Eithea is a subgenus of the genus Zephyranthes[2][1] endemic to Brazil.

Eithea are 12–50 cm tall, bulbous plants with ovoid bulbs and 1–8 pseudopetiolate leaves.

[2] The 1–6 pedicellate, zygomorphic, campanulate to infundibuliform flowers are produced on pseudo-umbellate inflorescences with 8–30 cm long, and 2–6 mm wide scapes.

Eithea (Ravenna) Nic.García published by Nicolás García Berguecio in 2019.

[5][2] It has two species:[2] Zephyranthes blumenavia is Endangered (EN), and Zephyranthes lagopaivae is Critically Endangered (CR).