GrassBase - The Online World Grass Flora


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

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

Alopecurus magellanicus

HABIT Perennial. Rhizomes elongated. Culms erect; 20–100 cm long; 3–6 -noded. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 4–6 mm long. Leaf-blades 10–35 cm long; 5–10 mm wide. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle. Peduncle tipped by a glumaceous appendage.

Panicle spiciform; oblong, or ovate; 1.5–5 cm long; 0.9–1.2 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 ovate; laterally compressed; 4.5–6 mm long; falling entire.

GLUMES Glumes connate along margins below; 0.5 of their length connate; similar; exceeding apex of florets. Lower glume lanceolate; 4.5–6 mm long; 1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume primary vein ciliate. Lower glume surface pubescent. Lower glume hairs 1–2 mm long. Lower glume apex acute. Upper glume lanceolate; 4.5–6 mm long; 1.3 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein ciliate. Upper glume surface pubescent. Upper glume hairs 1–2 mm long. Upper glume apex acute.

FLORETS Fertile lemma ovate; 3.5–4.5 mm long; membranous; keeled; 5 -veined. Lemma margins connate below; with 0.5 of their length connate; ciliolate; hairy above. Lemma apex obtuse; awned; 1 -awned. Principal lemma awn dorsal; arising 0.25–0.33 way up back of lemma; geniculate; 4.5–9 mm long overall; with twisted column.

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

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

DISTRIBUTION Europe: eastern. Asia-temperate: Siberia, Soviet far east, Soviet Middle Asia, western Asia, and Mongolia. North America: Subarctic, western Canada, eastern Canada, northwest USA, and southwest USA. South America: western South America and southern South America. Antarctic: Subantarctic islands.

NOTES Aveneae. Fl Pat 1995.

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