Disocactus speciosus

Disocactus speciosus
Flowers in various stages of maturation
Botanical illustration
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Caryophyllales
Family:	Cactaceae
Subfamily:	Cactoideae
Genus:	Disocactus
Species:	D. speciosus
Binomial name
Disocactus speciosus (Cav.) Barthlott
Synonyms[2]
List Cactus speciosissimus Desf. Cactus speciosus Cav. Cereus amecamensis Heese Cereus coccineus DC. Cereus coccineus Salm-Dyck ex Pfeiff. & Otto Cereus elegantissimus A.Berger Cereus formosus J.Forbes Cereus formosus Monv. Cereus hybridus Otto Cereus jenkinsonii Sweet Cereus schrankii Zucc. ex Seitz Cereus serratus Weing. Cereus speciosissimus (Desf.) Sweet Cereus speciosus (Cav.) Sweet Cereus speciosus var. amecamensis (Heese) A.Berger Cereus speciosus var. coccineus K.Schum. Cereus superbus C.Ehrenb. Disocactus aurantiacus var. blomianus (Kimnach) E.Meier Disocactus cinnabarinus (Eichlam ex Weing.) Barthlott Disocactus schrankii (Zucc. ex Seitz) Barthlott Disocactus speciosus f. amecamensis (Heese) Barthlott Epiphyllum speciosum (Cav.) Haw. Heliocereus amecaensis (Heese) Britton & Rose Heliocereus aurantiacus var. blomianus Kimnach Heliocereus cinnabarinus (Eichlam ex Weing.) Britton & Rose Heliocereus coccineus Britton & Rose Heliocereus coccineus (DC.) Scheinvar Heliocereus elegantissimus Britton & Rose Heliocereus elegantissimus var. helenae Scheinvar Heliocereus elegantissimus var. stenopetalus Bravo ex S.Arias, U.Guzmán & Gama Heliocereus heterodoxus Standl. & Steyerm. Heliocereus luzmariae Scheinvar Heliocereus schrankii (Zucc. ex Seitz) Britton & Rose Heliocereus schrankii var. elegantissimus (Britton & Rose) Backeb. Heliocereus schrankii subsp. helenae (Scheinvar) Doweld Heliocereus schrankii var. helenae (Scheinvar) Kimnach Heliocereus schrankii subsp. luzmariae (Scheinvar) U.Guzmán Heliocereus schrankii subsp. stenopetalus (Bravo ex S.Arias, U.Guzmán & Gama) Doweld Heliocereus schrankii var. stenopetalus (Bravo ex S.Arias, U.Guzmán & Gama) Kimnach Heliocereus serratus (Weing.) F.M.Knuth Heliocereus speciosissimus (Desf.) Y.Itô Heliocereus speciosus (Cav.) Britton & Rose Heliocereus speciosus var. amecamensis (Heese) Bravo Heliocereus speciosus subsp. amecamensis (Heese) Doweld Heliocereus speciosus var. serratus (Weing.) Backeb. Heliocereus speciosus var. superbus (Ehrenb.) Backeb. Heliocereus superbus (C.Ehrenb.) A.Berger Mediocactus coccineus (DC.) Britton & Rose × Phyllocereus cinnabarinus (Eichlam) Knebel

Disocactus speciosus, the sun cactus, is a species of flowering plant in the family Cactaceae. It is native to Mexico, Honduras and Guatemala, and has been introduced to the Canary Islands.^[2] As its synonym Heliocereus speciosus it has gained the Royal Horticultural Society's Award of Garden Merit.^[3]

The following subspecies are accepted:^[2]

• Disocactus speciosus subsp. blomianus (Kimnach) Ralf Bauer – Chiapas
• 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