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Hatiora Britton & Rose in L.H.Bailey, Standard Cycl. Hort.: 1432. 1915 sec. Korotkova & al. 2011
  • 1. later homonym


Compiled by Nadja Korotkova

Taxon standing

Category B. The genus is monophyletic based on phylogenetic studies that support the clade based on a sufficiently dense or even complete sampling, or support a monotypic genus as a distinct lineage, but do not provide a new taxonomic treatment at the species level. In many cases, older classical taxonomic synopses or a monographic treatment exist for these genera providing a reliable assessment of the species included.


Phylogenetics: The circumscription of Hatiora has been clarified recently. Hatiora including Rhipsalidopsis as adopted by Barthlott (1987), Barthlott & Hunt (1993), Barthlott & Taylor (1995), Hunt (2006) and Nyffeler & Eggli (2010) was found to be polyphyletic (Calvente & al. 2011a; Korotkova & al. 2011). Hatiora should therefore be restricted to species with cylindrical stems, terete pericarpels, and small yellow-orange or magenta flowers, corresponding to Hatiora in the traditional sense. Accordingly, Rhipsalidopsis in its traditional circumscription should again be accepted at generic rank.A

Descriptions (aggregated)

Stem width: 0.30.5 cm; stem shape: cylindric [4] entire plant habitat: epiphytic [3], terrestrial [2], epilithic [1]; entire plant orientation: semierect [3], semiclimbing [1]; entire plant branching: acrotonic [4]; entire plant pubescence: glabrous [4] flower quantity per areol contemporaneously: 1; flower coloration: yellow [1], pink [1], orange [1]; flower architecture: actinomorphic [3]; flower position: apical [3]; flower size qualitativ: minute [3] areole prominence: superficial [3] fruit coloration: pale pink [1], greenish [1]; fruit shape: subglobose [2] bud orientation: oblique [3]
A single or the first number in square brackets denotes sample size


A. Hernández-Ledesma, P., Berendsohn, W. G., Borsch, T., von Mering, S., Akhani, H., Arias, S., Castañeda-Noa, I., Eggli, U., Eriksson, R., Flores-Olvera, H., Fuentes-Bazán, S., Kadereit, G., Klak, C., Korotkova, N., Nyffeler, R., Ocampo, G. & Ochoterena, H. 2015: A taxonomic backbone for the global synthesis of species diversity in the angiosperm order Caryophyllales. – Willdenowia 45(3): 281-383