A species of unclear taxonomical position, considered by Russian botanists as C. subremota but regarded by M. Liden and H. Zetterlund as a subsp. of C. solida complex. Flowers bluish-violet, finely divided foliage. Collected by Baltic expedition in locus classicus near Krasnojarsk in Siberia, very far from Europe where true C. solida is distributed in nature. Great rarity.