台灣植物誌之觀察（26）──細枝水合歡（豆科）

Notes on the Flora of Taiwan (26)－Neptunia gracilis Benth. (Leguminosae)

細枝水合歡（Neptunia gracilis Benth.）分布於澳洲及菲律賓，首次在台灣鵝鑾鼻一帶珊瑚礁海岸之草地採到。本文提供植物圖以利辨識，並提供花粉形態，供為本種之基本資料。本種為台灣之新紀錄屬及新紀錄種。

Specimens of Neptunia gracilis Benth. was collected from Taiwan for the first time on open grassland near coral reef at the southern tip of Taiwan. A description and a line drawing are presented. Its pollen features are also provided. They are monadiform, 3-colporate with striate ornamentation, which are consistent within the genus Neptunia.