ON PALMS, CYCADS, AND BAMBOOS. 



843 



are terminal and pinnatisect, with a quantity of segments, the 

 upper ones being opposite and the lower ones alternate — this is 

 one of the most distinct characters of the genus. The plants 

 thrive splendidly in a rich compost of two parts good loam and 



one of peat and sand, and require an abundant supply of water 

 during the growing period. Propagated by seeds. P. mac?'ocarpa 

 produces the vegetable ivory of commerce ; it forms a somewhat 

 creeping stem, with beautifully arched rich deep green leaves, 

 varying from 15ft. to 20ft. in length, with rather long pinnae, and 



