D. Wahlanbergii 
D. megasperma Farnalcr &'Knowlt on 
C. pycnosperma Fern, & Knowlt. 
D. incana L. _ 
'huHJkt,-ui.vii(tyj *,.e■)D(J&&)< f 
D. incana v. confusa (Ehrh. ‘)?oir. 
($**), C#- ?S. rC. 
D. stylaris J.Gay 
D. arabisans Michx. * 
.fafu.t&aM (ftj. ?n#a, <$*/><*. b t >, 
D. arab. v. orthocarpa Fern.& Knowlt. 
farfaC+t** (hj /iCSa-i ~ & - tyrsAb , 
