290 



BOTANICAL GAZETTE 



actively; the majority come to lie near the dorsal side of the 

 sporophyll and have inverted orientation of xylem and phloem, 

 but several twist around to each side of the bract bundle and have 



Figs. 58-70. — Cnprc.ssiis Benthamii: tig. 58, longitudinal section of young stro- 

 bilus, scale (S) evident only by slight elevations on upper side of sporophyll, and begin- 

 ning of scale bundles; fig. 59, longitudinal section of older strobilus, scale (S) evident 

 but incorporated with tissues of bract (B), X 7; figs. 60-67, three methods of origin of 

 sporophyll bundles; figs. 60, 61, bract (b) and scale bundles (s) distinct in cylinder 

 gap; figs. 62-64, bract bundle derived from one of scale bundles (fo); figs. 65-67, 

 bract bundle derived from both scale bundles (bs); figs. 68-70, transverse sections of 

 sporophyll, scale bundles divide vigorously, some scale bundles persist in bract portion 

 (fig. 70. B), X16; 0, ovule. 



