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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 laguroides
HABIT Perennial; caespitose; clumped densely. Rhizomes short. Butt sheaths glabrous. Culms erect; 5–20 cm long; 1–2 -noded. Culm-internodes distally glabrous. Leaves mostly basal. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 0.3–1 mm long; erose; truncate. Leaf-blades flat, or convolute; 1–8 cm long; 0.5–2.5 mm wide. Leaf-blade surface glabrous. Leaf-blade margins smooth, or scaberulous. Leaf-blade apex obtuse to acuminate.
INFLORESCENCE Inflorescence a panicle; subtended by an unspecialized leaf-sheath, or an inflated leaf-sheath.
Panicle capitate; elliptic, or ovate; 0.8–2 cm long; 0.8–1.4 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 mm long; falling entire.
GLUMES Glumes free, or connate along margins below; 0–0.1 of their length connate; similar; exceeding apex of florets. Lower glume linear; 3.5–4 mm long; 1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume primary vein ciliate. Lower glume surface villous. Lower glume apex acute; awned; 1 -awned. Lower glume awn 0.8–2 mm long; ciliate. Upper glume linear; 3.5–4 mm long; 1.5 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein ciliate. Upper glume surface villous. Upper glume apex acute; awned; 1 -awned. Upper glume awn 0.8–2 mm long; ciliate.
FLORETS Fertile lemma oblong; 2.4–3 mm long; membranous; keeled; 5 -veined. Lemma surface pubescent; hairy above. Lemma margins connate below. Lemma apex obtuse; awned; 1 -awned. Principal lemma awn dorsal; arising 0.1–0.25 way up back of lemma; geniculate; 7–9 mm long overall; with twisted column. Palea absent or minute.
FLOWER Lodicules absent. Anthers 3; 1–1.4 mm long; yellow, or purple. 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.
