THEIR FORM AND FUNCTION. 235 
Mitella nuda the stems form long, slender, creeping, and rooting 
rhizomes, with orbicular, doubly crenate, hairy, stipulate leaves, 
with a cordate base. The stipules are small, adnate to the base 
of the petiole, free from it for about 3 of their length, surrounding 
the stem, but scarcely connate. 
Fig. 8. 
A. B. 
à | 
A. Ribes sanguineum.—Outer bud-scale with 3 vascular bundles; stipules indi- 
cated by lateral teeth at the tip. 
B. Ribes sanguineum.—Inner bud-scale, with broader membranous margin, 
C. Ribes sanguineum.—Intermediate form between bud-scale and leaf. g, 
Stipule. 
Fig. 9. 
Wi 
N 
RN 
Ribes sanguineum.—Leaf higher up on shoot. S. Stipule. 
Ribes.—In R. sanguineum about five (more or less) of the 
scales of the winter-bud are ovate, acute, 3-nerved, rather mem- 
branous, and consist of the dilated base of the petiole, the lamina 
being represented by a small black point. One oF two suc- 
T Z 
