Commelina dianthifolia, known as the birdbill dayflower, is a perennial herb native to mountains in the south-western United States (Arizona, Colorado, New Mexico, Texas) and northern Mexico.

[2] Petals are blue while sepals are green.

The inflorescence is a scorpioid cyme and it is subtended by a boat-like spathe.

An infusion of plant used by Keres people as a strengthener for weakened tuberculosis patients.

[3] The Ramah Navajo give a cold simple or compound infusion to livestock as an aphrodisiac.