Salisburia 
adiantifolia 
LSO ARBORETUM NOTES. 
CONIFER: 
repeatedly in a dichotomous* manner and extend- 
ing to the margin, without sending out any lateral 
veinlets, or being connected by any transverse 
branches. This peculiarity of the leaves is very 
interesting ; I do not know any other dicotyledon- 
ous plant of which the leaves have this remarkable 
venation; and I think it may be said that, if 
detached leaves of Salisburia had been found in a 
fossil state, and the tree had been otherwise 
unknown, they would almost certainly have been 
considered as belonging to a Fern. But the 
leaves of Salisburia, though so like those of Ferns 
in form and veining, have not the peculiarity 
of arrangement before expansion—the c4rcinate 
vernation, which is so characteristic of that family. 
In the young state their lobes are folded together, 
and somewhat rolled inward, but they are erect 
from the first without the least curving downwards 
of the Apex or of the stalk. Another character to 
be noted in the leaves of Salisburia is, that the 
stomata (or pores of the epidermis) are scattered 
without order, not arranged in lines as they are in 
almost all other Conifers. 
* That is, dividing each time into two equal and similar branches. 
