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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 parvispicula

HABIT Perennial; caespitose. Culms erect; 40–60 cm long. Culm-internodes terete; distally glabrous. Leaf-sheaths mostly shorter than adjacent culm internode; glabrous on surface. Leaf-sheath oral hairs ciliate; 3–4 mm long. Ligule a ciliate membrane; 0.5 mm long. Collar glabrous. Leaf-blades flat, or convolute; 2–15 cm long; 2–5 mm wide. Leaf-blade surface scaberulous; rough adaxially; glabrous; hairless except near base. Leaf-blade margins scaberulous.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 6–8; digitate; unilateral; 6–9 cm long. Rhachis angular; scabrous on margins. Spikelet packing broadside to rhachis.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 2–2.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent; obtuse.

GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma; gaping. Lower glume lanceolate; 1.5 mm long; 0.75 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute; mucronate. Upper glume lanceolate; 2–2.5 mm long; 1.5–1.7 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute; mucronate.

FLORETS Fertile lemma ovate; laterally compressed; 1.3–1.5 mm long; cartilaginous; keeled; 3 -veined. Lemma midvein ciliate. Lemma margins ciliate. Lemma apex awned; 1 -awned. Principal lemma awn subapical; 2.5–3 mm long overall. Palea keels ciliolate. Apical sterile florets 2 in number; barren; in a clump; oblong; 2 mm long. Apical sterile lemmas lower awned; 1 -awned. Apical sterile lemma awns 1 per spikelet in number.

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

FRUIT Caryopsis with adherent pericarp; oblong; trigonous; dark brown; truncate. Embryo 0.66 length of caryopsis. Hilum punctiform.

DISTRIBUTION South America: southern South America.

NOTES Cynodonteae. Caro & Sanchez 1997.

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