Paspalum guayanerum

HABIT Annual. Culms 20–40 cm long. Leaf-sheaths hirsute. Ligule an eciliate membrane; 1–1.5 mm long. Leaf-blades 10–20 cm long; 2–3 mm wide. Leaf-blade surface hirsute.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 2–9; borne along a central axis; arcuate; unilateral; 0.5–0.8 cm long. Rhachis broadly winged; foliaceous; 0.5 mm wide; hirsute on surface; terminating in a barren extension. Spikelet packing abaxial; 1 -rowed.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; plano-convex; 1 mm long; 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. Upper glume surface glabrous. Upper glume apex acute.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic; 1 length of spikelet; membranous; glabrous; acute. Fertile lemma elliptic; 1 mm long; indurate; light brown; without keel. Lemma margins involute. Palea involute; indurate.

FLOWER Anthers 3.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION North America: Mexico.

NOTES Paniceae. Beetle 2001.

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