Two new species of Impatiens (Balsaminaceae) from Putao, Kachin State, northern Myanmar

BIN YANG1,2, SHI-SHUN ZHOU2, KYAW WIN MAUNG& YUN-HONG TAN1,2*

1  Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin, Nay Pyi Taw 05282, Myanmar

2  Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan 666303, P.R. China

3  Forest Research Institute, Forest Department Ministry of Environmental Conservation and Forestry, Yezin, Nay Pyi Taw, 05282, Myanmar

*  Author for correspondence. E-mail:tyh@xtbg.org.cn

PubYear : 2017

Volume : 321 (1):

Publication Name: Phytotaxa

Page number :103–113

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. Molecularphylogenetic analyses of sequences from both nuclear ribosomal and plastidgenes confirm that the two new species are distinct from previously recorded species.

Keyword: phylogeny, botanical expeditions, diversity, CAS-SEABRI

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