Contains 3 accepted taxa overall.

Characteristics
Selenicereus (A.Berger)Britton & Rose
MOONLIGHT CACTUS
Classification
CARYOPHYLLALES
Selenicereus
Citation
SELENICEREUS (A. Berger) Britton & Rose, Contr. U.S. Natl. Herb. 12: 429. 1909.
BASIONYM: Cereus Miller, subsect. Selenicereus A. Berger, Rep. (Annual) Missouri Bot. Gard. 16: 76. 1905.
TYPE: Selenicereus grandiflorus (Linnaeus) Britton & Rose 1909. (Cactus grandiflorus Linnaeus 1753.)
Species
Scientific Name Common Name Herbarium Specimens Status Photos
Selenicereus grandiflorus QUEEN OF THE NIGHT Not Native
Selenicereus pteranthus PRINCESS-OF-THE-NIGHT Not Native Y
Selenicereus undatus NIGHTBLOOMING CACTUS Not Native
[Family identification key]
1.  Stems 3-ribbed usually; flower and fruit areoles without conspicuous trichomes; bracts of fruit persistent
1.  Stems with 4-8 ribs; flower and fruit areoles with conspicuous trichomes or spines; bracts of fruits withering-deciduous
2
2.  Stems with 5-8 ribs, areoles with 6-18 spines, these 4-12(15) mm long
2.  Stems with 4-6 ribs, areoles with 1-5 spines, these often 1-3 mm long, occasionally longer
Genus Synonyms
Synonym Full Citation Basionym Type
Cryptocereus Cryptocereus Alexander, Cact. Succ. J. (Los Angeles) 22: 164, f. 64-69. 1950. TYPE: Cryptocereus anthonyanus Alexander 1950.
Hylocereus Hylocereus (A. Berger) Britton & Rose, Contr. U.S. Natl. Herb. 12: 428. 1909. BASIONYM: Cereus Miller, subg. Hylocereus A. Berger, Rep. (Annual) Missouri Bot. Gard. 16: 72. 1905. TYPE: Hylocereus triangularis (Linnaeus) Britton & Rose 1909. (Cactus triangularis Linnaeus 1753.)
Werckleocereus Werckleocereus Britton & Rose, Contr. U.S. Natl. Herb. 12: 432. 1909. TYPE: Werckleocereus tonduzii (F .A .C. Weber) Britton & Rose 1909. (Cereus tonduzii F. A. C. Weber 1902.)
Wilmattea Wilmattea Britton & Rose, Cact. 2: 195, f 272. 1920. TYPE: Wilmattea minutiflora (Britton & Rose) Britton & Rose 1920. (Hylocereus minutiflorus Britton & Rose 1913.)