台灣膜蕨科新紀錄植物——指裂細口團扇蕨

Microtrichomanes digitatum (Sw.) Copel. (Hymenophyllaceae), a New Record from Taiwan

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。

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.