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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 eleanorae

HABIT Perennial; caespitose. Rhizomes elongated. Butt sheaths scarious; yellow; persistent and investing base of culm; with fibrous dead sheaths. Culms geniculately ascending; 20–40 cm long; rooting from lower nodes. Culm-internodes terete; smooth. Culm-nodes glabrous. Lateral branches lacking. Leaves mostly basal. Leaf-sheaths loose; smooth; glabrous on surface. Ligule an eciliate membrane; 2–2.5 mm long; truncate. Leaf-blades erect, or ascending; convolute; 9–18 cm long; 2–3 mm wide. Leaf-blade surface scabrous; rough on both sides. Leaf-blade margins scabrous.

INFLORESCENCE Inflorescence a panicle. Peduncle smooth.

Panicle open; elliptic; 12–24 cm long; 5–10 cm wide. Primary panicle branches 2 -nate. Panicle branches flexuous; smooth, or scaberulous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 6.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1.5 mm long; smooth; pubescent. Floret callus sparsely hairy.

GLUMES Glumes persistent; similar; reaching apex of florets. Lower glume oblong; 6–6.5 mm long; 0.9 length of upper glume; membranous; purple; 1-keeled; 3 -veined. Lower glume primary vein scabrous. Lower glume apex acute. Upper glume oblong; 6.5–7 mm long; 1.2–1.3 length of adjacent fertile lemma; membranous; purple; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume apex acute.

FLORETS Fertile lemma oblong; elliptic in profile; 5–6 mm long; membranous; much thinner above; mid-green, or purple; keeled; 5 -veined. Lemma midvein scabrous; ciliate; hairy below. Lemma lateral veins obscure. Lemma surface asperulous; pubescent; hairy on veins. Lemma apex obtuse. Palea 0.9 length of lemma. Palea keels scabrous; ciliolate; adorned above. Palea surface scaberulous. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; membranous. Anthers 3; 0.75–1 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-tropical: India.

NOTES Poeae. Bor.

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