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Descriptions

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

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

Chloris bournei

HABIT Perennial. Stolons present. Basal innovations flabellate. Culms geniculately ascending; 50–100 cm long. Leaf-sheaths glabrous on surface. Ligule a ciliate membrane. Leaf-blades 5–10 cm long; 2–5 mm wide. Leaf-blade surface glabrous, or pubescent; hairy abaxially, or on both sides.

INFLORESCENCE Inflorescence composed of racemes. Peduncle glabrous.

Racemes 3–9; digitate; unilateral; 6–9 cm long. Rhachis subterete; scabrous on surface. Spikelet packing broadside to rhachis; regular.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 3–3.7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent; obtuse.

GLUMES Glumes persistent; similar; reaching apex of florets; thinner than fertile lemma; gaping. Lower glume lanceolate, or ovate; 1.5–2.5 mm long; 0.6–0.7 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate, or ovate; 3.2–3.7 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma elliptic, or obovate; laterally compressed; 3–3.7 mm long; cartilaginous; keeled; 3 -veined. Lemma midvein pubescent. Lemma margins pubescent. Lemma apex obtuse; awned; 1 -awned. Principal lemma awn subapical; 3.5–7 mm long overall. Apical sterile florets 2–3 in number; barren; in a clump; cuneate; 1.5–2.8 mm long. Apical sterile lemmas glabrous, or pubescent; adorned on keel; truncate; awned; 1 -awned. Apical sterile lemma awns 3–4 mm long; 2–3 per spikelet in number.

FLOWER Lodicules 2; cuneate; fleshy. Anthers 3. Stigmas 2.

FRUIT Caryopsis with adherent pericarp; ellipsoid, or ovoid; dorsally compressed; trigonous; 1.7 mm long.

DISTRIBUTION Asia-tropical: India.

NOTES Cynodonteae. Anderson.

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