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Pakistan | Family List | Poaceae | Poa

Poa palustris Linn., Syst. Veg., ed. 10,2:874. 1759. Bor, Grasses Burma Ceyl. Ind. Pak. 559.1960; Bor in Rech.f., Fl. Iran. 70:45.1970; Tzvelev, Poaceae URSS 470.1976; Edmondson in Tutin et al., Fl. Fur. 5:164.1980.

Loosely tufted short-lived perennial; culms (15-)40-80(-150)cm high, erect or spreading, sometimes geniculate at the base. Leaf-blades flat, 5-20cm long, 1-2(-4)mm wide, flaccid, gradually tapering to a stout point, scaberulous on the margins and both surfaces; ligule rounded, 1-3mm long. Panicle narrowly pyramidal 10-20(-30)cm long, spreading; branches mostly in distant clusters of 3-6, scabrid. Spikelets 2-5-flowered, ovate to oblong, 3-5mm long, yellowish-green or purplish; glumes lanceolate to narrowly ovate, the lower 2-3 mm long, 1-3-nerved, the upper broader, 2.5-3 mm long, 3-nerved; lemmas narrowly oblong in side-view, 2.5-3 mm long, obtuse, ciliate on the keel and marginal nerves, with sparse wool at the base; palea almost as long as the lemma, scabrid along the keels; anthers 1.3-1.5 long.

Type: not indicated.

Distribution: Kashmir; widely distributed in temperate regions of the northern hemisphere.

Swamp Meadow-grass is distinguished from Poa nemoralis by its longer ligules, from Poa trivialis by its smooth leaf-sheaths and blunt ligules, and from Poa pratensis by its longer ligules and the absence of rhizomes.


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