CHAP. XLII. 



ROSA CEJE. CRATtE GUS. 



857 



Cratctgus nigra, and C. purpurea. The h\sick-fruited Thorn, and the 



\)\iv^\e-hrancJi€cl Tliorn. 

 Leaves and imm,^— ^ ».^ fruit of the natural size. 



