164 Mr. Woops on the British Species of Rosa. 
in others, though somewhat different on different parts of the plant; 
yet on any given part they are nearly similar. Some further obser- 
vations on this head will be found in the description of the surculi. 
Some Roses in the place of sete exhibit white warns, weak, but 
not very fine: in R. Borreri the peduncle has sometimes weak 
 setw, sometimes these white hairs, and sometimes, though more 
— rarely, a fine pubescence: hairs also occur on the upper side of 
the axillz of the foliole, and occasionally also along the channel 
on the upper side of the petiole in most Roses; and sometimes the 
petioles and the nerves on the underside of the leaf are covered 
rather with hairs than with down ; but from this. point the hairi- 
ness passes insensibly into pubescence, with which it is even in- 
terchangeable. On the upper side of the-leaf likewise a few 
straggling along the nerves may occasionally be observed in all 
the smooth-leaved Roses ; the seeds also and the styles are gene- 
rally hairy or villous. ‘The weak white hairs occur in every part - 
of the plant on which glands or sete are found, being a produc- 
tion apparently of a similar nature. ` oradi 
Cuarr may be observed occupying the place of hairs at the 
axillæ of the folioles of R. spinosissima and some others of that 
tribe. I have not observed it elsewhere. 
Punzscrwcz is found on the stems, reeeptacles, calyces, sti- 
pulæ, and folioles. The presence or absence of hirsuties, whether. 
of coarse or fine hairs, on the petiole and on the veins beneath the 
leaf, appears to me of considerable importance; and it is observ- 
able that these always accompany each other. Individual leaves 
may doubtless be found in which the petiole is downy and. the 
nerve naked, or perhaps sometimes just the reverse; but a more 
extended examination will assuredly demonstrate their connexion. 
To the pubescence of the inferior and superior paginas of the leaf 
| | i attention. 
