with Descriptions of two New Species . 749 
having regard to the divergent anatomical characters in some 
of the most natural of natural orders, I prefer following 
Sir Joseph Hooker and others in placing Coryttocarpus in 
the Anacardiaceae. Baillon (Histoire des Plantes, v, p. 327) 
retains it in the Terebinthaceae, under which, however, he 
includes the Burseraceae, Olacaceae (in the widest sense), as 
well as the Anacardiaceae. 
I am indebted to Dr. F. E. Fritsch and Miss H. Lasker 
for the following description and illustrations of the anatomical 
characters of C. laevigata . 
Anatomy of the Leaf. (Fig. 27.) 
The leaf-structure is bifacial. The epidermal cells of both 
sides of the leaf are polygonal in surface view. Those of the 
upper side are somewhat larger than those on the lower side 
and have only a very slight altitude in transverse section (ep). 
Their outer walls are very strongly thickened, and the cuticle 
Fig. 27. Small portion of a ttansverse section of leaf, showing upper epidermis 
{ep), 2-layered hypoderm {hyp), clustered crystals {ccr), and a small part of the 
mesophyll {m). (x 320). 
is smooth. The stomata are confined to the lower side, and 
are provided with a pair of subsidiary cells placed parallel 
to the pore. Beneath the upper epidermis a 1 to 2-layered 
hypoderm {hyp) exists, the cells of which are polygonal in 
surface view and 2-3 times the size of the epidermal cells ; 
their lateral walls are slightly thickened. The lowermost 
layer of the spongy tissue frequently forms a kind of hypoderm 
