Heimia salicifolia is a species of flowering plant in the Loosestrife family, Lythraceae.

[2] Common names include shrubby yellowcrest, sinicuichi, sun opener, willow-leaf heimia, sini.

[citation needed] Source:[3] Use of H. salicifolia for shamanic purposes by native peoples of Central America and Mexico has been described.

[citation needed] In the method of preparation commonly used, fresh leaves are collected and allowed to wilt.

The leaves are put into a cup or jar, cool water is added, and the mixture is placed in the sun to brew and ferment for at least 24 hours.