Barkworth & D.R. Dewey. Awns can cause mechanical injury to animals. Another subsp. occurs in the northern Rocky Mountains.
Synonyms: Hordeum jubatum var. caespitosum (Scribn.) Hitchc.
eFlora Treatment Author: James P. Smith, Jr.
Jepson Online Interchange
Previous taxon: Hordeum intercedens
Next taxon: Hordeum marinum subsp. gussoneanum
Citation for this treatment: James P. Smith, Jr. 2016. Hordeum jubatum subsp. jubatum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=50967, accessed on December 05, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on December 05, 2016.