490 SIR JOHN LUBBOCK ON STIPULES, 
perfect leaves with three small leaflets and subulate stipules 
follow; the stipules become free at or above the middle of the 
petioles. Succeeding leaves are much larger, with lanceolate or 
linear-lanceolate, foliaceous, subtomentose stipules. 
The growing bud is made up of numerous leaves, with con- 
duplicate leaflets again strongly plicate along the course of the 
lateral nerves. The three central leaflets are nearly parallel; 
but the lateral pair are slightly in front of the terminal one. 
The basal pair are folded and imbricate over the face of the 
middle pair. The stipules are narrow, but nearly of their full 
length, though shorter than the leaflets, and occupy the space 
between the leaf and the axis. The protection they afford is only 
partial, and the tomentum on the back of the leaves must assist 
considerably. 
The axillary buds are amply protected in their early stages by 
the dilated base of the petioles and the stipules; the latter are, 
however, too high up the petiole to be of much service, so that 
the terminal or growing bud is most benefited by them. 
R. suberectus, Anders.—Five or six of the larger and more 
elcngated scales of the winter-bud are tridentate or trifid, but 
shorter than those of R. rhamnifolius. One or two small, but 
otherwise perfect leaves follow, and have triangular or ovate 
stipules inserted not far from the base of the petiole. The 
succeeding leaves are full-sized, with lanceolate, then linear- 
lanceolate stipules, free almost to the base of the petiole; they 
protect more of the growing bud than in R. rhamnifolius, owing 
to the axis being thinner and the bud smaller. 
The axillary buds are protected by the base of the petiole, 
which long remains erect or sharply ascending. The stipules 
also render more assistance in this case, as they bridge over the 
space between the petiole and axis, and being more or less rolled 
round they cover a considerable portion of the latter. 
Stipules of two or three forms. 
Potentilla simplex, Michx.—Winter-bud subterranean, covered 
by several broad or dilated tridentate scales, consisting of the 
petiole and the adnate stipules. The middle tooth is frequently 
tridentate, representing the lamina, in which case the scales 
consist of the whole leaf modified. 
The stipules of the radical leaves are membranous, adnate to 
