Dichanthelium oligosanthes var. scribnerianum is a perennial C3 grass (Aliscioni et al. 2003), loosely tufted, often purplish, to 70 cm tall, stems hairy to smooth, sheaths usually warty-based hairy (use lens), forming winter rosette of short broad leaf blades, ligule of short hairs 0.1-0.2 cm long.
Leaves alternate, usually hairless above, long-hairy at base, larger leaves to 12 cm long, 1.2 cm wide.
Flower spikelets 0.3-0.4 cm long, smooth to finely hairy, veins heavy, broad, first glume a third the length of spikelet, second glume and sterile lemma about as long as fruit; May-June; primary inflorescence, to 10 cm long, egg-shaped; autumnal phase branched above middle to near the top, forming loose tuft, leaf blades slightly reduced, but longer than the sparsely flowered inflorescences, July-Nov.
Wetland status: FACU.
Frequency in NYC: Very infrequent.
Habitat: Open areas, dry to moist soil.