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Descriptions

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

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

Paspalum goyasense

HABIT Perennial; caespitose. Culms erect; 40–65 cm long; 1 mm diam.; 2–3 -noded. Culm-internodes 6–20 cm long; distally glabrous. Culm-nodes brown; pubescent. Lateral branches lacking. Leaves mostly basal. Leaf-sheaths 3–10 cm long; pilose; with tubercle-based hairs. Ligule an eciliate membrane; 0.5–0.9 mm long; brown. Collar pilose. Leaf-blades 8–20 cm long; 2–4 mm wide; stiff. Leaf-blade surface pilose; densely hairy; hairy abaxially; with tubercle-based hairs. Leaf-blade margins ciliate. Leaf-blade apex acute.

INFLORESCENCE Inflorescence composed of racemes; bracteate at branch bases. Peduncle 15–30 cm long.

Racemes 2; paired; unilateral; 2–7 cm long. Central inflorescence axis 0–3 cm long. Rhachis broadly winged; 1–1.6 mm wide. Spikelet packing abaxial; 2 -rowed. Raceme-bases glabrous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong; glabrous.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; plano-convex; acute; 4–5 mm long; 1–1.1 mm wide; falling entire.

GLUMES Glumes one the lower absent or obscure; reaching apex of florets; thinner than fertile lemma. Upper glume elliptic; 1 length of spikelet; membranous; without keels; 3 -veined. Upper glume surface hirsute; hairy below. Upper glume apex acute.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic; 1 length of spikelet; membranous; 3–5 -veined; hirsute; hairy below; obtuse. Fertile lemma elliptic; gibbous; 3.2–4 mm long; 0.9 mm wide; cartilaginous; without keel. Lemma surface papillose. Lemma margins flat. Lemma apex pubescent. Palea involute; indurate.

FLOWER Lodicules 2; 0.3 mm long. Anthers 3; 2 mm long.

FRUIT Caryopsis with adherent pericarp; obovoid; 2 mm long. Embryo 0.33 length of caryopsis. Hilum elliptic.

DISTRIBUTION South America: Brazil.

NOTES Paniceae. Davidse et al 2002.

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