Sclerochloa P.Beauv.

Hardgrass (en), Sclérochloé (fr)

Genus

Angiosperms > Poales > Poaceae

Characteristics

Annuals. Leaf sheaths closed for lower 1/4–1/2 of their length; leaf blades linear, flat or involute. Inflorescence a contracted or dense, 1-sided panicle, often subracemose; branches short, stout, smooth, often bearing only 1 subsessile spikelet. Spikelets linear to oblong, florets 3–8, usually lower bisexual, upper male or sterile, tardily disarticulating between florets and below pedicel, lowest rachilla internode enlarged, very stout and tough; glumes unequal, herbaceous with broad scarious margins, keeled, lower glume 3–5-veined, upper glume 5–9-veined, apex obtuse; lemmas narrowly oblong, leathery with scarious margins, keeled, prominently 5–7-veined, glabrous, apex obtuse to rounded. Caryopsis with an apical beak formed from persistent style base; hilum oval. x = 7.
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Annuals, caespitose, bisexual. Leaves: ligule an eciliate membrane; blade once-folded in bud. Inflorescences one-sided, a single raceme or paniculate (with short, stout branches), narrow, rigid. Spikelets pedicellate, laterally compressed, falling with glumes and pedicel, tardily disarticulating between florets or not, with 3–8 bisexual florets; pedicel stout, to 1 mm long; rachilla extension with incomplete florets. Glumes 2, very unequal, shorter than spikelet, obtuse to emarginate, awnless, dorsally rounded, smooth, glabrous; lower glume 1–5-nerved; upper glume 5–9-nerved. Lemmas rounded to emarginate, awnless, decidedly firmer than glumes, leathery with membranous margins, keeled, 5–7-nerved. Lodicules membranous. Caryopsis trigonous; hilum short, round; embryo small.
Life form annual
Growth form herb
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Sexuality hermaphrodite
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Hardiness (USDA) 4-10

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Cultivation

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Images

Sclerochloa unspecified picture
Sclerochloa unspecified picture

Distribution

Sclerochloa world distribution map, present in Afghanistan, Australia, Austria, Bulgaria, Switzerland, China, Colombia, Cyprus, Czech Republic, Germany, Algeria, Spain, France, Micronesia (Federated States of), Georgia, Greece, Hungary, Iran (Islamic Republic of), Iraq, Italy, Kazakhstan, Kyrgyzstan, Morocco, Pakistan, Palau, Poland, Romania, Russian Federation, Turks and Caicos Islands, Turkmenistan, Tunisia, Ukraine, United States of America, and Uzbekistan

Identifiers

LSID urn:lsid:ipni.org:names:18976-1
WFO ID wfo-4000034721
COL ID 8W3GF
BDTFX ID 87184
INPN ID 197489
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Sclerochloa

Lower taxons

Sclerochloa dura Sclerochloa woronowii Sclerochloa kengiana