Ill 



ANATOMY STUDY OF THE SHOOT 



21 



The Sucker is an aerial branch given off by an underground 

 stem ; it runs for a short distance beneath the surface, and then 

 strikes upwards, forming a new plant, e.g.^ the Rose and Mint. 



Subterranean Stems grow beneath the surface of the 

 ground, and are often termed, in popular language, roots. 



FIG. 15. Runner of Strawberry. 



FIG. 16. The Off-set of the House-leek. FIG. 17. The stolon of the Couch-grass. 



Many perennial plants are able to exist throughout the winter 

 by means of underground stems. 



The Rhizome is a creeping underground stem which produces 

 both roots and leaves. The roots are produced from the under- 

 surface of the stem, and the leaves from the upper. Rhizomes 



