Pollen and Spores 

 - Oxford:  Systematics Association by Clarendon Press,  1991. 
 - xi,391p.;  ill.  24cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants noted for specific vegetative characteristics and flowers
<br/><br/><label>Dewey Class. No.: </label>582  / POL