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Sporobolus
Family: Poaceae
Sporobolus image
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Paul M. Peterson, Stephan L. Hatch, Alan S. Weakley. Flora of North America
Plants annual or perennial; usually cespitose, sometimes rhizomatous, rarely stoloniferous. Culms 10-250 cm, usually erect, rarely prostrate, glabrous. Sheaths open, usually glabrous, often ciliate at the apices; ligules of hairs; blades flat, folded, involute, sometimes terete. Inflorescences terminal, open or contracted panicles, sometimes partially included in the uppermost sheath. Spikelets rounded to laterally compressed, with 1(-3) floret(s) per spikelet; disarticulation above the glumes. Glumes 0-1-veined; calluses poorly developed, usually glabrous; lemmas membranous or chartaceous, 1(3)-veined, unawned; paleas glabrous, 2-veined, often splitting between the veins at maturity; anthers (2)3. Fruits utricles or achenes, ellipsoid, obovoid, fusiform, or quadrangular, pericarp free from the seed, becoming mucilaginous when moist in most species, remaining dry and partially adherent to the seed in S. heterolepis and S. clandestinus. Cleistogamous spikelets occasionally present in the lower leaf sheaths. x = 9. Name from the Greek sporos, seed, and bolos, a throw, referring to the free seeds, which are sometimes forcibly ejected when the mucilaginous pericarp dries.
Vascular plants of NE US and adjacent Canada
Spikelets 1-fld, articulated above the glumes; glumes lanceolate to ovate, 1-veined, from much shorter to somewhat longer than the lemma; lemma membranous or herbaceous, rounded on the back, veinless or 1(3)-veined, obtuse to acuminate, awnless; palea about as long as the lemma or longer, of similar texture, usually conspicuous and in some spp. wider than the lemma; grain in most spp. soon separating from the lemma and palea, falling free; pericarp free from the seed; annual or perennial grasses with narrow, often involute lvs, minute or no ligule, and open or contracted panicles of rather small spikelets. 100, mostly of warm reg., esp. in the New World.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
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Sporobolus actinocladus
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Sporobolus acuminatus
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Sporobolus adustus
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Sporobolus advenus
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Sporobolus aeneus
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Sporobolus africanus
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Sporobolus airoides
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Sporobolus alopecuroides
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Sporobolus alterniflorus
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Sporobolus anglicus
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Sporobolus angustus
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Sporobolus annuus
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Sporobolus apiculatus
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Sporobolus arcuatus
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Sporobolus arenicola
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Sporobolus atrovirens
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Sporobolus australasicus
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Sporobolus bahamensis
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Sporobolus bakeri
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Sporobolus benthamii
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Sporobolus berterianus
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Sporobolus berteroanus
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Sporobolus blakei
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Sporobolus bogotensis
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Sporobolus brevipilis
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Sporobolus buckleyi
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Sporobolus camporum
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Sporobolus canovirens
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Sporobolus capillaris
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Sporobolus caroli
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Sporobolus centrifugus
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Sporobolus clandestinus
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Sporobolus coahuilensis
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Sporobolus compositus
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Sporobolus congoensis
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Sporobolus contractus
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Sporobolus cordofanus
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Sporobolus coromandelianus
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Sporobolus creber
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Sporobolus crucensis
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Sporobolus cryptandrus
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Sporobolus cubensis
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Sporobolus curtissii
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Sporobolus diander
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Sporobolus diandrus
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Sporobolus distichivaginatus
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Sporobolus domingensis
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Sporobolus elongatus
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Sporobolus erectus
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Sporobolus eximius
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The National Science Foundation
Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
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