GrassBase - The Online World Grass Flora

Descriptions

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

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

Poa timoleontis

HABIT Perennial; caespitose; clumped densely. Butt sheaths thickened and forming a bulb. Culms 7–15(–20) cm long. Culm-internodes terete; smooth. Lateral branches lacking. Leaves mostly basal. Ligule an eciliate membrane; 3–6 mm long; white. Leaf-blades filiform; involute, or convolute; 2–5 cm long; 0.3–1 mm wide. Leaf-blade margins scaberulous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; dense; 2–4 cm long. Primary panicle branches 1–3 -nate.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 3–7 fertile florets; with diminished florets at the apex. Spikelets ovate; laterally compressed; 2–2.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes smooth. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume elliptic; 2 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume elliptic; 2 mm long; 0.8 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.

FLORETS Fertile lemma ovate; oblong in profile; 2.5 mm long; membranous; keeled; 5 -veined. Lemma midvein ciliolate. Lemma margins ciliolate. Lemma apex acute. Palea 0.9 length of lemma. Palea keels scabrous. Rhachilla extension with 1 mm long hairs.

FLOWER Lodicules 2; membranous. Anthers 3; 1–1.5 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

CLEISTOGENES AND VIVIPARY Vivipary absent, or occurs.

DISTRIBUTION Europe: southeastern. Asia-temperate: Soviet Middle Asia, western Asia, and China.

NOTES Poeae. Fl Turk.

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