Compilation
Sporobolus arenarius

perennial; rhizome often long creeping, stoloniferous; stolons emitting fascicled or solitary ascending culms, these 2–12 in. long, glabrous, very many-noded, sheathed nearly all along, internodes alternately very short and long, hence the leaves appear opposite; culm-sheaths rather tight, slightly compressed, glabrous or sometimes ciliate along the margins and bearded at the mouth, smooth; ligule a ciliolate rim; blades subulate-involute, often pungent, rarely flat towards the base, from 1/3–4 in. long, rigid, firm, closely and strongly nerved, glabrous or scantily long-hairy above, margins scaberulous; panicle spike-like, cylindric, compact, rarely somewhat loosened, 1/2–3 in. long; branches short, branched from the base, scaberulous; pedicels very short; spikelets light to dark olive-green, 1–1 1/2 lin. long; glumes lanceolate, acute or acuminate, keels acute, scaberulous above, the lower equalling 1/2– 4/5 of the upper, the latter as long as the valve or slightly longer and like it 1-nerved; pale slightly shorter; stamens 3; anthers 3/4–1 lin.; grain ellipsoid, 2/5 lin. long, light brown; pericarp thin. null