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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 ekmanii

HABIT Perennial; caespitose. Stolons absent, or present. Basal innovations flabellate. Culms geniculately ascending; slender; 30–45 cm long; wiry. Leaf-sheaths keeled; glabrous on surface. Ligule a ciliate membrane. Leaf-blades filiform; 5–10 cm long; 0.5–1 mm wide. Leaf-blade surface pilose; hairy on both sides.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 3–6; digitate; spreading, or deflexed; flexuous; unilateral; 1.5–5 cm long. Rhachis subterete; scabrous on surface. Spikelet packing broadside to rhachis; regular.

Spikelets appressed; solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 2–3 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded; obtuse.

GLUMES Glumes persistent; similar; reaching apex of florets; thinner than fertile lemma; gaping. Lower glume lanceolate; 1.1–2 mm long; 0.5–0.6 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 2.3–3.6 mm long; 1.1–1.2 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma lanceolate, or elliptic; laterally compressed; 2–3 mm long; 0.4–0.5 mm wide; cartilaginous; keeled; 3 -veined. Lemma margins ciliate; hairy above. Lemma apex acute; awned; 1 -awned. Principal lemma awn subapical; 5.5–10 mm long overall. Apical sterile florets 1 in number; barren; linear; 0.4–1.1 mm long. Apical sterile lemmas acute; awned; 1 -awned. Apical sterile lemma awns 3.3–6 mm long; 1 per spikelet in number.

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

FRUIT Caryopsis with adherent pericarp; ellipsoid; dorsally compressed; trigonous; 1.4 mm long.

DISTRIBUTION South America: Caribbean.

NOTES Cynodonteae. Anderson.

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