Figs. 6-ii. — Fig. 6, long section of primary shoot showing scars of secondary 

 shoots of two previous seasons; primary axis remaining dormant, not producing 

 secondary shoot the season collected; X24; fig. 7, detail section through scar (note 

 shaded abscission layer and corklike wound tissue external to it); X140; rig- 8, 

 primary shoot with mature ovule and projection at base of ovule showing external 

 appearance of a normal second season's growth of primary shoot; fig. 9, longitudinal 

 section of primary shoot showing half-grown ovule of current season and young ovule 

 of next season (primary axis tip shown below younger ovule); X17; fig- 10, terminal 

 primary shoot; fig. 11, longitudinal section of terminal primary shoot (leaf base 

 shown at lower end of figure; note branch scar, left by secondary shoot of preceding 

 season, and that primary axis tip has begun growth for third successive season); 

 aril shown at base of ovule; Xi7- 



