198 



A TEXTBOOK OF BOTANY 



[Ch. IV, 12 



in our gardens. 



meristematic tissues or the reproductive cells, and these are 

 the kinds which it is possible to propagate, and thus preserve 



Fig. 144.— 

 A Pineapple, 

 fasciated to 

 an unusual 

 degree. It is 

 flattened in 

 the plane that 

 is\dsible; X4. 

 The Pineap- 

 ple is mostly 

 stem covered 

 with coales- 

 ce n t small 

 ovaries and 

 bracts. 



(Drawn from 

 a pho t o - 

 graph.) 



The first step towards a faseiation would 

 be a bifurcation, sometimes seen 

 in the fronds of Ferns, and in some 

 double fruits, i.e. in Orange (Fig. 

 146). 



Closely related to fasciations are 

 cases of unregulated bud develop- 

 ment, most famihar in the Bird's- 

 eye Maple. The eyes are knots, 

 that is, buried branches, developed 

 from a mass of adventitious buds 

 which start on the side of a trunk 

 of a Maple, presumably as a result 

 of some injury (page 137), and in 

 their growth al)out keep pace with 

 the expansion of the trunk. An- 

 other prominent case is found in 

 " Witches' brooms " (Fig. 147 \ 

 those dense masses of slender twigs 

 found on the upper branches of 



Fio IV) — f rcith f isd 

 ated or crested Efhinutattus 

 (From Riimpler.) 



