Cryptomonads of Japan (2). Three Species of Chroomonas

Abstract

Three species of Chroomonas (Class Cryptophyceae) were described on the basis of the specimens collected from the freshwater of Japan: 1) Chroomonas nordstedtii Hansgirg, 2) C. caudata Geitler, and 3) C. coerulea (Geitler) Skuja. They all have one blue-green chloroplast and one pyrenoid. Under cultural condition, they tend to accumulate cell content, such as starch grains, and increase their cell size, though the color of chloroplast does not change.