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Tragus Haller, Hist. Stirp. Helv. 2:203. 1768. Boiss., Fl. Or. 5:450. 1884; Hook.f., Fl. Brit. Ind. 7:96. 1896; Bor, Fl. Assam 5:161. 1940; Sultan & Stewart, Grasses W. Pak. 2:363. 1959; Bor, Grasses Burma Ceyl. Ind. Pak. 682. 1960; Bor in Towns., Guest & Al-Rawi, Fl. Iraq 9:468. 1968; Bor in Rech.f., Fl. Iran. 70:461. 1970; Tzvelev, Poaceae URSS 650. 1976; Tutin in Tutin et al., Fl. Eur. 5:260. 1980; nom. conserv.
Nazia Adans.
Annuals or perennials. Leaf-blades flat, pectinate-ciliate on the margins; ligule a line of hairs. Inflorescence stiff, dense, cylindrical, spike-like, the spikelets in subsessile (rarely long peduncled) deciduous clusters; each cluster composed of 2-5 spikelets, these paired or sessile upon a very short rhachis. Spikelets lanceolate to ovate, awnless, those of a cluster all alike or the upper more or less reduced; glumes dissimilar, the lower (adaxial) a minute hyaline scale or suppressed, the upper as long as the spikelet, its nerves formed into prominent ribs bearing rows of short prickles, thin between the ribs; lemma almost as long as the glume, ovate, membranous, 3-nerved; stamens 3. Caryopsis ellipsoid to oblong, slightly dorsally compressed.
A genus of 7 weedy species found throughout the tropics; 2 species occur in Pakistan.
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Spikelets separated by a distinct internode; upper
glume 2-3 mm long, its prickles often bulbous |
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Tragus berteronianus |
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Spikelets arising at almost the same level; upper
glume 2.5-4 mm long, its prickles never bulbous |
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Tragus roxburghii |
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Lower Taxa
Related Synonym(s):
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Treatments in Other Floras @ www.efloras.org
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