Palafoxia


Palafoxia, or palafox, is a genus of North American flowering plants in the Bahia tribe within the Asteraceae.

Description

The erect, slender stem grows tall, branching in the lower half and is sparsely leaved. It is glandular and hairy on the upper parts.
The glabrous, glandular leaves are lanceolate, wide and long, and are arranged alternately.
A few flower heads appear at the end of the upper branches. The reddish to pink ray florets have three narrow lobes. They are subtended by involucral bracts.
The seed-like fruit is narrow with a pappus of several pointed scales. These plants self-sow freely.

Taxonomy

The genus is named after José de Palafox y Melzi, Duke of Saragossa, a Spanish captain-general in the Peninsular War against the invading armies of Napoleon.
;Species

Distribution and habitat

These are drought-tolerant, annual herbs growing on sandy plains, dunes, deserts and rangeland, native to the United States and Mexico. P. callosa is naturalised in Hawaii.

Ecology

They are attractive to bees, butterflies and birds and are used as food plants by the larvae of some Lepidoptera species including Schinia niveicosta, which feeds exclusively on P. linearis.

Uses

Palafoxia rosea has been used in folk medicine for the treatment of fever, nausea and chills.