Open AccessA new and endemic species of Drosera (Droseraceae) from Madagascar
Author(s) -
Andreas Fleischmann,
Nivo Rakotoarivelo,
Aymeric Roccia,
Paulo Minatel Gonella,
Lala Roger Andriamiarisoa,
Aina Razanatsima,
Fortunat Rakotoarivony
Publication year - 2020
Publication title -
plant ecology and evolution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.422
H-Index - 23
eISSN - 2032-3921
pISSN - 2032-3913
DOI - 10.5091/plecevo.2020.1705
Subject(s) - herbarium , biology , botany , iucn red list , key (lock) , ecology
Background and aims – This study is part of an ongoing revision of the world Drosera species. During herbarium revisions of Drosera from Madagascar, a new species was identified and is here described.Methods – The species’ morphology is described based on herbarium studies and observation of living plants in situ, and ecological notes from field observations are provided. The species is compared and contextualized within the current subgeneric classification of Drosera.Key results – The new species, Drosera arachnoides, is recognized as most closely related to another Malagasy-endemic, D. humbertii, from which it is morphologically and ecologically distinct. The new species is placed within D. subg. Drosera sect. Ptycnostigma. Based on the restricted occurrence, the species is assessed as Vulnerable, following IUCN categories and criteria. A key to the Drosera species from Madagascar is provided.Conclusion – Drosera arachnoides is the second endemic Drosera species in Madagascar and raises the total number of species on the island to six.