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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 fasciculatum
HABIT Perennial. Stolons present. Culms decumbent; 200–300 cm long; 5–7 mm diam.; rooting from lower nodes. Culm-internodes solid; distally glabrous. Culm-nodes swollen. Lateral branches lacking, or sparse. Leaf-sheaths glabrous on surface, or pilose; outer margin hairy. Leaf-sheath oral hairs ciliate; 3–4 mm long. Ligule an eciliate membrane; 0.3–0.7 mm long; brown. Leaf-blades 20–70 cm long; 10–20 mm wide. Leaf-blade midrib keeled beneath. Leaf-blade surface glabrous, or pilose; sparsely hairy.
INFLORESCENCE Inflorescence composed of racemes. Peduncle 3–6 cm long.
Racemes 8–33; borne along a central axis; unilateral; 7–16 cm long. Central inflorescence axis 5–11 cm long. Rhachis narrowly winged; 0.8–1.4 mm wide. Spikelet packing abaxial; 2 -rowed. Raceme-bases brief; pilose.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; compressed strongly; acuminate; 3.7–4.6 mm long; falling entire.
GLUMES Glumes one the lower absent or obscure, or two; reaching apex of florets; thinner than fertile lemma. Lower glume oblate; 0.05 mm long; 0 -veined. Lower glume lateral veins absent. Upper glume ovate; 1 length of spikelet; membranous; without keels; 3–5 -veined. Upper glume margins ciliate.
FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 3–7 -veined; ciliolate on margins. Fertile lemma ovate; 3.3–4.3 mm long; indurate; pallid; without keel. Lemma surface striate. Lemma margins involute. Lemma apex acute. Palea involute; indurate.
FLOWER Anthers 3; 2.2–2.8 mm long; orange.
FRUIT Caryopsis with adherent pericarp; ellipsoid; 2 mm long.
DISTRIBUTION Australasia: Australia. North America: Mexico. South America: Mesoamericana, Caribbean, northern South America, western South America, Brazil, and southern South America.
NOTES Paniceae. Fl Costaric 1993.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
