[1] Leucophyllum (barometer bush or barometerbush)[2][3] is a genus of evergreen shrubs in the figwort family, Scrophulariaceae, native to the southwestern United States and Mexico.

[1] The dozen-odd species are often called "sages", although they have no relationship to the genus Salvia.

The solitary axillary flowers are bell- or funnel-shaped, with five lobes and two lips, and colors ranging from white to magenta to purple.

Cultivars of L. frutescens, L. candidum, L. laevigatum, L. langmaniae, L. pruinosum, L. revolutum, and L. zygophyllum have been developed.

[5] Leucophyllum shrubs are legendary for their ability to "forecast" rain, usually blooming several days prior to a rainstorm, apparently in response to humidity.