Zephyranthes sulphurea??

The name Zephyranthes sulphurea, sometimes regarded as a synonym or trade name for Zephyranthes citrina, refers to a small bulbous plant in the amaryllis family, native to Mexico, where it grows in natural grasslands. The bulb produces clumps of narrow, linear, glossy dark green leaves. In summer, often after rain, it bears upright, funnel-shaped, lemon- to sulphur-yellow flowers 3-5 cm long with a greenish tube. Hardier than many other species in the genus, it tolerates a wide range of soils, from boggy to dry. It grows best in full sun on well-drained soil, with regular watering during the growing season.