Zephyranthes drummondii

Zephyranthes drummondii, commonly known as Evening rain lily, evening star rain lily, giant rain lily, hill country rain lily, prairie lily, or rain lily, is a perennial species of flowering plant in the amaryllis family. It is found from northwest Florida to northeast Mexico.

Description
It is a perennial herb that grows 16 to 45 cm tall. The leaf blades are glaucous-green, and are up to 8 mm wide. The spathe is 3–5 cm long. The flowers are erect; the funnelform perianth is 6 to 9 cm long and is white, sometimes "flushed pink abaxially". The perianth tube is white to green, and is 3 to 4.7 cm long. The tepals are rarely reflexed. The stamens are fasciculate, and are distinctly subequal. The filaments are subulate, and are 0.1 to 0.2 cm long. The anthers are 5 to 8 mm long.

It flowers from March to August.

Distribution and habitat
It is found in Florida, Texas, Louisiana and northeast Mexico from elevations of 0 to 900 meters from sea level. It grows in sandy or rocky, usually calcareous soils.