86 A NOTE ON THE WOOD OF GNETUM GNEMON 
BIBLIOGRAPHY 
Bailey, I. W., 1909. The structure of the Wood in the Pineae. Bot. Gaz. vol. xlviii. 
Boodle, L. A. and Worsdell, W. Cl, 1894. On the Comparative Anatomy of the 
Casuarineae, with special reference to the Gnetaceae and Cupuliferae. Ann. Bot. 
vol. VIII. 
De Bary, 1884. Comparative Anatomy of the Vegetative Organs of the Phanerogams and 
Ferns. English translation. 
Duthie, A. V., 1912. The Anatomy of Gnetum Africanum. Ann. Bot. vol. xxvi. 
Engler and Prantl. Natiirliche Pflanzen-Familien, n, 1. 
Thomson, R. B., 1913. On the Comparative Anatomy and Affinities of the Araucarineae. 
Phil. Trans. Series B, vol. cciv. 
Thompson, W. P., 1912. The Anatomy and Relationships of the Gnetales. Ann. Bot. 
vol. xxvi. 
EXPLANATION OF PLATE 
PLATE VIII 
Fig. 1. Element of protoxylem, somewhat scalariform. x about 550. 
Fig. 2. Elements of protoxylem showing combination of scalariform thickening and 
bordered pits, x about 550. 
Fig. 3. Parenchyma cell containing starch, cut off from end of tracheid. x about 550. 
Fig. 4. Medullary ray in transverse section showing radial division of the cells. 
Single row towards the pith, x 246. 
Fig. 5. Medullary ray in transverse section enclosing one row of wood elements, 
x 250. 
Fig. 6. Medullary ray in tangential section ; fusiform in shape and enclosing xylem 
parenchyma and a tracheid. x 63. 
Fig. 7. Showing origin of cork from layer under the epidermis, x 260. 
