752 



CCXXIV. CYCADE^. 



globose ovoid or cylindric, 

 and sometimes 10 feet in cir- 

 cumference (thicker in the 

 9), covered witli the persis- 

 tent bases of the petioles, or 

 marked with circular scars; 

 pith voluminous, surrounded 

 with one or more zones of 

 wood, each the result of 

 several years' growth, and 

 composed of woody fibres 

 and punctate rayed or reti- 

 culate vessels arranged in 

 radiating lines separated by 

 medullary rays, and enve- 

 loped in a thick layer of 

 cortical parenchyma. Leaves 

 of 2 forms : the one short, 

 hard, scaly {ferules), enclos- 

 ing the terminal bud ; the 

 others normal (as in Palms), 

 and pinnate [or 2-3-pinnate, 

 Bowenia] ; leaflets entire or 

 denticulate, coriaceous, plane 

 or waved; nerves slender, 

 parallel and equal (Zamia), 

 or reduced to a prominent 



Zamia, 



Antlieriferous scale, 



anterior face. 



Zamia montana. 

 3 catkin, entire and cut. 



Zamia. 



^ntheriferous scale, 



posterior face. 





Zamia, 

 PoUen-graiDs. 



