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Descriptions

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

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

Koeleria lobata

HABIT Perennial; caespitose; clumped densely. Rhizomes short. Butt sheaths thickened and forming a bulb; persistent and investing base of culm; with compacted dead sheaths. Basal innovations intravaginal. Culms erect; 20–45 cm long. Leaves mostly basal. Leaf-sheaths outer margin glabrous, or hairy. Ligule an eciliate membrane. Leaf-blades filiform, or linear; flat, or convolute; 3–5 cm long; 1 mm wide; stiff; glaucous. Leaf-blade surface scabrous; rough adaxially; glabrous, or pubescent; hairy abaxially. Leaf-blade margins ciliate.

INFLORESCENCE Inflorescence a panicle.

Panicle spiciform; oblong; continuous, or interrupted; 3–8 cm long; 1.2 cm wide. Panicle axis puberulous. Panicle branches puberulous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong.

FERTILE SPIKELETS Spikelets comprising 2–3 fertile florets; with diminished florets at the apex. Spikelets oblong, or cuneate; laterally compressed; (4–)6–8 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pubescent.

GLUMES Glumes persistent; similar; shorter than spikelet, or reaching apex of florets; similar to fertile lemma in texture; shiny; gaping. Lower glume oblong; 0.7–0.8 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface glabrous, or pubescent; hairy above. Lower glume apex attenuate. Upper glume oblong; 1–1.2 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume surface glabrous, or pubescent; hairy above. Upper glume apex attenuate.

FLORETS Fertile lemma oblong; 4–6 mm long; membranous; much thinner on margins; shiny; keeled; keeled above; 3 -veined. Lemma apex acuminate to setaceously attenuate; muticous. Palea gaping. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; oblong; membranous; 2-toothed. Anthers 3. Ovary glabrous.

DISTRIBUTION Europe: southwestern, southeastern, and eastern. Africa: north. Asia-temperate: western Asia.

NOTES Aveneae. Fl Eur 1997.

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