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Issue: Vol. 455 No. 3: 12 August 2020
Type: Article
Published: 2020-08-12
DOI: 10.11646/phytotaxa.455.3.2
Page range: 196–204
Abstract views: 34
PDF downloaded: 1

Begonia beijnenii (Begoniaceae, section Baryandra), a new species of Begonia from San Vicente, Palawan, the Philippines

Philippine Taxonomic Initiative, Inc, Botanica Building, El Nido, Palawan, 5313 Philippines.
Biodiversity Program, Taiwan International Graduate Program, Academia Sinica and National Taiwan Normal University, Taipei, 11529, Taiwan. Philippine National Herbarium, Botany and National Herbarium Division, National Museum of Natural History, T.M. Kalaw St., Manila.
Department of Biology, College of Arts and Sciences, University of the Philippines Manila, Padre Faura Street, Ermita, Metro Manila 1000, Philippines.
Philippine Taxonomic Initiative, Inc, Botanica Building, El Nido, Palawan, 5313 Philippines.
Begonia cleopatrae Begonia gironellae Begonia hughesii endemic Eudicots Malesia taxonomy

Abstract

In our study, a distinctive new species of Begonia from an unexplored region of Port Barton, San Vicente, Palawan, B. beijnenii, is described and illustrated. The new species belongs to section Baryandra. It is morphologically most similar to  B. hughesii, in having a 3-winged ovary with a cucullate wing and an abortive abaxial locule, tomentose petioles, and leaves that are adaxially glabrous and abaxially subglabrous. However, B. beijnenii distinctly differs by being comparatively smaller in size. It is only known from its type locality and vicinity. Comparisons with two variegated species of Palawan: B. cleopatrae and B. gironellae are also provided to aid in identification. B. beijnenii is hereby proposed to be Vulnerable (VU) D1, based on guidelines by IUCN.