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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.
HABIT Perennial. Culms geniculately ascending, or decumbent; 60–75 cm long; rooting from lower nodes. Culm-internodes terete. Lateral branches lacking. Ligule a ciliolate membrane. Leaf-blades lanceolate, or ovate.
INFLORESCENCE Inflorescence composed of racemes.
Racemes digitate; unilateral. Rhachis angular. Spikelet packing broadside to rhachis.
Spikelets appressed; solitary. Fertile spikelets pedicelled. Pedicels oblong.
FERTILE SPIKELETS Spikelets comprising 2 fertile florets; with diminished florets at the apex. Spikelets laterally compressed; 5.4–5.6 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite.
GLUMES Glumes persistent; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; 1 length of upper glume; coriaceous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface without pits. Lower glume apex acute. Upper glume elliptic; 1.8–2.3 length of adjacent fertile lemma; coriaceous; 1-keeled; 1 -veined. Upper glume apex acute.
FLORETS Fertile lemma oblong; hyaline; wingless; 3 -veined. Lemma surface scaberulous; unwrinkled; without grooves. Lemma apex obtuse; pubescent. Palea 2 -veined. Apical sterile florets 1 in number; rudimentary.
FLOWER Lodicules 2; fleshy; truncate. Anthers 3.
FRUIT Caryopsis with adherent pericarp; fusiform; isodiametric; trigonous; apex bicornate. Embryo 0.33 length of caryopsis. Hilum punctiform.
DISTRIBUTION South America.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.