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GrassBase - The Online World Grass Flora
Descriptions
W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson
© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
Paspalum formosum
HABIT Perennial; caespitose. Rhizomes short. Culms 80–100 cm long. Culm-nodes glabrous. Leaf-sheaths glabrous on surface, or pilose; with tubercle-based hairs; inner surface glabrous. Ligule an eciliate membrane; 1–1.2 mm long. Leaf-blades flat, or convolute; 18–49 cm long; 1–5 mm wide.
INFLORESCENCE Inflorescence composed of racemes.
Racemes 9–13; borne along a central axis; unilateral; 5.5–7.5 cm long. Rhachis 1 mm wide; scabrous on margins.
Spikelets in pairs. Fertile spikelets pedicelled. Pedicels ciliate.
FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; plano-convex; subacute; 2.5–3 mm long; 1.1–2 mm wide; falling entire.
GLUMES Glumes one the lower absent or obscure; reaching apex of florets; thinner than fertile lemma. Upper glume obovate; 1 length of spikelet; membranous; without keels; 5 -veined. Upper glume surface glabrous, or pubescent.
FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret obovate; 1 length of spikelet; membranous; 5 -veined; wrinkled; glabrous. Fertile lemma obovate; 2.5–3 mm long; 1.1–2 mm wide; indurate; dark brown; without keel. Lemma surface papillose. Lemma margins involute. Palea involute; indurate.
FRUIT Caryopsis with adherent pericarp.
DISTRIBUTION South America: Brazil.
NOTES Paniceae. Fl Sao Paulo 2001.
ADDITIONAL CHARACTERS Lower racemes longer, the inflorescence pyramidal.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.