''Disocactus speciosus'', the sun cactus, is a species of flowering plant in the family

Cactaceae A cactus (, or less commonly, cactus) is a member of the plant family Cactaceae, a family comprising about 127 genera with some 1750 known species of the order Caryophyllales. The word ''cactus'' derives, through Latin, from the Ancient Greek ...

. It is native to Mexico, Honduras and Guatemala, and has been introduced to the

Canary Islands The Canary Islands (; es, Canarias, ), also known informally as the Canaries, are a Spanish autonomous community and archipelago in the Atlantic Ocean, in Macaronesia. At their closest point to the African mainland, they are west of Morocc ...

. As its synonym ''Heliocereus speciosus'' it has gained the

Royal Horticultural Society The Royal Horticultural Society (RHS), founded in 1804 as the Horticultural Society of London, is the UK's leading gardening charity. The RHS promotes horticulture through its five gardens at Wisley (Surrey), Hyde Hall (Essex), Harlow Carr (Nort ...

Award of Garden Merit The Award of Garden Merit (AGM) is a long-established annual award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performance under UK growing conditions. History The Award of Garden Merit ...

Subtaxa

The following subspecies are accepted: *''Disocactus speciosus'' subsp. ''blomianus'' (Kimnach) Ralf Bauer –

Chiapas Chiapas (; Tzotzil language, Tzotzil and Tzeltal language, Tzeltal: ''Chyapas'' ), officially the Free and Sovereign State of Chiapas ( es, Estado Libre y Soberano de Chiapas), is one of the states that make up the Political divisions of Mexico, ...

*''Disocactus speciosus'' subsp. ''cinnabarinus'' (Eichlam ex Weing.) Ralf Bauer – southern Mexico, Honduras *''Disocactus speciosus'' subsp. ''heterodoxus'' (Standl. & Steyerm.) M.Á.Cruz & S.Arias – Guatemala *''Disocactus speciosus'' subsp. ''speciosus''

References

speciosus Flora of Northwestern Mexico Flora of Northeastern Mexico Flora of Central Mexico Flora of Southwestern Mexico Flora of Guatemala Plants described in 1991 Taxa named by Antonio José Cavanilles {{cactus-stub