• Korean Journal of Ecology and Environment
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• v.37 no.3 s.108
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• pp.282-296
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• 2004

While more than 1,000 taxa in Staurastrum were found worldwide, in Korea only 119 taxa, of 68 species 42 varieties 9 forms, were reported so far. In this study, 23 taxa (19 species 4 varieties) of Staurastrum were collected from 15 freshwaters in Korea from Feb. through Nov., 2003. Among these taxa, 12 were newly recorded to Korea. Therefore, the total number of Staurastrum in Korea should be 131 taxa, of 77 species 45 varieties 9 forms, adding 12 newly found taxa. Most of the collected species were coincided with the characteristics previously described, but the sizes of 8 taxa including S. affine were smaller than those previously described. The 7 taxa including S. cerastesa have shown a little dissimilarity in the morphology of semicell and the decoration of cell wall.

• Journal of Plant Biology
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• v.32 no.3
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• pp.189-201
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• 1989

In this study, genus Cosmarium, 3 species, 2 varieties, 1 forma were sampled at 14 stations from August 1987 to July 1988. The character variations in populations were studied from the cultured plants. As a result, 1 species, 1 variety and 1 forma were treated as synonyms according to the polymorphism found at the same colony. C. angulosum f. rotundatum was different from C. angulosum by the front view, but C. angulosum type and C. angulosum f. rotundatum type occurred simultaneously in the same colony. C. angulosum f. rotundatum was included in C. angulosum which is type species. c. auriculatum, C. subauriculatum and C. subauriculatum var. truncatum have been sorted by the shape of cell and the number of granules at the lower sides of semicell. For three types occurred at the same colony, those species and variety treated as synonym of C. auriculatum which was named first.