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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 falconeri

HABIT Perennial; caespitose; clumped loosely. Butt sheaths coriaceous; persistent and investing base of culm; with compacted dead sheaths. Culms decumbent; robust; 25–75 cm long; rooting from lower nodes. Culm-internodes terete; smooth. Lateral branches lacking. Leaves mostly basal. Ligule an eciliate membrane; 2.5–4 mm long; obtuse. Leaf-blades 6–20 cm long; 2–4 mm wide; flaccid. Leaf-blade surface scabrous; rough on both sides. Leaf-blade margins scabrous. Leaf-blade apex attenuate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; lanceolate; 8–15 cm long. Primary panicle branches appressed; 1–2 -nate. Panicle branches flexuous; smooth, or with occasional prickles, or scaberulous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2–3 fertile florets; with diminished florets at the apex. Spikelets elliptic, or oblong; laterally compressed; 7–8 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes eventually visible between lemmas; smooth. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume oblong, or ovate; 3.5–4 mm long; 0.75 length of upper glume; membranous; 1-keeled; 1(–3) -veined. Lower glume lateral veins absent, or obscure. Lower glume apex acute. Upper glume oblong, or ovate; 4.5–5 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.

FLORETS Fertile florets divergent. Fertile lemma ovate; elliptic in profile; 4–5 mm long; membranous; glandular on surface; keeled; 5 -veined. Lemma midvein ciliolate. Lemma surface pubescent; hairy below; hairy on veins. Lemma margins ciliolate. Lemma apex acute. Palea 0.9 length of lemma. Palea keels scabrous; adorned above. Apical sterile florets resembling fertile though underdeveloped.

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

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-temperate: China. Asia-tropical: India.

NOTES Poeae. Fl Pak.

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