AbstractC. subopulifoliumJ. MURR, Magy. Bot. Lap. 1, p. 340, Tab. 2, Fig. 8, 1902 emend. D. is ± stabilized hybridogenous species. In his genotype there participate:C. pseudostriatum(ZSCHACKE) J. MURR, Dt. bot. Monatsschr. 19, p. 51, 1901;C. × gruelliiAELLEN, Acta Mus. Moraviae, Sci. Nat., Brno 56–57, p. 167, 1971–1972 (=C. ficifolium × pseudopulifolium).I subsumeC. subopulifoliumJ. MURR emend. D. together withC. interjectumJ. MURR emend. D., C.laciniatumJ. MURR emend. D.,C. canescensD.,C. pseudoborbasiiJ. MURR,C. mediterraneum(AELLEN) D. andC. fallax(AELLEN) D. under the seriesPseudostr