期刊
NORDIC JOURNAL OF BOTANY
卷 37, 期 8, 页码 -出版社
WILEY
DOI: 10.1111/njb.02422
关键词
Balsaminaceae; Impatiens; morphology; phylogeny; SEM; species nova
资金
- Special Funds for the Young Scholars of Taxonomy of the Chinese Academy of Sciences [ZSBR-004]
- National Natural Foundation of China [31170177, 31770235]
- Main Direction Program of Knowledge Innovation of Chinese Academy of Sciences [KSCX2-EW-Z-1]
Impatiens (Balsaminaceae) is a notoriously difficult genus to study for reasons that include small, remote and endemic areas of occurrence, and difficulty in obtaining well-dried herbarium specimens and separating and reconstructing floral parts from available dried specimens. Impatiens has also been notoriously difficult when it comes to phylogenetic resolution at the infrageneric level, but a new system with two subgenera (Impatiens and Clavicarpa) was recently proposed by Yu et al. and it has made it easier to classify newly discovered species. Impatiens maculifera, a new species of Balsaminaceae from Malipo County, Yunnan, China described here, is similar to I. parvisepala S.X. Yu & Y.T. Hou in having racemose inflorescences, four lateral sepals, clavate capsules and ellipsoid seeds, but differs in having leaves narrowly oval or with elliptic-lanceolate blades (versus obovate or obovate-lanceolate), obvious petioles (versus leaves subsessile), racemose inflorescence with 8-12 flowers (versus 6-8 flowers), flowers greenish yellow (versus yellow), lateral united petals and lower sepal with dense red spots (versus red spots absent), and dorsal petal with apparent stalk at base (versus unapparent stalk). Morphological characters and molecular phylogenetic analyses of DNA sequences from both nuclear ribosomal and plastid genes show that the new species differs distinctively from I. parvisepala. Furthermore, I. maculifera is distinguished from other Impatiens species based on morphological, micromorphological and palynological evidence, and molecular data.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据