64 BOTANICAL GAZETTE [yuLy 
leaves, while in Juglans and Carya, for instance, all the first leaves are 
scale or bristle-like. : 
en, however, the plumule does not develop as a single shoot 
but as a complex of ramifications, the first leaves become almos 
suppressed and appear only as small and rather broad 
scales (fig. 5). In this case, the shoots have pushed 
out very freely from the axils of the lowest leaves, and 
these lateral branches, there is a bud observable it 
the axil of each of the two cotyledons (jg. 6), which 
is evidently ready to develop if the 
become injured. The first developed Z wees € ; 
leaves were perfectly glabrous, in oe 
Fic. 5.—Plumule contrast to the succeeding ones. Fic. 6.—Abit 
of seedling of Per- Th 
sea gratissima; nat- of Persea 
eerece lower surface, but none on_ the ©°ty!edon 
upper. The mesophyll formed a 
homogeneous tissue filled with starch, and. there was 
no 
Z3, the first, seco’ 
and third leaf; mag 
indication either of collenchyma or stereome nified. 
above or underneath the mestome bundles. 
In Lindera and Sassafras, at least in their North American rep 
sentatives, the germination takes place underground, but the plum 
develops as a single shoot. The first leaves are bristle-shaped, 
ceeded by a few whose shape is approximately the same as that of the 
typical leaf. The three-lobed leaf of S. officinale Nees, howevet * 
only seldom observed in the first year of the seedling, those develop” 
ing at this Stage being ovate and entire—Tueo. Hom, Brooklanh 
0 8 aE 
