BY DR. M. B, BORKHAUSEN. 221 



rough as well as in the smooth variety, both the 

 radical and cauline leaves are subject to variation, so 

 that I have never been able to find distinct specific 

 characters for Scabiosa Columbaria and tenuifolia 

 (ochroleuca L.) In that which I consider as the 

 smooth variety, I found the following diversities; 



a. root-leaves obovate, crenate ; cauline leaves 

 pinnate ; • leaflets lanceolate or linear. 



b. root-leaves obovate, deeply notched or cut; 

 the lower cauline leaves pinnatifid; the upper 



a. pinnate : leaflets entire, lanceolate. 



0. pinnate : leaflets lanceolate, gashed, some- 

 times partly pinnatifid. 



y . doubly-pinnate : the last leaflets very 

 narrow and pointed. 



c. root-leaves pinnatifid, the odd segment very 

 large (nearly as in Erysimum Barbarea) and 

 notched or deeply cut ; the lower cauline leaves 

 pinnate : leaflets narrow, sharp-pointed ; the upper 

 doubly pinnate, or also simple. 



d. root-leaves and lower cauline leaves pinnate ; 

 leaflets pinnatifid ; upper cauline leaves doubly 

 pinnate, as in No. c. 



