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Impatiens sterilis, a rare new species of Impatiens with reduced sterile inflorescences from Yunnan, China

摘要


Impatiens sterilis (Balsaminaceae), discovered in Yunnan, China, is described and illustrated here. It belongs to I. section Racemosae and is related to I. scutisepala. I. sterilis differs from the latter species in the shape of the leaf blades and the lower sepal, the number of lateral sepals, and producing some reduced sterile inflorescences at the end of anthesis. Detailed notes on morphology, key diagnostic characters, distribution, pollen and seed morphology, conservation status and color photographs are provided for the identification of the new species.

參考文獻


Lu Z-C, B. Pan, F.-Z. Huang, Y. Liu 2020. Impatiens gongchengensis (Balsaminaceae), a new species from Guangxi, Southern China. Taiwania. 65(1): 1‒4.
Song, Y., Y.-M. Yuan, and P. Kupfer. 2005. Seedcoat micromorphology of Impatiens (Balsaminaceae) from China. Bot. J. Linn. Soc. 149(2): 195–208.
Yu, S.-X., S.B. Janssens, X.-Y. Zhu, M. Liden, T.-G. Gao and W. Wang. 2016. Phylogeny of Impatiens (Balsaminaceae):integrating molecular and morphological evidence into a new classification. Cladistics 32(2): 179–197.
Yuan Y.-M., Y. Song, K. Geuten, E. Rahelivololona, S. Wohlhauser, E. Fischer, E. Smets, P. Küpfer. 2004. Phylogeny and biogeography of Balsaminaceae inferred from ITS sequences. Taxon 53(2): 391–403.
Zeng, L., Y.-N. Liu, R. Gogoi, L.-J. Zhang and S.-X. Yu. 2015. Impatiens tianlinensis (Balsaminaceae), a new species from Guangxi, China. Phytotaxa 227(3): 253–260.

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