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.

Alopecurus bornmuelleri

HABIT Annual; caespitose; clumped loosely. Culms erect; 25–35 cm long. Ligule an eciliate membrane; 2 mm long. Leaf-blades 4–6 cm long; 2–5 mm wide.

INFLORESCENCE Inflorescence a panicle; subtended by an inflated leaf-sheath.

Panicle spiciform; oblong; 2–4 cm long; 1 cm wide. Panicle axis with rounded ribs.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 6–6.5 mm long; falling entire.

GLUMES Glumes connate along margins below; 0.33 of their length connate; similar; exceeding apex of florets; parallel to lemmas. Lower glume oblong; 6–6.5 mm long; 1 length of upper glume; membranous; 1-keeled; winged on keel; winged narrowly; 3 -veined. Lower glume primary vein scabrous; ciliate (below). Lower glume apex acute. Upper glume oblong; 6–6.5 mm long; 1.1 length of adjacent fertile lemma; membranous; 1-keeled; winged on keel; 3 -veined. Upper glume primary vein scabrous; ciliate (below). Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 5.5–6 mm long; membranous; keeled; 5 -veined. Lemma margins connate below; with 0.33 of their length connate. Lemma apex acute; awned; 1 -awned. Principal lemma awn dorsal; arising 0–0.1 way up back of lemma; geniculate; 8–12 mm long overall; with twisted column.

FLOWER Lodicules absent. Anthers 3. Stigmas protogynous; terminally exserted; pubescent. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform. Disseminule comprising a spikelet.

DISTRIBUTION Asia-temperate: western Asia.

NOTES Aveneae. Domin 1995.

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