A new species (Begonia giganticaulis) of Begoniaceae from southern Xizang (Tibet) of China

被引：7
作者：
Tian, Dai-Ke
Wang, Wen-Guang
Dong, Li-Na
Xiao, Yan
Zheng, Min-Min
Ge, Bin-Jie
机构：
来源：
PHYTOKEYS | 2021年 / 187期
基金：
中国国家自然科学基金;
关键词：
Conservation status; molecular evidence; morphology; southern Tibet; taxonomy; ASIAN BEGONIA; PLATYCENTRUM; HOMOPLASY;
D O I：
10.3897/phytokeys.187.75854
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Begonia giganticaulis, a huge new species in Begonia sect. Platycentrum of Begoniaceae from southern Xizang (Tibet) of China, is described. Morphologically, it is mostly similar to B. longifolia and B. acetosella, but clearly differs from the former mainly by its dioecious and taller plants, sparse hairs on abaxial veins, longer inflorescence, unique shape of fruits, and differs from the latter mainly by its late and longer flowering time, 6-tepals of female flower and 3-loculed ovary. The phylogenetic analyses also support the separation of the new species from other taxa. Based on the current data, its conservation status is assigned to Endangered (B2a) according to the IUCN Red List Categories and Criteria.
引用
收藏
页码：189 / 205
页数：17
相关论文
共 53 条
[1]  
Blume C. L, 1827, ENUMERATIO PLANTARUM, V1
[2]   A new Begonia species from Arunachal Pradesh, and some notes on Begonia scintillans [J].
Borah, Dipankar ;
Taram, Momang ;
Wahlsteen, Eric .
TAIWANIA, 2021, 66 (04) :450-454
[3]  
Borah Dipankar, 2021, Biodiversity: Research and Conservation, V61, P29, DOI 10.2478/biorc-2021-0002
[4]   A revision and one new species of Begonia L. (Begoniaceae, Cucurbitales) in Northeast India [J].
Camfield, Rebecca ;
Hughes, Mark .
EUROPEAN JOURNAL OF TAXONOMY, 2018, 396 :1-116
[5]   A new berry-fruited species of Begonia (Begoniaceae) from Xizang (Tibet) in China [J].
Chen, Wen-Hong ;
Guo, Shi-Wei ;
Radbouchoom, Sirilak ;
Dong, Wen-Ke ;
Wang, Zhong-Xuan ;
Xi, Hui-Hui ;
Shui, Yu-Min .
PHYTOTAXA, 2019, 407 (01) :29-35
[6]   Phylogenetic analyses of Begonia sect. Coelocentrum and allied limestone species of China shed light on the evolution of Sino-Vietnamese karst flora [J].
Chung, Kuo-Fang ;
Leong, Wai-Chao ;
Rubite, Rosario Rivera ;
Repin, Rimi ;
Kiew, Ruth ;
Liu, Yan ;
Peng, Ching-I .
BOTANICAL STUDIES, 2014, 55
[7]  
Clarke C B., 1879, Flora of British India, V2, P635
[8]   Phylogenetic position and biogeography of Hillebrandia sandwicensis (Begoniaceae):: A rare Hawaiian relict [J].
Clement, WL ;
Tebbitt, MC ;
Forrest, LL ;
Blair, JE ;
Brouillet, L ;
Eriksson, T ;
Swensen, SM .
AMERICAN JOURNAL OF BOTANY, 2004, 91 (06) :905-917
[9]  
Craib W. G, 1912, B MISCELLANEOUS INFO, V3, P144, DOI [10.5962/bhl.title.21865, DOI 10.2307/4104569, DOI 10.5962/BHL.TITLE.21865]
[10]  
de Candolle A.L.P.P., 1864, Prodromus systematis naturalis regni vegetabilis, V15, P266, DOI DOI 10.1007/S12225-012-9428-7
123456