The Origin and Evolution in Trillium. 3.
Chromosome Variation and the Origin of Trillium apetalon in Asia

Abstract

Chromosome analyses by the cold-induced banding methods were applied to the Asian tetraploid species Trillium apetalon. From the data it has been found that intraspecific chromosome variation is fairly homogeneous. By means of chromosomal and morphological analyses, the species is considered to have originated as a hybrid between the Asian T. camschatcense and the American T. erectum.