A new occurrence species Didissandra C. B. Clarke (Gesneriaceae Dumort) of the flora of Vietnam

Phuong, Vu Xuan; Xuyến, Đỗ Thị

doi:10.15625/0866-7160/v32n2.688

Cited by 1 publication

(1 citation statement)

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“…The genus Raphiocarpus Chun (1946) from Gesneriaceae family includes about 16 species, distributed from southwest China (Weber et al 1998, 2020 ; Li and Wang 2005 ; Wei et al 2010 ; Zhang et al 2010 ; Chen et al 2015 ; Wei 2018 ; Wei et al 2022 ) to central Vietnam (Pham 2000; Phuong 2005 ; Phuong and Xuyen 2010 ; Phuong et al 2012 ; Luu et al 2018 ; Vu 2018 ; Middleton et al 2021 ; Hassler 2022 ; Powo 2022 ; Xin et al 2022 ). There are presently ten species of Raphiocarpus found and described in Vietnam, namely R. annamensis (Pellegr.)…”

Section: Introductionmentioning

confidence: 99%

Raphiocarpus taygiangensis (Gesneriaceae), a new species from central Vietnam

Nguyen

Phung

Nguyen

et al. 2023

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Raphiocarpus taygiangensis, a new species of Gesneriaceae family discovered in Tay Giang District, Quang Nam Province, Central Vietnam, is here described and illustrated. The new species is diagnosed by the combination of its stem up to 2 m long, sericeous hairs on young stem, leaf petiole and adaxial mid-vein, sparsely and minutely serrate leaf margin, axillary inflorescence spreading along stem, sparsely long gland-tipped hairs on peduncle, pedicel, calyx, outside corolla and pistil, calyx 5-disparted from base, purplish white flower with purple stripes inside corolla tube, and dish-shaped stigma formed by 2 semi-orbicular lobes horizontally expanding. Distinct features of the new species and its morphologically closest congener, Rhaphiocarpus axillaris, are compared and discussed. The conservation status of the described species is estimated as Vulnerable (VU D2) according to the IUCN Red List Criteria.

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