Taxonomic revision of Jumellea (Orchidaceae, Angraecinae) in the Mascarenes

THIERRY PAILLER; FANNY PATRICKA RAKOTOARIVELO; SYLVAIN G. RAZAFIMANDIMBISON; BENNY BYTEBIER; F. B. VINCENT FLORENS; FLORENT MARTOS; CLÁUDIA BAIDER

doi:10.11646/phytotaxa.477.1.1

Issue: Vol. 477 No. 1: 22 December 2020

Type: Article

Published: 2020-12-22

DOI: 10.11646/phytotaxa.477.1.1

Page range: 1–34

Abstract views: 107

PDF downloaded: 1

**Taxonomic revision of Jumellea (Orchidaceae, Angraecinae) in the Mascarenes**

THIERRY PAILLER⁺⁻
FANNY PATRICKA RAKOTOARIVELO⁺⁻
SYLVAIN G. RAZAFIMANDIMBISON⁺⁻
BENNY BYTEBIER⁺⁻
F. B. VINCENT FLORENS⁺⁻
FLORENT MARTOS⁺⁻
CLÁUDIA BAIDER⁺⁻

Université de La Réunion, UMR C53 Cirad-Université, Peuplements Végétaux et Bioaggresseurs en Milieu Tropical, Saint-Denis Messag, Cedex 9, La Réunion, France

Université de La Réunion, UMR C53 Cirad-Université, Peuplements Végétaux et Bioaggresseurs en Milieu Tropical, Saint-Denis Messag, Cedex 9, La Réunion, France Université d’Antananarivo, Faculté des Sciences, Mention Biologie et Ecologie Végétales, Ankatso, Antananarivo, Madagascar

Department of Botany, Swedish Museum of Natural History, Box 50007, SE-10405 Stockholm, Sweden

Bews Herbarium, Centre for Functional Biodiversity, School of Life Sciences, University of KwaZulu-Natal, Private Bag X01, 3209 Scottsville, South Africa

Tropical Island Biodiversity, Ecology and Conservation Pole of Research, Faculty of Science, University of Mauritius, Réduit, 80837, Mauritius

Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, CP 39, 57 rue Cuvier, 75005, Paris, France

The Mauritius Herbarium, R.E. Vaughan Building, Agricultural Services, Ministry of Agro-Industry and Food Security, Réduit, 80835, Mauritius

Monocots Angraecoid orchids flora of the Mascarenes Mascarene flora Mauritius Réunion Rodrigues

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Abstract

We present a taxonomic revision of the genus Jumellea (Angraecinae; Orchidaceae) in the Mascarenes based on morphological study and field observations. We examined 328 specimens mostly from the MAU, P and REU, and recognise nine species. We provide a key, morphological descriptions, distributions, habitats, phenologies and conservation assessments following the Red List categories and criteria (IUCN). All nine species are present on Réunion with two being endemic there, and five have been confirmed on Mauritius, none of them endemic. The single species recorded for Rodrigues is also the only one found on all three islands of the Mascarenes and Madagascar. Five species are endemic to the Mascarene Archipelago, whereas the other four also occur in Madagascar. All nine species qualify as threatened with extinction on at least one of the islands of the Mascarenes. Two species are probably extinct on one island, and only two species on Réunion are not threatened.

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