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Type: Article
Published: 2015-03-12
Page range: 155–160
Abstract views: 25
PDF downloaded: 1

Two new species of Ixora (Ixoroideae, Rubiaceae) endemic to the Philippines

College of Science, University of Santo Tomas, España, Manila, 1015 Philippines Research Center for the Natural & Applied Sciences, University of Santo Tomas, España, Manila, 1015 Philippines Department of Plant Systematics, Bayreuth University, D–95440 Bayreuth, Germany
Philippine National Herbarium, National Museum, Padre Burgos, Manila, Philippines
Department of Plant Systematics, Bayreuth University, D–95440 Bayreuth, Germany
Department of Plant Systematics, Bayreuth University, D–95440 Bayreuth, Germany
Ixora Ixora alejandroii Ixora reynaldoii Philippines Rubiaceae

Abstract

Two new species of Ixora are described from the provinces of Palawan and Samar, Philippines: I. alejandroi and I. reynaldoi. The two new species are compared mostly with other species of the genus from the Philippines and neighbouring Asian countries. Ixora alejandroi is characterized by its elongated cyme with congested secondary axes, reddish-brown corolla, stigmatic lobes shortly cleft in the middle, round at tip; while I. reynaldoi is easily recognised by its pseudanthium-type, 9–15 flowered inflorescences, long bracteoles (3.5–8 mm long), and keeled, foliaceous calyx lobes (8–10 mm long). The conservation status of each species is proposed, using IUCN Criteria.