Cancrinia brachypappus C.Winkl. accepted as Cancrinia discoidea (Ledeb.) Poljakov ex Tzvelev (original description)
Cancrinia lasiocarpa C.Winkl. (original description)
Cancrinia maximowiczii C.Winkl. (original description)
Centaurea tuba Sommier & Levier accepted as Centaurea polyphylla Ledeb. ex Nordm. (original description)
Cirsium albowianum Sommier & Levier (original description)
Cirsium chlorocomos Sommier & Levier (original description)
Cirsium kusnezowianum Sommier & Levier accepted as Cirsium pseudopersonata subsp. kusnezowianum (Sommier & Levier) Petr. (original description)
Cousinia afghanica C.Winkl. (original description)
Cousinia aitchisonii C.Winkl. accepted as Cousinia aitchisonii Boiss. (original description)
Cousinia alpicola borszczow ex C.Winkl. accepted as Cousinia alpina Bunge (original description)
Cousinia barbeyi C.Winkl. (original description)
Cousinia batalinii C.Winkl. (original description)
Cousinia darwasica C.Winkl. (original description)
Cousinia fetissowii C.Winkl. (original description)
Cousinia gilesii C.Winkl. (original description)
Cousinia gmelinii C.Winkl. (original description)
Cousinia haussknechtii C.Winkl. (original description)
Cousinia hemsleyana C.Winkl. (original description)
Cousinia interrupta C.Winkl. accepted as Cousinia radians Bunge (original description)
Cousinia nivea C.Winkl. (original description)
Cousinia postiana C.Winkl. (original description)
Cousinia schlagintweitii C.Winkl. (original description)
Cousinia sect. Pectinatae C.Winkl. (original description)
Cousinia stocksii C.Winkl. (original description)
Echinops niveus Henderson (original description)
Schmalhausenia C.Winkl. accepted as Arctium L. (original description)
Schmalhausenia eriophora (Regel & Schmalh.) C.Winkl. accepted as Schmalhausenia nidulans (Regel) Petr. accepted as Arctium schmalhausenii (C. Winkl.) Kuntze (original description)
Senecio platyphylloides Sommier & Levier accepted as Caucasalia pontica (K.Koch) Greuter (original description)