Begonia polyclada (sect. Petermannia, Begoniaceae), a gracile new species from Luzon, Philippines

CHING-I PENG; ROSARIO RIVERA RUBITE; CHE-WEI LIN

doi:10.11646/phytotaxa.296.1.8

Issue: Vol. 296 No. 1: 14 February 2017

Type: Article

Published: 2017-02-14

DOI: 10.11646/phytotaxa.296.1.8

Page range: 93–97

Abstract views: 20

PDF downloaded: 1

Begonia polyclada (sect. Petermannia, Begoniaceae), a gracile new species from Luzon, Philippines

CHING-I PENG⁺⁻
ROSARIO RIVERA RUBITE⁺⁻
CHE-WEI LIN⁺⁻

Herbarium (HAST), Biodiversity Research Center, Academia Sinica, Nangang, Taipei 115, Taiwan

University of the Philippines Manila, Department of Biology, College of Arts and Sciences, Padre Faura, Manila, Philippines

ivision of Botanical Garden, Taiwan Forestry Research Institute, No. 53, Nanhai Road, Taipei 100, Taiwan

Begonia polyclada new species Philippines sect. Petermannia

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Abstract

Begonia polyclada, a new species of sect. Petermannia from Luzon, Philippines is here described and illustrated. The new species is apparently allied to a group of Begonia in the Philippines with axillary inflorescences and numerous, relatively small-sized sub-symmetric, ovate to lanceolate-ovate leaves, i.e. B. aequata A. Gray (1854: 658), B. binuangensis Merr. (1918: 40), B. edanoi Merr. (1918: 314), B. gracilipes Merr. (1912: 405), B. lagunensis Elmer (1910: 735), B. sarmentosa L.B. Sm. & Wassh. (1983: 443) and B. wenzelii Merr. (1915: 277). However, a combination of characters such as the much smaller, nearly sessile leaves, tomentose stem, petiole and leaf abaxial surface, and an erect habit readily distinguish the new species from them.