AASE— MEGASPOROPHYLLS OF CONIFERS 



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Figs. 90-104. — Cliamaccyparis Lawsoniana: figs. 90-99, transverse sections of 

 strobilus axis, showing origin of bract (4-6') and scale (s-s 3 ) bundles; figs. 100, 101, 

 transverse sections of same strobilus, scale bundles remain close to dorsal side; one 

 of sporophylls of lowest pair bears one lateral ovule, each of second pair two lateral 

 ovules, each of third one median ovule, fourth pair sterile; fig. 102, longitudinal 

 section of strobilus, bract (B) and scale (5) separate only at recurved tip of sporophyll; 

 fig. 103, longitudinal section of younger strobilus, scale CS") evident as slight elevation 

 on dorsal side; fig. 104, origin of bract (6) and scale bundles (s) in cylinder gap; X 16. 



