Viola umphangensis S. Nansai, Srisanga & Suwanph., a new species from Thailand, is described and illustrated. Morphological, anatomical and palynological characters of V. umphangensis are compared with a similar species, V. betonicifolia Sm. An amended key to the Viola species in the Flora of Thailand account is provided.

中文翻译：

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Viola umphangensis（紫罗兰科），泰国新种

Viola umphangensis S. Nansai, Srisanga & Suwanph.，来自泰国的一个新物种，被描述和说明。将 V. umphangensis 的形态学、解剖学和孢粉学特征与类似物种 V. betonicifolia Sm 进行比较。提供了泰国植物群帐户中中提琴物种的修正密钥。