Tripterocalyx

Tripterocalyx is a small genus of flowering plants in the four o'clock family, Nyctaginaceae. It contains four species formerly included in the closely related genus Abronia, the sand-verbenas.^[1] These plants are native to North America, especially the dry desert southwest of the United States. They bloom in heads of several colorful trumpet-shaped flowers. Sandpuffs or sand-verbenas are common names for plants in this genus.^[2][3][4]

Tripterocalyx
Tripterocalyx carneus
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Caryophyllales
Family:	Nyctaginaceae
Tribe:	Nyctagineae
Genus:	Tripterocalyx (Torr.) Hook.

Species

There are four species in the genus Tripterocalyx:^[1]

• Tripterocalyx carneus – winged sandpuffs
• Tripterocalyx crux-maltae – Kellogg's sand-verbena^[3]
• Tripterocalyx micranthus – small-flowered sand-verbena^[4]
• Tripterocalyx wootonii (sometimes treated as a variety of T. carneus) – Wooton's sandpuffs^[5]