Sunday, September 17, 2017

[Botany • 2017] Impatiens casseabriae & I. putaoensis • Two New Species of Impatiens (Balsaminaceae) from Putao, Kachin State, northern Myanmar


Impatiens putaoensis


Abstract

Two new species of the genus Impatiens (Balsaminaceae) from Putao, Kachin State, Myanmar, are here described and illustrated. Impatiens casseabriae can be easily recognized by its narrowly elliptic to narrowly oblanceolate leaves, petioles up to 3 mm long, lower lateral united petals 25–40 mm long. Impatiens putaoensis differs from its closely related species I. xanthina in having light greenish yellow flowers, lateral sepals ovate to elliptic, lower lobe of united petals semilunar, upper lobe of united petals dolabrate, dorsal petal ovate to nearly orbicular, with a narrow inconspicuous dorsal crest. Molecular phylogenetic analyses of sequences from both nuclear ribosomal and plastidgenes confirm that the two new species are distinct from previously recorded species.

Keywords: phylogeny, botanical expeditions, diversity, CAS-SEABRI, Eudicots



Impatiens casseabriae. A-D. Habit; E. Different parts of the flower and capsule; F. Flower (front view).
Images by TAN Yunhong. 

 Impatiens putaoensis. G, H. Habit; I. Different parts of the flower, pedicel with immature capsule and pedicel with flower (lateral view). 
Images by TAN Yunhong.

Impatiens casseabriae. A-D. Habit; E. Different parts of the flower and capsule; F. Flower (front view).
Impatiens putaoensis. G, H. Habit; I. Different parts of the flower, pedicel with immature capsule and pedicel with flower (lateral view). (Images by TAN Yunhong) 


Bin Yang, Shi-Shun Zhou, Kyaw Win Maung and Yun-Hong Tan. 2017. Two New Species of Impatiens (Balsaminaceae) from Putao, Kachin State, northern Myanmar. Phytotaxa. 321(1); 103–113.  DOI:  10.11646/phytotaxa.321.1.4

Two New Species of Balsaminaceae Reported from Northeern Myanmar
english.CAS.cn/newsroom/research_news/201709/t20170914_183100.shtml

   

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