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Pakistan | Family List | Poaceae

Chloris Sw., Prod. Veg. Ind. Occ. 25. 1788. Boiss., Fl. Or. 5:554. 1884; Hook.f., Fl. Brit. Ind. 7:289. 1896; Bor, Fl. Assam 5:121. 1940; Sultan & Stewart, Grasses W. Pak. 2:268. 1959; Bor, Grasses Burma Ceyl. Ind. Pak. 464. 1960; Clayton in Kew Bull. 21:105. 1967; Bor in Towns., Guest & Al-Rawi, Fl. Iraq 9:450. 1968; Bor in Rech. f., Fl. Iran.70: 445. 1970; Lazarides in Aust. J. Bot. Suppl. 5:24. 1972; Tzvelev, Poaceae URSS 638. 1976.

Tufted, rhizomatous or stoloniferous perennials or annuals. Leaf-blades linear, flat or folded, acute to acuminate or obtuse; ligule membranous, short, ciliolate; sheaths rounded or keeled and flabellate. Inflorescence of few to many slender, typically digitate spikes. Spikelets 24(-6)-flowered, shortly pedicelled or subsessile, alternate in 2 rows on a tough rhachis; glumes unequal, membranous, usually lanceolate in side-view, 1-nerved, acute, acuminate or with an awn-point, usually persistent; lowest floret bisexual; lemma cartilaginous or coriaceous, mostly laterally compressed and keeled, usually ciliate on the margins and keel, entire or 2-lobed at the apex, with a subapical awn; callus rounded or pungent, ciliate; 2nd-6th florets sterile, sometimes male, rarely bisexual, embraced by or projecting from the side of the lowest floret; lemmas more or less reduced or vestigial, awned or awnless; paleas usually absent. Caryopsis ellipsoid to linear, usually trigonous, occasionally dorsally compressed.

A genus of about 40 species in tropical and warm temperate regions of both hemispheres; represented in Pakistan by 5 species.

1 Spikes long, flexuous and drooping, up to 25 cm long; spikelets narrowly lanceolate, up to 6.5 mm long, dorsally compressed   Chloris dolichostachya
+ Spikes shorter, straight and more or less ascending, not exceeding 13 cm in length; spikelets more or less ovate, rarely exceeding 3.5 mm in length, laterally compressed   (2)
2 (1) Lowest lemma with a crown of spreading hairs up to 3 mm long, margins shortly ciliate   Chloris virgata
+ Lowest lemma without a crown of spreading hairs at the apex, but long ciliate on the margins   (3)
3 (2) Second lemma oblong or lanceolate, ciliate on the margins (sometimes obscurely so), the floret often perfect   (4)
+ Second lemma a small clavate glabrous awned scale; third lemma (and fourth when present) similar but smaller   Chloris barbata
4 (3) Second lemma oblong, awned; third to fifth lemmas clavate and awned or fifth lemma reduced to an awn   Chloris quinquesetica
+ Second lemma lanceolate, awned; third lemma oblong, awnless; fourth lemma, if present, a minute awnless clavate scale   Chloris gayana

Lower Taxa

Related Synonym(s):


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