New! - Search other data sources for Alopecurus davisii

Help - Wrong Description?

Kew Data Sources

Kew's Herbarium Catalogue
ePIC - Electronic Plant Information Centre

External Data Sources

Note - this takes you off of our website
Use your browser's back button to return to this page

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 davisii

HABIT Perennial; caespitose. Rootstock evident. Butt sheaths villous. Culms erect; 7.5–38 cm long; 1 -noded. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 0.5–2 mm long; acute. Leaf-blades convolute; 1–5 cm long; 1–3 mm wide. Leaf-blade surface glabrous. Leaf-blade margins ciliate. Leaf-blade apex obtuse; simple, or apiculate.

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

Panicle capitate; ovate; 0.9–2 cm long; 0.7–1 cm wide. Primary panicle branches accrescent to a central axis; with evident branchlets on axis. Panicle axis with rounded ribs.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 3.5–4.5 mm long; falling entire.

GLUMES Glumes connate along margins below; similar; reaching apex of florets. Lower glume lanceolate; 3.5–4.5 mm long; 1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume primary vein ciliate. Lower glume surface pilose. Lower glume apex acute; awned; 1 -awned. Lower glume awn 1–1.5 mm long. Upper glume lanceolate; 3.5–5.5 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein ciliate. Upper glume surface pilose. Upper glume apex acute; awned; 1 -awned. Upper glume awn 1–1.5 mm long.

FLORETS Fertile lemma oblong; 3.5–4 mm long; membranous; keeled; 5 -veined. Lemma margins connate below; with 0.33 of their length connate. Lemma apex truncate; awned; 1 -awned. Principal lemma awn dorsal; arising 0.1 way up back of lemma; geniculate; 7–10 mm long overall; with twisted column. Palea absent or minute.

FLOWER Lodicules absent. Anthers 3; 2.5–3 mm long. Stigmas terminally exserted; pubescent. Ovary glabrous.

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

DISTRIBUTION Asia-temperate: western Asia.

NOTES Aveneae. Fl Turk 1993.

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