Elymus hanseni

• Overview
• Interesting Facts
• Common Names
• Description
• Taxonomy
• Similar Species
• More Info
• Further Reading
• Notes

Overview

Interesting Facts

Common Names

Description

Genus Elymus

Plants perennial , usually tufted , usually without, rarely with, rhizomes. Culms usually erect . Leaf sheath of cauline leaves split almost to base ; auricles present or absent; leaf blade flat or rolled. Spike erect to nodding . Spikelets 1 or 2(4) per node, sessile, rarely very shortly pedicellate , appressed to rachis, clearly laterally compressed , usually all similar, with 210 or more florets ; rachis tough. Glumes opposite or side-by-side, linear-lanceolate to lanceolate-ovate, firmly membranous to leathery, 19(11) -veined, not keeled , apex obtuse to shortly awned ; veins ± raised. Lemma lanceolate-oblong, rounded abaxially, 5-veined, ± pubescent , apex obtuse or acute to awned, rarely toothed ; veins connivent at apex; awn erect or reflexed . Palea shorter than or equaling lemma, apex retuse , subrounded, or acute. Caryopsis usually adherent to lemma and palea. x = 7.

About 170 species:temperate regions of both hemispheres, mainly in Asia; 88 species (62 endemic) in China.

The genus Roegneria should be referred to Elymus because of their many common characters, e.g. , plants usually tufted; spikelets usually all similar, 1 per node; lemma lanceolate-oblong, rounded abaxially, 5-veined, veins connivent at apex.[1]

Taxonomy

Synonyms

Elymus Hansenii • Elymus hansenii Scribn. • Elymus hansenii Scribn. (Pro Sp.) • Elymus × hansenii Scribn.

Similar Species

Members of the genus Elymus

ZipcodeZoo has pages for 85 species, subspecies, varieties, forms, and cultivars in this genus:

