Wang Jian-Sheng, Lu Yi-Fei, Xu Yue-Liang, Jin Shui-Hu, Jin Xiao-Feng
School of Forestry and Bio-Technology, Zhejiang Agricultural and Forestry University, Lin'an, 311300, Hangzhou, China.
College of Life Sciences, Zhejiang University, Hangzhou , 310058, China.
Bot Stud. 2020 Nov 2;61(1):29. doi: 10.1186/s40529-020-00306-1.
Southeast Asia, together with tropical Africa, Madagascar, South India and Sri Lanka, and the eastern Himalayas, are the five primary hotspots of species diversity of Impatiens (Balsaminaceae). China is also rich in Impatiens species, especially in the limestone karsts or 'Danxia' landforms. With zygomorphic flowers and diverse corolla morphology and color, the species in Impatiens are well-known for their ornamental use, but they are also notorious in taxonomy. During the preparation of revision of Impatiens in Zhejiang and adjacent regions, an unknown species was collected from Mt. Wuyi in Fujian Province, Southeast China.
Phylogenetic analyses based on nuclear ITS, chloroplast atpB-rbcL and trnL-F sequences, together with micromorphology of pollen grains and seed coats, strongly supported the close relationship of the new species with Impatiens platysepala Y.L.Chen and I. chloroxantha Y.L.Chen. In turn, both molecular data and morphological characters also were sufficient to distinguish the new species from the other two counterparts.
Our detailed morphological observations and molecular phylogenetic analyses support the recognition of Impatiens wuyiensis as a species new to science.
东南亚与热带非洲、马达加斯加、南印度和斯里兰卡以及东喜马拉雅地区是凤仙花属（凤仙花科）物种多样性的五个主要热点地区。中国的凤仙花属物种也很丰富，尤其是在石灰岩喀斯特地貌或“丹霞”地貌中。凤仙花属植物具有两侧对称的花以及多样的花冠形态和颜色，以其观赏价值而闻名，但在分类学上也很复杂。在编写浙江及邻近地区凤仙花属植物修订版的过程中，在中国东南部福建省的武夷山采集到了一个未知物种。
基于核ITS、叶绿体atpB-rbcL和trnL-F序列的系统发育分析，以及花粉粒和种皮的微观形态学研究，有力地支持了该新物种与宽萼凤仙花Y.L.陈和黄绿凤仙花Y.L.陈的密切关系。反过来，分子数据和形态特征也足以将该新物种与其他两个同类物种区分开来。
我们详细的形态学观察和分子系统发育分析支持将武夷凤仙花认定为一个新的科学物种。
