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Deamia
Genus of flowering plants From Wikipedia, the free encyclopedia
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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.
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Description
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
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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]
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Species
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
As of March 2021[update], Plants of the World Online still placed D. chontalensis in the genus Selenicereus.[1]
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References
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