Galax: the Genus and its Chromosomes
Baldwin JT. 1941. Galax: the Genus and its Chromosomes. The Journal of Heredity. 32(8):249-254
This paper presents Galax aphylla as unispecific but with two chromosome races, one diploid and the other tetraploid. The distribution of the two races is mapped out. The ploidy is expressed by different sized leaves even under favorable growing conditions.