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Pakistan | Family List | Poaceae

Coix Linn., Sp. Pl. 2:972. 1753. Gen. Pl., ed. 5, 419. 1754; Hook. f., Fl. Brit. Ind. 7:99. 1896; Blatter & McCann, Bombay Grasses 3. 1935; Bor, Fl. Assam 5:453. 1940; Mimeur in Revue Bot. appl. Agric. trop. 31:197.1951; Sultan & Stewart, Grasses W. Pak. 1:148. 1958; Bor, Grasses Burma Ceyl. Ind. Pak. 263. 1960; Bor in Towns., Guest & Al-Rawi, Fl. Iraq 9:555. 1968; Bor in Rech. f., Fl. Iran. 70:551. 1970; Tzvelev, Poaceae URSS 713. 1976. Tutin in Tutin et al., Fl.Eur. 5:267. 1980.

Robust monoecious annuals or perennials with erect or floating culms and broad flat leaf-blades; ligule short, membranous. Inflorescences terminal and axillary, often numerous, each subtended by a globose or elongated ivory-like cupule (a modified leaf-sheath within which is a membranous prophyll) and comprising 2 racemes; female raceme enclosed by the cupule and consisting of 1 sessile spikelet accompanied by 2 barren pedicels; male raceme exserted from the mouth of the cupule, short, the spikelets imbricate and borne in pairs or threes, one pedicelled the other(s) sessile. Female spikelet: glumes orbicular, membranous with a cartilaginous beak, the upper keeled; lower floret represented by an orbicular membranous lemma; upper floret with membranous lemma and palea, the 2 stigmas exserted from the cupule. Male spikelet lanceolate to elliptic-oblong; lower glume flat on the back, 2-keeled, the keels winged above; upper glume boat-shaped; florets 2, with membranous lemma and palea, the lower as long as the spikelet, the upper shorter and sometimes barren. Caryopsis subglobose to ellipsoid.

A genus of ± 6 species in tropical Asia, 1 of them introduced throughout the tropics; 1 species occurs in Pakistan.

Lower Taxon

Related Synonym(s):


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