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Descriptions

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

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

Enneapogon cenchroides

HABIT Annual, or perennial; short-lived; caespitose. Butt sheaths withering. Culms decumbent; 15–100 cm long; wiry. Culm-internodes distally pubescent. Ligule a fringe of hairs. Leaf-blades 3–25 cm long; 3–7 mm wide.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; lanceolate; continuous, or interrupted; 3–20 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 3–5 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume ovate; 3–4 mm long; 0.6–0.8 length of upper glume; membranous; grey; without keels; 5–7 -veined. Lower glume surface pubescent. Lower glume apex acute. Upper glume ovate; 3.5–5.5 mm long; 2.5 length of adjacent fertile lemma; membranous; grey; without keels; 3 -veined. Upper glume surface pubescent. Upper glume apex emarginate.

FLORETS Fertile lemma oblong; 1.5–2 mm long; chartaceous; without keel; 9 -veined. Lemma surface villous; hairy below. Lemma apex dentate; 9 -fid; awned; 9 -awned. Principal lemma awn 2.5–5 mm long overall; limb ciliate. Lateral lemma awns arising on apex of lobes; subequal to principal; ciliate. Palea keels ciliolate. Apical sterile florets 2 in number; dissimilar. First apical floret male; oblong; villous. Apical sterile florets barren; rudimentary. Apical sterile lemmas awned; 9 -awned. Apical sterile lemma awns 0.7–2 mm long; ciliate.

FLOWER Lodicules 2. Anthers 3; 1–2.7 mm long.

FRUIT Caryopsis with adherent pericarp. Embryo 0.75 length of caryopsis. Hilum punctiform.

DISTRIBUTION Africa: west tropical, west-central tropical, northeast tropical, east tropical, southern tropical, south, middle Atlantic ocean, and western Indian ocean. Asia-temperate: Arabia. Asia-tropical: India.

NOTES Pappophoreae. FTEA.

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