1926] Babcock-Lesley : Chromosomes and Taxonomic Eclaiionships 327 



y 



Fig. 7. Typical aehene of: y, Crepis sibirica. X 7 circa. 



from that of taraxacifolia in Barkhausia, but hiennu (N = 20) and 

 montana (N:^6) stand apart from all other species from the stand- 

 point of chromosome number. 



It should be observed that C. neglecta has long been a troublesome 

 species to students of this difficult genus. In the Genera Plantarum 

 (Bentham and Hooker, 1873) neglecta is considered as intermediate 



