MORPHOLOGY OF ANGIOSPERMS. 153 



The terms used in describing the kinds of ovules (atropous, 

 anatropous, campylotropous, etc.), are retained in the description 

 of the seeds ; and in describing the different parts of the seed some 



Fig. 92. Burdock (Arctium Lappa) showing large basal leaf, a flowering branch, 

 and at the lower left-hand corner a few of the burs on which a bat has been caught and 

 apparently held until it died. 



of the terms which were applied to the ovule are also retained, as 

 chalaza and raphe; the seed when ripe usually becomes detached 



