10e. var. yadkinense (Ashe) Lelong

Panicum yadkinense Ashe

Dichanthelium yadkinense (Ashe) Mohlenbr.

Main stems with the nodes glabrous or sparsely and inconspicuously hairy. Leaf sheaths glabrous or the lowermost sparsely hairy along the margins, often with pale, glandular spots. Leaf blades relatively broad, those of the leaves toward the middle of the main stem 7–12(–15) mm wide, broadest at or just above the base, glabrous or hairy along the margins near the base. Spikelets 2.0–2.5 mm long, pointed at the tip, glabrous. 2n=18. May–June (vernal), July–October (autumnal).

Uncommon, known only from Reynolds County (southeastern U.S. west to Missouri and Texas). Mesic upland forests and bases of bluffs, on igneous substrates.

This is among the most distinctive of the variants within the P. dichotomum complex. It was first reported for Missouri by Heumann (1993). It appears to be uncommon throughout its range.