Disocactus Lindley (1845: 31)

Korotkova, Nadja, Borsch, Thomas & Arias, Salvador, 2017, A phylogenetic framework for the Hylocereeae (Cactaceae) and implications for the circumscription of the genera, Phytotaxa 327 (1), pp. 1-46 : 20-21

3. Disocactus Lindley (1845: 31)

Type:— D. biformis (Lindley) Lindley

= Cereus subsect. Heliocereus A. Berger (1905: 78) ≡ Heliocereus (A. Berger) Britton & Rose (1909: 433) = Chiapasia Britton & Rose (1923: 203)

Type:— Chiapasia nelsonii (Britton & Rose) Britton & Rose

= Nopalxochia Britton & Rose (1923: 204)

Type:— Nopalxochia phyllanthoides (A.P. de Candolle) Britton & Rose

= Bonifazia Standley & Steyermark (1944: 66)

Type:— Bonifazia quezalteca Standley & Steyermark

= Pseudonopalxochia Backeberg (1958: 69)

Type:— Pseudonopalxochia conzattiana (T. MacDougal) Backeberg

= Lobeira Alexander (1944: 177)

Type:— Lobeira macdougallii Alexander

= Trochilocactus Lindinger (1942: 383)

Type:— Trochilocactus eichlamii (Weingart) Lindinger

Notes: ―Our results support those obtained by Cruz et al. (2016) to recognize Disocactus as a monophyletic genus, including three erstwhile Epiphyllum species. Also the inclusion of D. macdougallii (Alexander) Barthlott and D. ackermannii subsp. conzattianus (T. MacDougal) U. Guzmán in this genus is confirmed. These taxa have not been included in the aforementioned study. A species-level synopsis of Disocactus has already been provided by Cruz et al. (2016) and is therefore not presented here.

Accepted species:— 15 (7 infraspecific taxa).