Leaf blade dull green, to 3 mm wide. Spathe 1.9-3.8 cm. Flowers erect; perianth cadmium yellow, funnelform, (1.9-)2.2-4(-6) cm; perianth tube green, (0.2-) 0.5-0.9(-1) cm, increasing in diam., less than 1/4 perianth length, ca. 1/2 (1/5-2/3) filament length, ca. 1/6 (1/8-1/4) spathe length; tepals rarely reflexed; stamens diverging, appearing equal; filaments filiform, (0.5-)0.7-1.1(-1.5) cm; anthers 3-7 mm; style longer than perianth tube; stigma capitate, usually among anthers; pedicel (0.3-)1.4-3.3(-4.4) cm, sometimes longer than spathe. 2n = 48.

Flowering late spring--late fall (May--Dec). Primarily low, sandy-loam open fields, swales, ditches, coastal plains; 0--400 m; Tex.; ne Mexico.