Peniocereus
| Peniocereus | |
|---|---|
| Peniocereus greggii flower | |
| Scientific classification | |
| Kingdom: | Plantae | 
| Clade: | Tracheophytes | 
| Clade: | Angiosperms | 
| Clade: | Eudicots | 
| Order: | Caryophyllales | 
| Family: | Cactaceae | 
| Subfamily: | Cactoideae | 
| Tribe: | Echinocereeae | 
| Genus: | Peniocereus (A.Berger) Britton & Rose | 
| Synonyms | |
Peniocereus is a genus of vining cacti, comprising about 18 species, found from the southwestern United States and Mexico. They have a large underground tuber, thin and inconspicuous stems. Its name comes from the prefix penio- (from the Latin penis, meaning ‘tail’) and Cereus, the large genus from which it was split.
Known as the desert night-blooming cereus, it also shares its common names of "night-blooming cereus" and "queen of the night" with many other similar cacti.