蘭嶼島位於臺灣東南方62公里的太平洋海域上面積僅45.7平方公里，由於屬典型的熱帶海島， 其菌蕈種類逾異於臺灣本島，本篇報吿描述十種菇蕈。分別是：Anellaria sepuchralis (Berk.) Sing” Chlorophyllum molybdites (Meyer: Fn) Mass., Copelandia cyanescens (Berk. & Bn) Sing., Gymnopilus aeruginosus (Peck.) Sing., Lepiota helveola Bres. Panaeolus campanulatus (Fr.) QueL, P. castaneifolius (Murr.) 01a9h, P. fimicola Fr., P. sphinctrinus (Fr.) QueL, Rhodophyllum aeruginosus (Hiroe) Hongo，其中，除了C. molybdites之外皆 屬臺灣新記錄種。

The following ten species of mushroom collected from Lan-Yu island are reported in this paper: Anellaria sepuchralis (Berk.) Sing” Chlorophyllum molybdites (Meyer: Fn) Mass., Copelandia cyanescens (Berk. & Bn) Sing., Gymnopilus aeruginosus (Peck.) Sing., Lepiota helveola Bres. Panaeolus campanulatus (Fr.) QueL, P. castaneifolius (Murr.) 01a9h, P. fimicola Fr., P. sphinctrinus (Fr.) QueL, Rhodophyllum aeruginosus (Hiroe) Hongo. Among them nine species are new to Taiwan, except C. molybdites.