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Article
Published: 2020-07-23

Two new species of Artocarpus (Moraceae) from Thailand and Vietnam

The Morton Arboretum, 4100 IL-53, Lisle, Illinois 60532, USA Singapore Botanic Gardens, National Parks Board, 1 Cluny Road, 259569, Singapore Case Western Reserve University, Department of Biology, 2080 Adelbert Road, Cleveland, Ohio 44106, USA
Department of Biology, Faculty of Science, Khon Kaen University, Thailand
Faculty of Law, Khon Kaen University, Thailand
Northwestern University, Program in Plant Biology and Conservation, Hogan Hall, 2205 Tech Drive, Evanston, Illinois 60028, USA Chicago Botanic Garden, Negaunee Institute for Plant Conservation Science and Action, 1000 Lake Cook Road, Glencoe, IL, 60022, USA
Eudicots Moraceae Artocarpus Thailand Vietnam crop wild relatives

Abstract

Recent taxonomic work on Artoarpus has revealed two undescribed species from Thailand and Vietnam. Artocarpus rubrosoccatus, endemic to peninsular Thailand, resembles A. lacucha but is distinguished by its deep red clavate staminate inflorescences. Artocarpus montanus is found in the montane regions of southern and central Vietnam, and perhaps also in Thailand. This species resembles the vegetative parts of A. lowii and A. excelsus, but A. montanus differs in its longer syncarp processes and its geographic distribution. The vast majority of Artocarpus species are found in tropical lowlands, and A. montanus, along with A. excelsus, represent the only known members of the genus that are restricted to montane habitats. The provisional conservation assessment of both new species is Near Threatened, because although their known areas of occupancy are restricted, both occur in protected areas.

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