This paper describes and illustrates three species of Chytridiales that were isolated and purified. They include: Entophlyctis pygmaea (Serbinow) Sparrow, Rhizoclosmatium hyalinum Karling, and Septochytrium variabile Berdan. All species are new to Taiwan. 本文描述三種壺菌類由不同基質誘釣分離,它們分別是:矮小內壺菌(Entophlyctis pygmaea)、透明球壺菌(Rhizoclosmatium hyalinum)、以及隔壺菌(Septochytrium variabile),均為臺灣新紀錄種。