Stems 10–22 cm. Leaves: blade linear-oblanceolate, apex rounded. Dichasial bracts reniform-ovate to subdeltate-ovate, base truncate. Seeds 1.6–1.7 × 1.1–1.3 mm, surface with regular concave depressions. 2n = 26.

Flowering and fruiting spring. Sandy soils; of conservation concern; 200–300 m; Tex.

Variety austrotexana is restricted to Atascosa, Bexar, and Wilson counties. According to M. H. Mayfield (2013), only five documented localities are known.