FLOWER OF GNETUM 
171 
Thibout, E., 1896. Reclierches sur l’appareil male des Gymnospermes. Lille. 
Thoday, M. G., 1911. The female inflorescence and ovules of Gnetum africanum, with 
notes on Gnetum scandens. Ann. Bot. xxv, p. 1101. 
and Berridge, E. M., 1912. The anatomy and morphology of the inflorescences 
and flowers of Ephedra. Ann. Bot. xxvi, p. 953. 
Tulasne, L. R., 1858. Gnetaceae Americae australis. Ann. Sci. Nat. (4), x, p. no. 
Van Tieghem, Ph., 1884. Traite de Botanique. Paris. 
Von Wettstein, R., 1907. Uber das Vorkommen zweigesc.hlech tiger Inflorescenzen bei 
Ephedra. Festschrift d. Naturw. Ver. Univ. Wien, 1907, p. 21. 
Worsdell, W. C., 1901. The vascular structure of the “Flowers” of the Gnetaceae. 
Ann. Bot. xv, p. 766. 
EXPLANATION OF PLATES 
C = cupule. 
M = nodal meristem producing male flowers. 
Tr. = bundle in envelope of male flower. 
m.t. = main trunk of bundle system of antherophore. 
Figs. 5 A and B =G. scandens-, the remainder = G. Gnemon. 
Fig. 1. An inflorescence shewing both whorled and spiral arrangements of cupule and 
flowers x 3. 
Fig. 2 A. Long. sect, of youngest male inflorescence seen x 20. 
x = female flower enlarged in 2 B. 
Br= bract. 
2 B. The flower x in 2 A x 150. 
Ci = subtending cupule. 
C 3 = cupule of node next above. 
E = outer envelope. 
Fig. 3. (Drawn from specimens cleared in potash. Cf. Church, 1915.) 
A. A male flower with fully extended antherophore and dehiscing anthers x 24. 
B and C. Bases of adult male flowers shewing form of edge of envelope x 150. 
In B one bundle of the antherophore branches near the base ; at a higher 
level the branch (Bi) anastomoses with the other bundle, 
in = inner limit of thickness of envelope. 
Fig. 4. Long, section through node of male inflorescence from which all the older (upper) 
male flowers have fallen. The section passes between the insertions of two 
incomplete female flowers. 
ft = traces which supplied the fallen male flowers x 20. 
Fig. 5 A. Long, section through node shewing one female and four male flowers and the 
main trunks of the vascular system x 21. 
5 B. The female flower of 5 A x 100. 
Fig. 6. Long, section through node shewing one female and four male floweis and the 
main trunks of the vascular system x 21. 