Elymus alaskanus alaskanus (Alaskan Wheatgrass) · Elymus alaskanus latiglumis (Alaskan Wheatgrass) · Elymus alaskanus subsp. latiglumis (Alaskan Wheatgrass) · Elymus albicans (Montana Wheatgrass) · Elymus arizonicus (Arizona Wheatgrass) · Elymus bakeri (Baker's Wheatgrass) · Elymus calderi (Yukon Wheatgrass) · Elymus californicus (California Bottlebrush Grass) · Elymus canadensis (Canada Wild Rye) · Elymus canadensis var. canadensis (Canada Wildrye) · Elymus caninus (Bearded Wheatgrass) · Elymus ciliaris (Wildrye) · Elymus dahuricus (Dahurian Wild Rye) · Elymus diversiglumis (Diverseglume Wildrye) · Elymus dorei (Dore's Wildrye) · Elymus elymoides brevifolius (Bottle-Brush Squirrel-Tail) · Elymus elymoides hordeoides (Bottlebrush Squirreltail) · Elymus elymoides subsp. brevifolius (Squirreltail) · Elymus elymoides subsp. californicus (Squirreltail) · Elymus elymoides subsp. hordeoides (Desert Squirreltail) · Elymus europaeus (Wood-Barley) · Elymus glaucus (Blue Wild Rye) · Elymus glaucus virescens (Blue Wild Rye) · Elymus glaucus subsp. jepsonii (Jepson's Blue Wildrye) · Elymus glaucus subsp. virescens (Blue Wildrye) · Elymus gmelinii (Wildrye) · Elymus hanseni (Hansen Squirreltail) · Elymus hansenii (Hansen Squirreltail) · Elymus hirsutus (Alaska Wild-Rye) · Elymus hoffmannii (Rs Wheatgrass) · Elymus hyperarcticus (Tundra Wildrye) · Elymus hystrix (Bottle-Brush Grass) · Elymus hystrix var. bigeloviana (Bottlebrush Grass) · Elymus hystrix var. hystrix (Eastern Bottle-Brush Grass) · Elymus interruptus (Texas Wildrye) · Elymus kronokensis (Arctic Wheatgrass) · Elymus kronokensis subsp. subalpinus (Northern Wheatgrass) · Elymus lanceolatus (Streambank Wheatgrass) · Elymus lanceolatus lanceolatus (Streambank Wheatgrass) · Elymus lanceolatus psammophilus (Streambank Wheatgrass) · Elymus lanceolatus subsp. psammophilus (Streambank Wheatgrass) · Elymus latiglumis (Alaskan Wheatgrass) · Elymus macrourus (Thickspike Wheatgrass) · Elymus magellanicus (Blue Lyme Grass) · Elymus maltei (Malt Wildrye) · Elymus mossii (Moss' Wildrye) · Elymus multisetus (Big Squirrel-Tail) · Elymus palmerensis (Palmer's Wildrye) · Elymus pendulina (Wildrye) · Elymus pinaloensis (Pinalo Wildrye) · Elymus pseudorepens (Creeping Wildrye) · Elymus repens (Couchgrass) · Elymus repens repens (Couch-Grass) · Elymus riparius (River Wild-Rye) · Elymus saundersii (Saunder Wildrye) · Elymus scaber (Common Wheat-Grass) · Elymus scribneri (Schribner Wheatgrass) · Elymus semicostatum (Drooping Wild Rye) · Elymus sibiricus (Siberian Wild-Rye) · Elymus sierrae (Sierra Wildrye) · Elymus stebbinsii (Parish Wheatgrass) · Elymus stebbinsii stebbinsii (Parish Wheatgrass) · Elymus submuticus (Virginia Wildrye) · Elymus subsecundus (Bearded Wheatgrass) · Elymus svensonii (Svenson's Wild-Rye) · Elymus tangutorum (Wildrye) · Elymus trachycaulus (Slender Wheatgrass) · Elymus trachycaulus subsecundus (Slender Wheatgrass) · Elymus trachycaulus trachycaulus (Slender Wheatgrass) · Elymus trachycaulus subsp. subsecundus (Slender Wheatgrass) · Elymus villosus (Hairy Wild Rye) · Elymus virginicus (Virginia Wild Rye) · Elymus virginicus var. halophilus (Terrell Grass) · Elymus virginicus var. virginicus (Virginia Wild Rye) · Elymus vulpinus (Rydberg's Wildrye) · Elymus wawawaiensis (Snake River Wheatgrass) · Elymus wiegandii (Wiegand's Wild Rye) · Elymus x dorei (Dore's Wildrye) · Elymus x hansenii (Hansen Squirreltail) · Elymus x maltei (Malt Wildrye) · Elymus x mossii (Moss' Wildrye) · Elymus x palmerensis (Palmer's Wildrye) · Elymus x pinaloensis (Pinalo Wildrye) · Elymus x pseudorepens (Quackgrass) · Elymus x saundersii (Saunders' Wheatgrass)

More Info

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Further Reading

• A flora of California, by Willis Linn Jepson. San Francisco, Calif., Cunningham, Curtis & Welch, 1909- url p. 187, p. 187.
• American grasses / Washington: Gov. Print. Off., 1897-1901. url p. 328.
• Manual of the grasses of the United States... Wash., 1935. url p. 949.
• The Great Basin naturalist. 41 1981 Provo, Utah: M.L. Bean Life Science Museum, Brigham Young University, 1939-1999. url p. 90.

Notes

Contributors

• Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed January 10, 2012.

Identifiers

• Biodiversity Heritage Library NamebankID: 3410280
• Global Biodiversity Information Facility Taxonkey: 15755328
• Globally Unique Identifier: urn:lsid:ipni.org:names:400277-1
• Zipcode Zoo Species Identifier: 1117281

Footnotes

1. "Elymus". in Flora of China Vol. 22 Page 1, 386, 387, 400. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]

©2004-2012 David Stang. All rights reserved.