Leaf blade glaucous-green, to 8 mm wide. Spathe (3-)4-5 cm. Flowers erect; perianth white, sometimes flushed pink abaxially, more so with age, broadly funnelform, 6-9 cm; perianth tube white to green, 3-4(-4.7) cm, diam. primarily uniform, ca. 1/2 perianth length, more than 15 times filament length, equaling (3/4-11/4) spathe length; tepals rarely reflexed; stamens fasciculate, distinctly subequal; filaments subulate, 0.1-0.2 cm, apex acute; anthers 5-8 mm; style notably shorter than perianth tube; stigma 3-fid, included in perianth tube; pedicel (0.2-)0.5-2(-3.3) cm, shorter than spathe. 2n = 48, 72. Flowering mid spring--mid summer (Mar--Aug). Sandy/rocky, usually calcareous soils; 0--900 m; Fla., La., Tex.; ne Mexico. Specimens of Zephyranthes drummondii with rare biflowered inflorescences were collected by B. C. Tharp in 1939 and 1946 in Austin, Texas. The species has naturalized in Florida.