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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.
Calamagrostis emirnensis
HABIT Perennial. Culms decumbent; 60–80 cm long. Ligule an eciliate membrane; 3–4 mm long. Leaf-blades 10–20 cm long; 2–6 mm wide.
INFLORESCENCE Inflorescence a panicle.
Panicle open; elliptic; 12–25 cm long.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 3.5–4 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. Floret callus hairs 2.5 mm long; 0.8 length of lemma.
GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; shiny; gaping. Lower glume lanceolate; 3.5–4 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 3.5–4 mm long; 1.1–1.3 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acuminate.
FLORETS Fertile lemma oblong; 3 mm long; hyaline; without keel; 5 -veined. Lemma lateral veins excurrent. Lemma apex erose; truncate; awned; 1 -awned. Principal lemma awn subapical; straight; 2.5 mm long overall; without a column. Palea 2.5–3 mm long; 0.75–1 length of lemma; hyaline.
FLOWER Lodicules 2; membranous. Anthers 3; 0.8 mm long.
FRUIT Caryopsis with adherent pericarp. Hilum linear.
DISTRIBUTION Africa: western Indian ocean.
NOTES Aveneae. WDC 1994.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.