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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 igoshinae

HABIT Perennial; caespitose; clumped densely. Culms 20–40 cm long; with 0.2 of their length below uppermost node. Culm-internodes smooth. Leaves mostly basal. Leaf-sheaths smooth. Ligule an eciliate membrane; 0.4–0.7 mm long; truncate. Leaf-blades 1–1.7 mm wide; glaucous. Leaf-blade surface scabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; oblong. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2–3 fertile florets; with diminished florets at the apex. Spikelets oblong, or ovate; laterally compressed; 4–5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes glabrous. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 2.3–3.5 mm long; membranous; 1-keeled. Lower glume apex acute. Upper glume lanceolate; 2.3–3.5 mm long; membranous; 1-keeled. Upper glume apex acute.

FLORETS Fertile lemma ovate; 3.3–4 mm long; membranous; keeled; 5 -veined. Lemma surface puberulous; hairy on veins. Lemma apex acute. Palea keels scaberulous. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3.

DISTRIBUTION Europe: eastern.

NOTES Poeae. Tzvelev 2011.

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