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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.
Koeleria fueguina
HABIT Perennial; caespitose. Rhizomes short. Culms erect, or geniculately ascending; 20–45 cm long; 2–3 -noded. Leaf-sheaths pilose. Ligule a ciliolate membrane; 0.5–2 mm long. Leaf-blades flat, or convolute; 6–18 cm long; 1–2 mm wide. Leaf-blade surface pubescent. Leaf-blade margins ciliate.
INFLORESCENCE Inflorescence a panicle. Peduncle pubescent above.
Panicle contracted; lanceolate, or oblong; interrupted; 3.5–10 cm long; 1–1.8 cm wide. Panicle axis pubescent. Panicle branches pubescent.
Spikelets solitary. Fertile spikelets pedicelled. Pedicels 2–2.5 mm long; ciliate.
FERTILE SPIKELETS Spikelets comprising 2–3 fertile florets; with a barren rhachilla extension, or with diminished florets at the apex. Spikelets obovate; laterally compressed; 4–6 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 0.4–0.75 mm long; pubescent. Floret callus pubescent. Floret callus hairs 0.5–1 mm long.
GLUMES Glumes persistent; similar; reaching apex of florets; similar to fertile lemma in texture; shiny; gaping. Lower glume lanceolate; 0.9 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein ciliate. Lower glume lateral veins absent. Lower glume hairs 0.5–1 mm long. Lower glume apex acute. Upper glume oblong; 1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein ciliate. Upper glume hairs 0.5–1 mm long. Upper glume apex acute.
FLORETS Fertile lemma elliptic; 4.5–6 mm long; membranous; shiny; keeled. Lemma surface scabrous. Lemma apex acute; awned; 1 -awned. Principal lemma awn subapical; straight, or curved; 1.5–4 mm long overall. Palea gaping. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Lodicules 2; membranous. Anthers 3; 0.5–0.8 mm long. Ovary glabrous.
FRUIT Caryopsis with adherent pericarp; ovoid; 2–2.5 mm long; dark brown. Endosperm liquid.
DISTRIBUTION South America: southern South America.
NOTES Aveneae. Fl Pat 1995.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
