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Issue: Vol. 399 No. 3: 27 March 2019
Type: Article
Published: 2019-03-27
DOI: 10.11646/phytotaxa.399.3.6
Page range: 239–247
Abstract views: 29
PDF downloaded: 41

Impatiens damingensis (Balsaminaceae), a new species from Guangxi, China

School of Life Sciences, Southwest University, Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing 400715, China Institute of Botany, Chinese Academy of Science, State Key Laboratory of Systematic and Evolutionary Botany, Beijing 100093, China
College of Graduate Studies, Midwestern University, AZ 85308, USA College of Veterinary Medicine, Midwestern University, Glendale, AZ 85308, USA
Institute of Botany, Chinese Academy of Science, State Key Laboratory of Systematic and Evolutionary Botany, Beijing 100093, China University of Chinese Academy of Sciences, Beijing 100049, China
School of Life Sciences, Southwest University, Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing 400715, China
Institute of Botany, Chinese Academy of Science, State Key Laboratory of Systematic and Evolutionary Botany, Beijing 100093, China University of Chinese Academy of Sciences, Beijing 100049, China
Balsaminaceae Impatiens morphology new species phylogeny SEM Eudicots

Abstract

Impatiens damingensis S. X. Yu, C. Y. Xia & H. P. Deng, (Balsaminaceae) discovered in Guangxi, China, is described and illustrated here. This species is similar to I. aquatilis Hook.f., but differs from the latter by having blades that are ovate or ovate-lanceolate vs. lanceolate, ovate-lanceolate, or ovate-oblong; apices of bracts acute vs. glandular awned; apices of lateral sepals mucronulate vs. long mucronulate; and spur slender substraight or slightly incurved vs. incurved. Furthermore, molecular data as well as micro-morphological evidence under SEM (of pollens and seeds) also support the establishment of the new species.