A new species, Billolivia cadamensis Q. D. Nguyen, N. L. Vu & H. T. Luu, sp. n. of the family Gesneriaceae is described from Quang Ngai Province, central Vietnam. The new taxon is close to B. tichii but differs in shorter stem, abaxially glabrous bracts, calyx divided into 5 lobes to base, outside pubescent apical half of corolla tube, oblong or deltoid corolla lobes, dense hairs on apical 3/4 of the ovary and white corolla lobes. A key to all already known species from Billolivia of Vietnam is given. | TAP CHI SINH cadamensis HOC 2016, (Gesneriaceae) 38(4): 492-496 Billolivia DOI: Billolivia cadamensis (Gesneriaceae), A NEW SPECIES FROM CENTRAL VIETNAM Nguyen Quoc Dat, Dinh Nhat Lam, Nguyen Hieu Cuong, Vu Ngoc Long, Luu Hong Truong* Southern Institute of Ecology, VAST, Vietnam ABSTRACT: A new species, Billolivia cadamensis Q. D. Nguyen, N. L. Vu & H. T. Luu, sp. n. of the family Gesneriaceae is described from Quang Ngai Province, central Vietnam. The new taxon is close to B. tichii but differs in shorter stem, abaxially glabrous bracts, calyx divided into 5 lobes to base, outside pubescent apical half of corolla tube, oblong or deltoid corolla lobes, dense hairs on apical 3/4 of the ovary and white corolla lobes. A key to all already known species from Billolivia of Vietnam is given. Keywords: Gesneriaceae, Billolivia, new species, Vietnam. Citation: Nguyen Quoc Dat, Dinh Nhat Lam, Nguyen Hieu Cuong, Vu Ngoc Long, Luu Hong Truong, 2016. Billolivia cadamensis (Gesneriaceae), a new species from central Vietnam. Tap chi Sinh hoc, 38(4): 492-496. DOI: . *Corresponding author: lhtruong@. Received 3 November 2016, accepted 20 December 2016 INTRODUCTION Billolivia is a genus of the Gesneriaceae established recently with five species, namely B. longipetiolata, B. minutiflora, B. poilanei, B. vietnamensis and B. violacea (Middleton et al., 2014a). In the same year, B. moelleri was described as the sixth taxon of the genus (Middleton et al., 2014b). Shortly later, two more new species, . Billolivia kyi and Billolivia tichii were discovered from the same Da Lat Plateau (Hong Truong Luu et al., 2015; Vũ Ngọc Long et al., 2015). Our continuous search for the genus in Vietnam has gathered several putative new taxa that are under examination. In this paper, we describe one of them as a new species from central Vietnam. MATERIALS AND METHODS The materials studied were collected from the type location .
