Hoya pyrifolia (Apocynaceae), a new species from south-western Yunnan, China Author Huang, Er-Feng Guangxi Nanning Roy Garden Co. Ltd., Nanning 530227, Guangxi, China Author Yao, Gang https://orcid.org/0000-0003-3101-8230 College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China Author Jiang, Ri-Hong State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China & University of Chinese Academy of Sciences, Beijing 10049, China Author Yang, Lei-Lei Shenzhen Key Laboratory of Southern Subtropical Plant Diversity, Fairy Lake Botanical Garden, Shenzhen & Chinese Academy of Sciences, Shenzhen 518004, Guangdong, China Author Xi, Wang Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China Author Zhang, Zhong-Shuai State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, China Author Zhang, Xian-Chun State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China zhangxc@ibcas.ac.cn text PhytoKeys 2021 2021-02-02 174 95 106 http://dx.doi.org/10.3897/phytokeys.174.60137 journal article http://dx.doi.org/10.3897/phytokeys.174.60137 1314-2003-174-95 4240C3AF7E735D869DC6460B77ECD1A4

Table 1. Morphological comparison between Hoya pyrifolia E.F.Huang, its closest relatives and morphologically-similar species.

Taxa	Leaf	Inflorescence	Corona	Calyx lobes	Pollinia
H. chinghungensis	Ovate to broadly ovate, 10-13 mm x 7-10 mm; pubescent on both surfaces when young; base rounded to truncate, apex rounded to obtuse or acuminate; midvein evident on both surfaces	4-5-flowered; peduncle ca. 8 mm long	Rose-colored	1.5-2 mm long	Unknown
H. dickasoniana	Elliptic or ovate, 9-19 mm x 5-10 mm; glabrous; base broadly cuneate to rounded, apex obtuse; midvein evident on both surfaces	3-6-flowered peduncle ca. 5 mm long	Unknown	2-2.5 mm long	Oblong; ca. 1 mm long;
H. engleriana	Narrowly oblong, 20-25 mm x ca. 5 mm; pubescent on both surfaces when young; base cuneate, apex usually obtuse with mucro; midvein evident abaxially	5-7-flowered; peduncle ca. 6 mm	Rose-colored	1.5-2 mm long	Unknown
H. kingdonwardii	Elliptic to slightly elliptic-lanceolate, 10-17 mm x 5-10 mm; glabrous; base cuneate and apex acuminate; midvein evident on both surfaces	3-4-flowered; peduncle 7-10 mm long	Unknown	ca. 3 mm long	Oblong; ca. 0.8 mm long
H. lanceolata	Lanceolate, ca. 25 mm x 15 mm; based cuneate to narrowly cuneate, apex acuminate; sparsely pubescent on both surfaces when young; midvein evident on both surfaces;	7-12-flowered; peduncle ca. 12 mm	Rose-colored	Unknown	Unknown
H. longicalyx	Ovate-lanceolate, 15-20 mm x ca. 10 mm; base rounded, apex acuminate; slightly pubescent; midvein depressed adaxially, raised abaxially;	3-4-flowered; peduncle ca. 5 mm long	Whitish	5-7 mm long	Clavate; 0.55-0.6 mm long, narrowing towards the base;
H. pyrifolia	Pyriform, 10-14 mm x 4-7 mm; slightly pubescent adaxially, glabrous abaxially; base obtuse or rounded, apex rounded or truncate; midvein absent adaxially, obscure abaxially	4-flowered; peduncle 8-10 mm long	Rose-colored	ca. 4 mm long	Oblong; ca. 0.6 mm long