622 



APPENDIX A 



MONOCOTYLEDON 



DICOTYLEDON 



Flower parts in threes 

 or multiples of three 



Flower parts in 

 fours or fives 



Leaves usually parallel veined 



Leaves usually net veined 



Stems with scattered 

 (closed) vascular bundles 



Stems with regularly arranged 

 (open) vascular bundles 



One 

 cotyledon 

 (seed leaf) 



Roots with many 

 xylem elements 



f 



Two 



cotyledons 



(seed leaves) 



Roots with three, four, 

 or five xylem elements 



Fig. A. 22. A comparison of some characteristic features of dicots and monocots. (Modified 

 from Turtox chart, courtesy General Biological Supply House, Inc.) 



