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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 dozyi

HABIT Perennial; cushion forming. Basal innovations intravaginal. Culms erect; 38 cm long. Lateral branches lacking. Leaves mostly basal. Ligule an eciliate membrane; 0.75–2.5 mm long; 0.75–1.5 mm long on basal shoots; truncate (basal), or acute (cauline). Leaf-blades erect; involute; 1–3.5 cm long; 0.7–1 mm wide; stiff. Leaf-blade surface smooth. Leaf-blade apex acute.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; linear; 1.5–2.5 cm long; 0.2–0.4 cm wide. Primary panicle branches appressed; 1–2 -nate; 0.9–1.2 cm long; bearing 2(–3) fertile spikelets on each lower branch. Panicle branches smooth; pubescent.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 3–5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 0.75–1 mm long; smooth. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 1.8–3 mm long; 0.9 length of upper glume; membranous; 1-keeled; 1–3 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent, or obscure. Lower glume surface smooth. Lower glume apex acute. Upper glume ovate; 2–3.2 mm long; 0.9 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins obscure. Upper glume surface smooth. Upper glume apex acute.

FLORETS Fertile lemma ovate; elliptic in profile; 2.25–3.6 mm long; membranous; keeled; 3(–5) -veined. Lemma midvein scaberulous. Lemma lateral veins obscure. Lemma surface smooth, or scabrous; rough on veins. Lemma apex acute. Palea keels scaberulous; adorned above. Rhachilla extension 1.25–2 mm long.

FLOWER Lodicules 2; membranous. Anthers 3; 0.8–1 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-tropical: Papuasia.

NOTES Poeae. Veldkamp 1995.

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