Paliurus 
aculeatus 
92 ARBORETUM NOTES. 
RHAMNACEZ:. 
PALIURUS ACULEATUS. 
Loudon, v. 2, 527. 
A large plant in the arboretum, and a smaller 
but very flourishing one near the pond in the 
pleasure ground. Both were injured—the older 
one severely—by the winter of 1860-61, but have 
recovered. They flower most years, abundantly 
in fine summers; and in the Autumn of 1857, 
both bore fruit, which however did not ripen 
completely. The prickles are smaller and less 
powerful on these cultivated plants than in the 
wild state. About Rome, this shrub 1s very 
generally used for fences, both live and dead, and 
in either way makes a very formidable fence. 
In October Ist, 1857, my father sent me from 
Barton to Mildenhall, specimens in fruit of 
Paliurus aculeatus. This fruit in its half-ripe 
state, bright yellow-green with a very smooth 
surface; surrounded at its base by the saucer- 
shaped permanent calyx; at first nearly turbinate 
but becoming broader and flatter as the wings 
enlarge: for in these specimens there are three 
distinct wings, not a continuous wing-like border 
as in the ripe fruits that I have from Italy. 
The outer coat of the fruit is thick, of a texture 
(in the present state), between fleshy and mealy ; 
the internal part (the endocarp or putamen), much 
