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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 glabrinode
HABIT Perennial. Culms erect; 100–200 cm long. Culm-internodes 11–17 cm long. Culm-nodes glabrous. Leaf-sheaths 13–25 cm long; longer than adjacent culm internode; hispid; with tubercle-based hairs; outer margin hairy. Ligule an eciliate membrane; 1–1.7 mm long; truncate. Collar pubescent. Leaf-blade base cordate. Leaf-blades 37–60 cm long; 10–15 mm wide. Leaf-blade midrib conspicuous. Leaf-blade surface hispid; hairy on both sides. Leaf-blade margins scaberulous. Leaf-blade apex attenuate.
INFLORESCENCE Inflorescence composed of racemes; bracteate at branch bases.
Racemes numerous; 12–40; borne along a central axis; unilateral; 2–7.5 cm long. Central inflorescence axis 14–25 cm long; hispid. Rhachis narrowly winged; angular; 0.6–1 mm wide; glabrous on surface, or pilose on surface; glabrous on margins, or ciliate on margins. Spikelet packing 4 -rowed. Raceme-bases pubescent.
Spikelets in pairs. Fertile spikelets sessile and pedicelled. Pedicels scaberulous; bearing a few hairs, or glabrous.
FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; concavo-convex; 2.4–3.3 mm long; 0.9–1.1 mm wide; falling entire.
GLUMES Glumes two; reaching apex of florets; thinner than fertile lemma. Lower glume heteromorphic ovate, or lanceolate; 0.2–0.5 mm long, or 1.2–2.1 mm long; membranous; 0 -veined, or 1 -veined. Upper glume ovate; 2.1–2.4 mm long; 0.75–0.9 length of spikelet; membranous; 3–5 -veined. Upper glume primary vein distinct; scabrous. Upper glume surface glabrous, or pubescent; hairy above. Upper glume apex acuminate.
FLORETS Basal sterile florets male; with palea. Lemma of lower sterile floret ovate; 2.2–3.2 mm long; 0.9 length of spikelet; membranous; 5 -veined; with evident midvein; concave across back; scabrous; rough on midvein; obtuse. Fertile lemma elliptic; 2.5–2.9 mm long; 1 mm wide; indurate; yellow; without keel; 5 -veined. Lemma surface papillose; rough in lines. Lemma margins involute. Palea involute; indurate.
FLOWER Anthers 3; 1.2–1.5 mm long; purple.
DISTRIBUTION South America: Brazil and southern South America.
NOTES Paniceae. Morr & Zul 1997.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
