Disocactus

Disocactus Lindl., Edwards's Bot. Reg. 31: t. 9. 1845 sec. Cruz & al. 2016

Type: Disocactus biformis (Lindl.) Lindl.

=Cereus subsect. Heliocereus A.Berger in Rep. (Annual) Missouri Bot. Gard. 16: 78. 1905 syn. sec. Korotkova & al. 2017
≡Heliocereus (A.Berger) Britton & Rose in Contr. U.S. Natl. Herb. 12: 433. 1909 syn. sec. Korotkova & al. 2017

Type: Heliocereus speciosus (Cav.) Britton & Rose

=Chiapasia Britton & Rose, Cactaceae 4: 203. 1923 syn. sec. Korotkova & al. 2017

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

=Nopalxochia Britton & Rose, Cactaceae 4: 204. 1923 syn. sec. Korotkova & al. 2017

Type: Nopalxochia phyllanthoides (DC.) Britton & Rose

=Mediocereus Frič & Kreuz. in Kreuzinger, Verzeichnis Amer. Sukk. Rev. Syst. Kakteen: 19. 1935, nom. illeg., syn. sec. Kew WCVP (2019)

=Trochilocactus Linding. in Beih. Bot. Centralbl., Abt. A, 61: 383. 1942 syn. sec. Korotkova & al. 2017

Type: Trochilocactus eichlamii (Weing.) Linding.

=Bonifazia Standl. & Steyerm. in Publ. Field Mus. Nat. Hist., Bot. Ser. 23: 66. 1944 syn. sec. Korotkova & al. 2017

Type: Bonifazia quezalteca Standl. & Steyerm.

=Lobeira Alexander in Cact. Succ. J. (Los Angeles) 16: 177. 1944 syn. sec. Korotkova & al. 2017

Type: Lobeira macdougallii Alexander

=Pseudonopalxochia Backeb., Cactaceae 1: 69. 1958 syn. sec. Korotkova & al. 2017

Type: Pseudonopalxochia conzattianum (T.MacDoug.) Backeb.

=×Disheliocereus G.D.Rowley in Natl. Cact. Succ. J. 37: 48. 1982 syn. sec. Kew WCVP (2019)

=×Disochia G.D.Rowley in Natl. Cact. Succ. J. 37: 48. 1982 syn. sec. Cruz & al. 2016

Content

Acknowledgments

Compiled by Nadja Korotkova, revised by Salvador Arias

Taxon standing

Category A. The genus is monophyletic based on a complete or very comprehensive phylogenetic study, and a phylogeny-based taxonomic synopsis was published.A,B

Notes

Disocactus was newly circumscribed by Cruz & al. (2016) as the results of their phylogenetic study where Disocactus sensu Barthlott (1991) and Hunt (2006) was found as polyphyletic, with Aporocactus forming a separate lineage and Disocactus including three erstwhile Epiphyllum species.C

Bibliography

A. Cruz, M.Á., Arias, S. & Terrazas, T. 2016: Molecular phylogeny and taxonomy of the genus Disocactus (Cactaceae), based on the DNA sequences of six chloroplast markers. – Willdenowia 46: 145-164

B. Korotkova, N., Borsch, T. & Arias, S. 2017: A phylogenetic framework for the Hylocereeae (Cactaceae) and implications for the circumscription of the genera. – Phytotaxa 327(1): 1-46

C. Korotkova, N. 2021: Revisions of Deamia, Disocactus, Epiphyllum, Hatiora, Kimnachia, Lepismium, Leuenbergeria, Lymanbensonia, Pereskia, Pfeiffera, Pseudorhipsalis, Rhipsalidopsis, Rhipsalis, Schlumbergera, Selenicereus, Strophocactus, Weberocereus, and various other names. In: Korotkova N. & al., Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family. – Willdenowia 51: 250-270