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Jarava
Family: Poaceae
Jarava image
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Mirta O. Arriaga. Flora of North America
Plants perennial; cespitose, sometimes rhizomatous, rhizomes forming knotted bases. Culms 15-200 cm, not branching at the upper nodes; basal branching intravaginal or extravaginal; prophylls not evident, shorter than the leaf sheaths. Leaves mostly basal, not overwintering; sheaths open to the base; cleistogenes not present; collars with tufts of hair on either side; auricles absent; ligules membranous, truncate or shortest in the center and rounded, edges usually ciliate, hairs at the outer edges often longer than the central membranous portion, ligules of the lower leaves glabrous or hairy, sometimes densely hairy, those of the upper leaves glabrous or sparsely hairy; blades usually convolute, apices narrowly pointed, flag leaves longer than 10 mm. Inflorescences panicles, often partially included in the upper leaf sheath; branches straight. Spikelets 5.5-24 mm, with 1 floret; rachillas not prolonged beyond the floret; disarticulation above the glumes, beneath the floret. Glumes unequal, usually longer than the floret, sometimes shorter, hyaline, 0-5-veined; florets narrowly lanceoloid, terete; calluses 0.2-1.6(3) mm, acute, less than or equaling the floret diameter, antrorsely strigose distally, hairs white; lemmas thickly membranous, basal 2/3 scabrous or shortly pubescent, distal 1/3 often bearing a pappus of ascending to strongly divergent 3-8 mm hairs, sometimes glabrous or with appressed hairs shorter than 1 mm, margins not or only slightly overlapping at maturity, apices not fused into a crown, lobes to 0.2 mm, with a single, terminal awn, awn-lemma junction conspicuous; awns 9-45(80) mm, persistent or deciduous, scabrous, weakly once- or twice-geniculate, first segment scabrous or pilose, terminal segment glabrous or pilose, smooth or scabrous; paleas 1/3-1/2 as long as the lemmas, flat between the veins, membranous to hyaline, glabrous or sparsely pubescent, 2-veined, veins poorly developed, apices rounded to irregular; lodicules 2-3, the third, if present, reduced; anthers 3. Caryopses fusiform, not ribbed; hila linear. x = unknown.
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Jarava academica
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Jarava annua
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Jarava arenicola
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Jarava breviseta
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not available
Jarava castellanosii
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Jarava caudata
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Jarava chrysophylla
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not available
Jarava durifolia
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Jarava hypsophila
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Jarava hystricina
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Jarava ichu
Image of Jarava ichu
Jarava illimanica
Image of Jarava illimanica
Jarava juncoides
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not available
Jarava leptostachya
Image of Jarava leptostachya
Jarava macbridei
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Jarava mattheii
Image of Jarava mattheii
Jarava media
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Jarava megapotamica
Image of Jarava megapotamica
Jarava milleana
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Jarava neaei
Image of Jarava neaei
Jarava pachypus
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Jarava plumosa
Image of Jarava plumosa
Jarava plumosula
Image of Jarava plumosula
Jarava polyclada
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Jarava pseudoichu
Image of Jarava pseudoichu
Jarava psylantha
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Jarava pungens
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Jarava pungionata
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Jarava scabrifolia
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Jarava scirpea
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Jarava speciosa
Image of Jarava speciosa
Jarava subaristata
Image of Jarava subaristata
Jarava subnitida
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not available
Jarava subplumosa
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not available
Jarava tortuosa
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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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