Abstract

Microtrichomanes digitatum (Sw.) Copel., a filmy fern species, was discovered in the southern Taiwan during the botanical inventory of past decade. It represents a new record for the fern flora of Taiwan. Microtrichomanes digitatum can be distinguished from its congener, M. nitidulum (v. d. Bosch) Copel., in bearing short, stiff, simple, and dark-brown setae on the leaf margins. The present study provides taxonomic description, photographs, and a distribution map. The problems of taxonomy, ecology, conservation, distribution and phytogeography are also discussed.

中文摘要

在過去十年的植物探查中，筆者在南台灣發現一膜蕨科新紀錄植物－指裂細口團扇 蕨(Microtrichomanes digitatum (Sw.) Copel.)，本種與台灣產同屬另一種－細口團扇蕨(M. nitidulum (v. d. Bosch) Copel.)之主要區別點為葉緣具深褐色硬毛。本文除提供分類描述、照片與分布圖外，也針對其生態、保育、分布與植物地理等方面進行討論。

Keyword: Conservation, Filmy fern, Hymenophyllaceae, Microtrichomanes digitatum, New record, Rare plant, Taiwan, Taxonomy, Trichomanes digitatum