The Origin of Crepis and Related Genera 



43 



connected in distribution. C. foetida (including several sub- 

 species) is distributed from southwestern Persia and the Caspian 

 region through Asia Minor to western Europe; commutata 



BARKHAUSIA 



PHYLOGENY AND CHROMOSOME NUMBER 



MYRIOCEPHALA 8 SENECIOIOES 8 



NIGRICANS 8 



THOMSONII 10 



HACKELIl 16 



TARAXACirOLIA 8y 



' TARAXACOIDES 16 

 LYBICA 8^ \ ? 



.VESICARIA 8.16 / BURENIANA 8^ | ERITREENSIS 10 

 HYEMALIS 8,^ \ 



^ ' ' ." FOETIDA 10 



clausonis 8^^ \ /^^bursifolia 8 



'commutata 10 



TRIASII 8. \ SETOSA 8. / ^BELLIDIFOLIA 8 



HIERACIOIDES 8 

 DIVARICATA 8 

 CANARIENSIS 8 

 FONT I AN A 8 



RUBRA 10 

 ALPINA 10 

 SYRIACA 10-18 

 ALBIDA 10 



PRE-BARKHAUSIA 

 Fig. 1 1 . Phylogeny and chromosome number in Bar\hausia. 



occurs in Asia Minor and the southern Balkans; eritreensis is 

 known only from Eritrea; Thomsonii is indigenous in north- 

 western India; and the definitely affiliated 8-chromosome species, 

 C. Bureniana, is a native of Persia, Baluchistan, and Afghanistan. 

 All the 8-chromosome Bar\hausia species (fig. ii) are of the 

 Mediterranean littoral, several being island endemics, including 



