266 



PLANT LIFE 



the main axis perishes at the end of the growing season 

 (fig. 299). 



367. (d) Cuttings or scions.— Closely related to this 

 mode of reproduction is that by the separation of fleshy 



Fig. 299. — A seedling potato plant. ( is the baseoi the stum, below whi< h is the primary 

 root. r. The primary leaves < t, are still present. The early leaves,./! rlre not so much 

 branched as later ones will In-. In the axils of the lower leaves arise the branchi 

 with scale leaves, e'e, and secondary roots, 1 . The tips of these branches, when 

 illuminated, bear foliage leaves, /' ; but usually they thicken into tubers,//., which 

 have scale leaves, e'i , in whose axil bud an formed, the o-called " eyes " of 



the tul hi Natural size. — After Duchartre. 



members, upon which are subsequently developed adventi- 

 tious buds, which give rise to new plants. The thick leaves 

 of Bryophyllum are often Mown off by storms, and produce 



new plants from buds formed at the teeth along the edge. 



