518 
inthe autumn. The Scotch botanists have detected 
six new species. Did Harriman transmit Juncus 
castaneus to you from Teesdale? I was not aware 
we possessed this rare plant. Adieu, &c. 
N. J. WincH. 
Robert Brown, Esq. to Sir J. EL. Smith. 
My dear Sir, Dean Street, February 2, 1825. 
It is very gratifying to me, to find that you are 
likely to adopt the greater part of the genera I have 
proposed in Crucifere. As to M. DeCandolle’s 
labours in this difficult family, I think he has made 
several improvements in his divisions of genera, and 
I remember Ithought,—but I confess I have not suf- 
ficiently studied it,—that his Dzp/otazts would pro- 
bably be adopted. I have no hesitation however in 
saying, that he has pushed his divisions from modi- 
fications of form and direction of cotyledons much 
beyond their value, and, in giving nearly equal im- 
portance to all these modifications in every part of 
the order, has proposed subdivisions or tribes which, 
though more natural than Linnzeus’s Stculosa and 
Siliquosa, are still in some degree artificial; one 
curious proof of this is,—and several others might 
be mentioned,—that not having thought it necessary 
to examine the most common plant of the family, 
namely Bursa Pastoris, he has placed it where it 
really ought to be, but where it cannot remain ac- 
cording to his own system. 
Believe me, my dear Friend, most faithfully yours, 
kh. Brown. 
