TAXONOMIC STUDIES ON SOME SPECIES OF DIATOM A
等片藻属几个种的分类学问题研究

Six species and four varieties of Diatoma (D. hiemale (Roth) Heib. , D. maximum (Grun. ) Fricke, D. mesodon (Ehr. ) Kuetz. , D. moniliforme Kuetz. , D. tenue Ag. , D. vulgare Bory and its varieties) were studied using optical microscope and scanning electron microscope. Their taxonomic problems were discussed as well.