]> [author note: Acad. Sci.; Pl. Taxonomy, Nomenclature, Biosystematics, Potamogetonaceae, Luzula, Valerianella, Knautia, Crepis, Tragopogon; Col. at: PRA] [collector note: Most of Europe, Russian Siberia; PRA] Botany Kaplan, Zdenek Kaplan, Zdenek Z. Kaplan Zdenek Kaplan 1972