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Home / Systematic Botany, Volume 45, Number 2

A New Species of Croton (Euphorbiaceae) from a Madagascan Lineage Discovered in Coastal Kenya

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Abstract—

Croton kinondoensis , a new species from Kenya, is described and illustrated here with photographs. It is found in the sacred Kaya Kinondo Forest, one of the last remaining coastal forests patches in Kenya. Its morphology and systematic position based on ITS and trnL-F DNA sequence data clearly place it within the Adenophorus Group of Croton, a clade of ca. 15 species otherwise known only from Madagascar and the Comoros Archipelago. Its closest affinities appear to lie with Croton mayottae, from the island of Mayotte, and C. menabeensis, from northwestern Madagascar. This new species likely represents an independent dispersal of Croton from Madagascar to mainland Africa.

Keywords: Croton kinondoensis; Kaya Kinondo Forest; endemic species; phylogenetic analysis

Document Type: Research Article

Affiliations: 1: 1CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, CN-430074, China; , [email protected], Email: [email protected] 2: 4East African Herbarium, National Museums of Kenya, P. O. Box 451660-0100, Nairobi, Kenya 3: 5University of Puerto Rico at Mayagüez Herbarium, Department of Biology, Universidad de Puerto Rico, Call Box 9000, Mayagüez, Puerto Rico 00680, USA;, Email: [email protected] 4: 6University of Michigan Herbarium, Department of Ecology and Evolutionary Biology, 3600 Varsity Drive, Ann Arbor, Michigan 48105, USA;, Email: [email protected]

Publication date: 13 May 2020

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