Cytological studies in Ranunculaceae

VIII. The karyotypes of six species in four genera

Abstract

1. The karyotypes of six species studied in this work can be represented as follows:
Pulsatilla cernua K(2n)=16=8A^m+2B^sm+2C^st₁+2^tC^st₂+2^tD^st
P. nipponica K(2n)=32=16A^m+4B^sm+8C^st+4^tD^st
Anemone debilis K(2n)=16=10A^m+2B^st+2C^st₁+2C^st₂
A. flaccida K(2n)=14=12A^m+2^tB^st
Hepatica triloba K(2n)=14=12A^m+2^tB^st
Caltha fistulosa K(2n)=32=4A^sm+4B^sm₁+4B^sm₂+4C^st₁+4C^st₂+4D^st+4E^st+4F^m
2. The haploid chromosome sets of Anemone flaccida and Hepatica triloba are closely similar to each other, each of them differing considerably from the haploid set of Anemone debilis which resembles the basic set of Pulsatilla-species.
3. The basic chromosome set of Caltha fistulosa is somewhat similar to the haploid set of Trollius Riederianus var. japonicus (Kurita 1955b) excepting that, in the latter, there occur no chromosomes resembling the g-and the h-chromosomes (Fig. 5) of the former in morphology.