Dec 24, 2012

Thorea okadae(チスジノリの標本)

A fresh water red alga, Thorea okadae, is endemic to Japan, has been confirmed from several rivers in Kyushu Island, and appears to be rare in Honshu Island. Due to it rarity, habitats in the Kikuchi and Sendai Rivers, of Kumamoto and Kagoshima Prefectures, respectively, have been registered as natural monument of Japan. Recently, I had an opportunity to observe the herbarium specimens of this alga for the preparation of manuscript of the revised red list of Japan.