Tolmatchew was an expert in the family Juncaceae, and the West Siberian species " Luzula tolmatchewii " ( now called " Luzula nivalis " ) " " was named after him by Russian Arctic and subarctic botanist Vladimir Borisovich Kuvaev . He was also an expert in some areas of the Brassicaceae or mustard family, the Caryophyllaceae or carnation family, the Papaveraceae or poppy family and the Ranunculaceae or buttercup family.
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According to the same author, the following families are well represented : Magnoliaceae, Lauraceae, Ranunculaceae, Berberidaceae, Hamamelidaceae, Fagaceae, Betulaceae, Juglandaceae, Caryophyllaceae, Chenopodiaceae, Polygonaceae, Plumbaginaceae, Theaceae, Salicaceae, Brassicaceae, Ericaceae, Primulaceae, Malvaceae, Euphorbiaceae, Thymelaeaceae, Rosaceae, Fabaceae, Cornaceae, Araliaceae, Apiaceae, Rhamnaceae, Gentianaceae, Boraginaceae, Scrophulariaceae, Lamiaceae, Campanulaceae, Asteraceae, Liliaceae, Iridaceae, Orchidaceae, Juncaceae, Cyperaceae, Poaceae, Pinaceae, Cupressaceae, Aspleniaceae, Polypodiaceae.
