HÅKANSSON, Hannelore, & John R. CARTER 1990 (Dec. 28) An interpretation of Hustedt's terms "Schattenlinie", "Perlenreihe" and "Höcker" using specimens of the Cyclotella radiosa-complex, C. distinguenda Hust., and C. cyclopuncta nov. sp. J. Iowa Acad. Sci. 97(4): 153-156, 12 figs. |