The Jii/irri/aiicc of j'asciatiojis. 495 



Tliese phenomena have l)een more closely investigated 

 by Nestler who regularly found inside the terminal bud 

 of a fasciated branch a line of fasciation instead of a 

 point, in other words a growing comb instead of a grow- 

 ing cone.-^ The leaves arising from this latter are pro- 

 duced in ver}' large numbers and in an abnormal arrange- 

 ment, and in consequence of this, the disposition of the 

 leaves on fasciated stems tends to be extremely irregular ; 

 but although this subject is obviously very important in 

 its bea'-hig on the whole question of phyllotaxy, it still 

 awaits a thorough investigation. In this respect it would 

 be particularly valuable t^o make a study of fasciations in 

 conifers, for our knowledge of the normal structure of 

 tlieir cone of vegetation is much more extensive than it 

 is in regard to that of angiosperms.- Moreover there 

 is no lack of material, for Cryptoineria japonica 111011- 

 sfrosa and the fasciated varieties of several other species 

 are on the market (Fig. 109). 



Besides the cases of ordinary fasciation, and of those 

 in which the surface may be bent by unequal secondary 

 growth, there are some cases of most peculiar conforma- 

 tion which hitherto have been very little investigated. It 

 is not known whether these are the expressions of the 

 same internal character or whether they must be referred 

 to special factors. Their morphological structure is in 

 favor of the latter view : but the former is supported by 

 tlic fact that they have hitherto always been observed in 

 conjunction with ordinarv fasciations, i. e., in si")ecies 

 which are particularly liable to them. Exam])les are af- 

 forded by the multi-radiate and annulate fasciations. 



' A. Nestt.er. Uiifcrsuchiiuf^cii iihrr Fascialioiiru. Ocstcrr. botan. 

 Zeitschrift. 189-I. No. off., with 2 plates 



TT. DiNGLER. Ziiiu Schcitekvachstlmm dcr Gvnuwsf^cnncu. Bcr. 

 d. d. hot. Ge.s., Vol. IV, icS86, p 18. 



