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Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Poa garhwalensis

HABIT Perennial; caespitose. Culms erect; 45–60 cm long; 3 mm diam.; 2 -noded. Culm-internodes terete; smooth. Lateral branches lacking. Leaves mostly basal. Leaf-sheaths 10–20 cm long; keeled. Ligule an eciliate membrane; 1.5–3 mm long; obtuse. Leaf-blades 4–10 cm long; 2–3 mm wide. Leaf-blade surface scabrous; rough on both sides. Leaf-blade margins scabrous. Leaf-blade apex acute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 4–10 cm long; 3–4 cm wide. Primary panicle branches spreading; 3–5 -nate. Panicle axis scabrous. Panicle branches scaberulous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels scabrous.

FERTILE SPIKELETS Spikelets comprising 3–8 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 5.1 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 0.5–0.8 mm long.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume oblong; 3–3.2 mm long; 0.85 length of upper glume; membranous; much thinner on margins; 1-keeled; 3 -veined. Lower glume primary vein scabrous. Lower glume apex acute. Upper glume oblong; 3.2–3.8 mm long; 0.8 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.

FLORETS Fertile lemma elliptic; 4–4.5 mm long; membranous; much thinner above; much thinner on margins; keeled; 5 -veined. Lemma midvein scabrous (above); ciliate; hairy below. Lemma margins ciliate; hairy below. Lemma apex acute. Palea keels scaberulous. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; membranous. Anthers 3; 2–2.5 mm long.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-tropical: India.

NOTES Poeae. Nautiyal & Gaur 2006.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.