Hordeum pusillum

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

Overview

Interesting Facts

Common Names

Click on the language to view common names.

Description

Genus Hordeum

Plants annual or perennial . Culms usually erect . Leaf sheath of cauline leaves split almost to base ; ligule membranous or leathery-membranous; auricles present or absent; leaf blade usually flat. Spike dense, usually without a terminal spikelet ; rachis short, brittle, rarely flexible . Spikelets usually 3 per node, in regular rows , with 1(or 2) florets ; lateral spikelets usually pedicellate , rarely sessile, often reduced and much smaller than central spikelet; central spikelet usually sessile, rarely pedicellate, perfect . Glumes narrow, subulate-setaceous, sometimes lanceolate dilated at base, inconspicuously 1-3-veined, not keeled . Lemma subrounded abaxially, leathery, rarely leathery-membranous, 5-veined, not keeled, awned or awnless. Palea almost equaling lemma, glabrous , scabrous , or ciliate along keels. Lodicules broadly lanceolate or lanceolate-ovate. Caryopsis usually adnate to lemma and palea, rarely free , oblong , concave furrowed on inner side, apex hairy . x = 7.

Between 30 and 40 species: temperate regions , also on subtropical mountains; ten species (one endemic, two introduced ) in China.

All species when young are used for forage .[1]

Physical Description

Habitat

Typically found at an altitude of 0 to 2,998 meters (0 to 9,836 feet).[2]

Biology

Reproduction

Duration: Annual

Growth

Culture: Space 3-6" apart.

Soil: Minimum pH: 5.6 • Maximum pH: 8.5

Sunlight: Sun Exposure: Full Sun .

Moisture: Drought Tolerance: High

Taxonomy

Synonyms

Critesion pusillum< /i> (Nutt.) A. LöveHordeum pusillum var. pubens A. S. Hitchc.

Notes

Name Status: Accepted Name .

Last scrutiny: 17-Oct-2001

Similar Species

Members of the genus Hordeum

ZipcodeZoo has pages for 30 species, subspecies, varieties, forms, and cultivars in this genus:

H. arizonicum (Arizona Barley) · H. brachyantherum (Meadow Barley) · H. brachyantherum brachyantherum (Meadow Barley) · H. brachyantherum californicum (Meadow Barley) · H. bulbosum (Bulbous Barley) · H. bulbosum bulbosum (Bulbous Barley) · H. depressum (Dwarf Barley) · H. intercedens (Bobtail Barley) · H. jubatum (Foxtail Barley) · H. jubatum jubatum (Foxtail Barley) · H. marinum (Mediterranean Barley) · H. marinum gussonianum (Knee Barley) · H. marinum marinum (Seaside Barley) · H. murinum (Barley Grass) · H. murinum glaucum (Bulbous Barley) · H. murinum leporinum (Bulbous Barley) · H. murinum murinum (Bulbous Barley) · H. pusillum (Little Barley) · H. secalinum (Meadow Barley) · H. spontaneum (Spontaneous Barley) · H. tetrastichum (Four-Rowed Barley) · H. vulgare (Barley) · H. vulgare distichon (Barley) · H. vulgare distichum (Two-Rowed Barley) · H. vulgare duplialbum (Barley) · H. vulgare nudideficiens (Barley) · H. vulgare nudum (Common Barley) · H. vulgare spontaneum (Spontaneous Barley) · H. vulgare subnutans (Barley) · H. vulgare vulgare (Cultivated Barley)

More Info

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Further Reading

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• A flora of northwest America: containing brief descriptions of all the known indigenous and naturalized plants growing without cultivation north of California, west of Utah, and south of British Columbia / by Thomas Howell. Vol. 1, Phanerogamae. Portland, Or.: [s.n.], 1903. url p. 777, p. 777.
• A manual of weeds, with descriptions of all the most pernicious and troublesome plants in the United States and Canada, their habits of growth and distribution, with methods of control, by Ada E. Georgia. .. with 385 illustrations by F. Schuyler Mathews. .. New York: The Macmillan Company, 1916, c1914. url p. 66.
• A survey of natural areas in Tyrrell County, North Carolina: for The North Carolina Natural Heritage Program, Coastal Natural Area Inventory Project / Raleigh: North Carolina Coastal Energy Impact Program, Office of Coastal Management, North Carolina Dept. of Natural Resources and Community Development, [1982?] url p. 7.
• A text-book of grasses with especial reference to the economic species of the United States, by A. S. Hitchcock. New York, Macmillan, 1914. url p. 245, p. 77.
• A text-book of grasses: with especial reference to the economic species of the United States / by A.S. Hitchock. New York: Macmillan, 1914. url p. 245, p. 77.
• American grasses / Washington: Gov. Print. Off., 1897-1901. url p. 314.
• An illustrated flora of the Pacific States: Washington, Oregon, and California. Stanford University, Stanford University Press, 1923-[60] url p. 245.
• An illustrated flora of the northern United States, Canada and the British possessions: from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian / by Nathaniel Lord Britton and Hon. Addison Brown. New York: Scribner, 1913. url p. 286.
• Annals of the Lyceum of Natural History of New York. New-York: 1824-1876. url p. 254.
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• Bulletin / Illinois Natural History Survey. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division, 1918-1985. url p. 425, p. 506.
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• Flora of Delaware and the Eastern Shore: an annotated list of the ferns and flowering plants of the peninsula of Delaware, Maryland and Virginia. [Wilmington]: Society of Natural History of Delaware, 1946. url p. 26.
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Notes

Contributors

• Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed January 11, 2012.

Identifiers

• Biodiversity Heritage Library NamebankID: 2661059
• Catalogue of Life Accepted Name Code: ITS-524163
• Global Biodiversity Information Facility Taxonkey: 4490920
• Globally Unique Identifier: urn:lsid:ipni.org:names:405338-1
• GRIN Nomen Number: 19322
• Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 40866
• MoBot NameID: 25516174
• Natural Heritage Network Species Identifier: PMPOA380B0
• U.S.D.A. Plant Symbol: HOPUP
• Zipcode Zoo Species Identifier: 32094

Footnotes

1. "Hordeum". in Flora of China Vol. 22 Page 6, 386, 395, 443, 444. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
2. Mean = 365.970 meters (1,200.689 feet), Standard Deviation = 435.260 based on 1,083 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]

©2004-2012 David Stang. All rights reserved.