''Tripterocalyx'' is a small genus of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. They include all forbs (flowering plants without a woody stem), grasses and grass-like plants, a vast majority of ...

s in the

four o'clock family Nyctaginaceae, the four o'clock family, is a family of around 33 genera and 290 species of flowering plants, widely distributed in tropical and subtropical regions, with a few representatives in temperate regions. The family has a unique fruit t ...

, Nyctaginaceae. It contains four species formerly included in the closely related genus ''

Abronia ''Abronia'' may refer to: *Abronia (gens) The gens Abronia was a Roman family during the time of the emperor Augustus. The ''gens'' is known primarily by two persons, the poet Abronius Silo, and his son, who wrote for pantomimes. See also * Lis ...

'', the sand-verbenas.Flora of North America
/ref> 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.

Species

There are four species in the genus ''Tripterocalyx: *'' Tripterocalyx carneus'' – winged sandpuffs *''

Tripterocalyx crux-maltae ''Tripterocalyx crux-maltae'' is a species of flowering plant in the four o'clock family known by the common names Lassen sandverbena and Kellogg's sand-verbena. Distribution It is native to a section of the Great Basin straddling the far nort ...

'' – Kellogg's sand-verbena *''

Tripterocalyx micranthus ''Tripterocalyx micranthus'' is a species of flowering plant in the four o'clock family known by the common names smallflower sandverbena and small-flowered sand-verbena. It is native to North America, where it is known from southern Alberta an ...

'' – small-flowered sand-verbena *'' Tripterocalyx wootonii'' (sometimes treated as a variety of ''T. carneus'') – Wooton's sandpuffs

References

Nyctaginaceae Caryophyllales genera {{Caryophyllales-stub