Abstract

Hymenorchis phitamii – new species for science discovered in southern Vietnam described and illustrated. From most closely related H. javanica it differs in emarginate orbicular lip and nearly straight (or hardly serrulate) tepals and leaves. The first record of the genus Hymenorchis in mainland Asia represents new remarkable addition to the orchid flora of Vietnam, as well as floras of Indochina and mainland Asia.

中文摘要

本文發表了在越南發現的蘭科新種Hymenorchis phitamii。與近似物種H. javanica相 較，本種的唇瓣尖端凹陷、花被片和葉片邊緣呈細鋸齒狀，這也是首次在亞洲大陸發現 Hymenorchis屬的分布，也為越南植物誌、中印半島及亞洲大陸增添一筆引人注目的發現。

Keyword: Flora of Vietnam, Hymenorchis phitamii, new orchid species, plant diversity, taxonomy.