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Published on: November 6, 2014
Xanthophytumantoanense (Rubiaceae, Ophiorrhizeae), a new species from Vietnam
Hieu Cuong Nguyen1, Xuan Bach Nguyen-Le1, Quoc Dat Nguyen1
1Southern Institute of Ecology, Institute of Applied Materials Science, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam Institute of Applied Materials Science, Vietnam Academy of Science and Technology Ho Chi Minh Vietnam.
Abstract:
Xanthophytumantoanense is described as a new species endemic to Central Vietnam. It is morphologically closest to X.capitatum in having setose hairs on the abaxial leaf surface and a pedunculate head-like inflorescence but differs from the latter by a number of characteristics: shorter stem, 3-lobed stipules, narrowly lanceolate leaf blades with a cuneate-oblique base and 20-22 pairs of secondary veins, 3.5-4.5 cm long peduncle, spatulate calyx lobes, larger corollas with a 5-5.4 mm long tube and 2.4-3 mm long lobes, and an apically hairy style. A detailed description, an illustration, and information on distribution, ecology and phenology, and a provisional assessment of the conservation status of the new species are provided.
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