70 SIR J. LUBBOCK—PHYTOBIOLOGICAL OBSERVATIONS. 
portion is larger in proportion, and the margin is crenate but 
not toothed. 
Fig. 148. 
Clarkia gaurioides: seedling, 18 days after germination. Nat. size. 
The first two leaves are opposite, oblong-ovate, obtuse, with & 
distinct midrib, but indistinct lateral nerves, and minutely glan- 
dular pubescence all over the upper surface. 
Enothera biennis and (E. micrantha afford a striking contrast. 
The leaf of the former (fig. 149) is broad, nearly orbicular, finely 
ciliated at the margin, and the midrib is rather weak, with strong 
_ curved. lateral branches; that of the latter is (fig. 153), on the 
