Disocactus speciosus

{{Short description|Species of plant in the genus Disocactus}}

{{Speciesbox

|image=Disocactus speciosus1MTFL.jpg

|image_caption=Flowers in various stages of maturation

|image2=Disocactus speciosus (Cereus speciosus) 1.27.jpg

|image2_caption=Botanical illustration

|status = LC

|status_system = IUCN3.1

|status_ref = {{cite iucn |author= Arreola, H. |author2= Ishiki, M. |author3= Terrazas, T. |date=2017 |title= Disocactus speciosus |volume=2017 |page= e.T151970A121452011 |doi= 10.2305/IUCN.UK.2017-3.RLTS.T151970A121452011.en |access-date=25 November 2022}}

|genus=Disocactus

|species=speciosus

|authority=(Cav.) Barthlott

|synonyms_ref=

|synonyms={{Collapsible 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.{{cite web |url=http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:963216-1 |title=Disocactus speciosus (Cav.) Barthlott |author= |website=Plants of the World Online |publisher=Board of Trustees of the Royal Botanic Gardens, Kew |access-date=6 July 2021 }} As its synonym Heliocereus speciosus it has gained the Royal Horticultural Society's Award of Garden Merit.{{cite web |title=Heliocereus speciosus sun cactus |url=https://www.rhs.org.uk/Plants/106146/Heliocereus-speciosus/Details |date=2021 |publisher=The Royal Horticultural Society |access-date=6 July 2021 }}