Vlll 
Index. 
Figures. 
11. Transverse sections through apex of ovule (Tiiod ay) . . . 1116 
12. Transverse section of micropylar tube of young unfertilized ovule 
of Gnetum scandens (Thoday) . . . . . . .1119 
13. Sections showing changes in abortive ovules (Thoday) . . . 1121 
14. Longitudinal section through apex of abortive ovule of Gnetum 
africanum (Thoday) . . . . . . . . .1122 
15. Series of transverse sections through micropylar tube of fertilized 
ovule of Gnetum africanum (Thoday).1122 
16. Abortive ovule from male inflorescence of Gnetum scandens (Thoday) 1123 
I. 
Mesembryanthemum pseudotruncatellum (Summers) 
. 1138 
2. 
Longitudinal section through the ‘ corpusculum 1 (Summers) . 
• TI 39 
3 , 4 * 
Cells from upper epidermis (Summers) ..... 
. 1140 
5 , 7 - 
Cells from side epidermis (Summers) ..... 
. 1141 
6 . 
Cell from upper epidermis (Summers) ..... 
. 1141 
8. 
Cells from upper epidermis (Summers) . . . . 
. 1142 
h IO * 
Seedlings 20 days old (Summers). 
. 1144 
1, 2. 
Glands in Platycerium (Dummer). 
. 1205 
