334 BOTANICAL GAZETTE [MAY 
smooth or ridged, usually with conspicuous leaf scars; cross-section 
showing a thick cortex, a single vascular cylinder, and pinkish, brittle, 
starch-bearing pith: leaves 0.6 to 1™ long, 6—4o in the crown; petioles 
2.—Staminate sporophylls; the two at the left show the adaxial surface, 
the two at the right the abaxial surface, the middle one a lateral view. 
17™ long, terete, with shield-like base; leaflets 50-80 pairs, 8-12°™ 
long, opposite or alternate, attached by an entire calloused base, finely 
villous when young, glabrous and glistening when mature, bright 
Fic. 3.—Ovulate sporophylls, Seti (beginning at the left) abaxial view, 
adaxial view, lateral view, and abortive 
green, with 15-20 dichotomously branching veins (reduced to 6-8 at 
the tip), bluntly pointed, tips turning inward slightly, margin slightly 
revolute: bud scales 4-6°™ long, 1.5-2°™ wide, often twisted at tip, 
