1915] HOLDEN—CUTICLES OF CONIFERS 227 
30. THompson, W. P., The structure of the stomata of certain cretaceous 
conifers. eres Gax 54:63-88. pis. 5, 6 
31. ZEILLER, R. Wa higiowe sur quelques eas fossiles. Ann. Sci. Nat. 
ot. VI. 13: Ok: 
32. UNGER, F., Genera et gen Plantarum Fossilium. Vindobonae. 1850. 
EXPLANATION OF PLATE XI 
Fic. 1.—Palissya indica: showing general habit; linear leaves, with 
decurrent bases, in spiral phyllotaxis. 
Fic. 2.—Echinostrobus expansus: showing general habit; small, closely 
imbricated, decussately opposite leaves. 
Fic. 3.—Tavxitis tenerrimus: showing general habit; linear leaves, with 
decurrent bases, in spiral phyllotaxis, with distinct midrib. 
Fic. 4.—Palissya indica: single stoma, showing 6 accessory cells, and 
thickened lamellae of guard cells. 
Fic. 5.—Echinostrobus expansus: single stoma showing 4 accessory cells. 
IG. 6.—Same: cuticle of single leaf, showing irregular shape of epidermal 
cells and scattered stomata. 
Fic. 7.—Podozamites lanceolatus: single — showing 6 accessory cells, 
and cuticular rims, probably on intercalary ce 
- Fic. 8.—Tavxitis tenerrimus; ea of face surface, showing stomata 
scattered on each side of the mi 
Fic. 9.—Palissya indica: etc from leaf; toward the left is the upper 
surface; feed the right, the lo 
IG. 10.—Podozamites Toicittolas: cuticle showing rows of stomata, 
with their long axes parallel to the side of the leaf. 
1G. 11.—Palissya indica: cuticle of se surface, showing eh 
disposition of stomata and shape of epidermal cells. 
