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Issue: Vol. 716 No. 1: 26 Aug. 2025
Type: Article
Published: 2025-08-26
DOI: 10.11646/phytotaxa.716.1.6
Page range: 55-64
Abstract views: 549
PDF downloaded: 15

A new tribal classification of Crassulaceae subfam. Cotyledonoideae: separating Kalanchoe from Adromischus, Cotyledon, and Tylecodon

Ria Olivier Herbarium, Department of Botany, Nelson Mandela University, P.O. Box 77000, Gqeberha, 6031 South Africa
Australian National Herbarium, Centre for Australian National Biodiversity Research (a joint venture between Parks Australia and CSIRO), GPO Box 1700, Canberra ACT 2601, Australia
nomenclature subfamily taxonomy tribe Eudicots

Abstract

In 2024 finality was reached regarding Crassulaceae subfam. Cotyledonoideae being the subfamily name that must be used, instead of Crassulaceae subfam. Kalanchooideae, for a group of four predominantly, but not exclusively, southern African genera, i.e., Adromischus, Cotyledon, Kalanchoe, and Tylecodon. A conclusion having been reached on this nomenclatural matter facilitates a reassessment of the infrasubfamilial classification of Crassulaceae subfam. Cotyledonoideae as it was amended in 2024. The four genera are here formally split across two tribes, i.e., the pentamerous-flowered, deciduous or evergreen Crassulaceae [subfam. Cotyledonoideae] tr. Cotyledoneae (Adromischus, Cotyledon, and Tylecodon) and the tetramerous-flowered, evergreen Crassulaceae [subfam. Cotyledonoideae] tr. Kalanchoeae (Kalanchoe). These two tribal names were validly published 196 and 92 years ago, respectively. The circumscriptions of both tribes, as originally conceived, are substantially amended.

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How to Cite

Smith, G.F. & Monro, A.M. (2025) A new tribal classification of Crassulaceae subfam. Cotyledonoideae: separating Kalanchoe from Adromischus, Cotyledon, and Tylecodon. Phytotaxa 716 (1): 55–64. https://doi.org/10.11646/phytotaxa.716.1.6