Deamia
| Deamia | |
|---|---|
| File:Strophocactus testudo13UE.jpg | |
| Deamia testudo | |
| Scientific classification Error creating thumbnail: | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Tribe: | Echinocereeae |
| Genus: | Deamia Britton & Rose[1] |
| Species | |
Deamia is a genus of cacti. Its species are native from south Mexico through Central America to Nicaragua. Its species have been placed in Selenicereus and Strophocactus.
Description
[edit | edit source]Species of Deamia are climbing or pendent shrubs. Their flowers have hairs and spines and are followed by red fruit with clear pulp.[2]
Taxonomy
[edit | edit source]The genus was erected by Nathaniel Lord Britton and Joseph Nelson Rose in 1920,[3] with the single species Deamia testudo. The name honours Charles C. Deam, a plant collector who sent the plant to Britton and Rose.[4] It was treated as a distinct monotypic genus until 1965, when Franz Buxbaum merged it into Selenicereus. Alexander Doweld revived the genus in 2002, adding the species then treated as Selenicereus chontalensis.[2] Molecular phylogenetic studies in 2017 (based on the two species then known) and in 2018 (three species) confirmed the monophyly of the genus.[2][5] It was placed in the tribe Echinocereeae, subtribe Pachycereinae.[5] It was one of the early diverging members of the tribe in the cladograms obtained in the 2018 study, with the species related as follows:[5]
| Deamia |
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Species
[edit | edit source]Two species were accepted in a 2017 study of the tribe Hylocereeae which revived the genus Deamia.[2] A third species was described in 2018.[5] A new species Deamia funis was discovered in 2022
| Image | Scientific name | Distribution |
|---|---|---|
| Deamia chontalensis (Alexander) Doweld | southwestern Mexico and Guatemala | |
| Deamia funisHammel & S.Arias | Nicaragua | |
| Deamia montalvoae Cerén, J.Menjívar & S.Arias | southeastern Mexico, Guatemala and El Salvador. | |
| File:Strophocactus testudo13UE adj.jpg | Deamia testudo (Karwinsky ex Zuccarini) Britton & Rose | southern Mexico through Central America to Nicaragua. |
As of March 2021[update], Plants of the World Online still placed D. chontalensis in the genus Selenicereus.[1]
References
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