Flora of the Hawaiian Islands
Monocotyledon Literature for Paspalum urvillei
Wagner et al., 1990, 1999.
   Poaceae -- The Grass Family Bibliography
      Paspalum urvillei

Common name(s): vasey grass
General Information
DistributionNative to the New World, now naturalized in many subtropical regions.In the Hawaiian Islands, naturalized on Midway, Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Hawai`i.

Perennials; culms tufted, stout, erect, 7-25 dm tall, unbranched or branching from lower nodes, sometimes from the middle node, slightly compressed, glabrous, purplish toward base.
Sheaths keeled and coarsely hirsute or glabrate toward summit, the basal sheaths loose, the cauline sheaths glabrous or sometimes ciliate on margins, sometimes weakly auricled; ligule triangular, 3-5 mm long; blades flat, ascending, relatively firm, usually (12-)20-30(-65) cm long, 3-20 mm wide, densely long-pilose at the very base, margins scabrous, slightly rounded at base or narrowed to the width of the sheath.
Panicles erect, 10-42 cm long, peduncles angled, glabrous, racemes (6-)12-18(-25), ascending to slightly drooping, 7-14 cm long, the rachis flat, narrowly winged, ca. 0.8 mm wide, with a few long hairs at base, margins scabrous, pedicels slender, flattened; spikelets paired, imbricate, ovate, depressed plano-convex, (2-)2.2-2.7(-3) mm long, 1.2-1.5 mm wide; first glume absent, second glume and first lemma equal, thin, 3-5-nerved, margins of both copiously pubescent with long silky white hairs, second glume sparsely appressed silky pubescent throughout; second lemma thick, cartilaginous, slightly convex, glabrous or nearly so at the middle, 3-nerved; palea flat to slightly convex, 2-nerved, similar to lemma.
Caryopsis pale, elliptic, plano-convex, 1.8-2 mm long, nearly smooth.
2n = 40, 60