234 SIR JOHN LUBBOCK ON 
membranous portion of the leaf. Still lower down, the section 
shows differentiated tissues of an axial nature. 
Clearly, then, there are no stipules, and the fleshy protuberance 
in front of each leaf-stalk is the first leaf of an axillary shoot. 
Petiveria alliacea, Linn.—The stipules are small, fleshy, erect, 
subulate, flattened on the inner face, obtusely keeled on the 
back, drying up and falling with or slightly before the leaves, 
and, like the latter, in due succession. They are perfectly free 
and lie in front of the petiole in their early stages, but after- 
wards spread at right angles to the axis or nearly so. 
The terminal bud is protected by the oldest not yet expanded 
leaf, which folds over it, protecting all but the midrib of the 
second leaf. All are sessile or subsessile at this stage and downy 
on the back. The erect petioles of the younger expanded leaves 
also afford some protection. 
Axillary buds protected by the ascending or erect petioles, and 
in their early stages more particularly by the stipules, which are 
inserted at their base, folded over them in front of the petioles, 
and filling the space between the latter and the axis. The first 
Jeaves of the axillary shoots are very hairy and also furnished 
with stipules. 
POLYGONACER. 
Muehlenbeckia v:rians, Meissn. (fig. 41).—The stipules are 
in the form of membranous ocree, cylindrical in form, closely 
investing the axis, truncate, and entire. 
The terminal bud consists of a number of leaves closely 
invested by the ocreate stipules. 
Fig. 41. 
Muehlenbeckia varians, nat. size. sel: 
Apex of growing shoot. 7, leaves revolute at the margin, and yet unexpan® 
st’, st”, SU", stipules, shaded and striated. 
