72 



PRINCIPLES OP P LAN T -TERATOLOGY. 



many flowers axillary to the calyx ; but, as Goebel 

 points out, these petals are not opposite the sepals. 

 They are, as a matter of fact, opposite the petals of 

 the normal corolla. Goebel includes this phenomenon 

 amongst those of double flowers, but comes, like 

 Masters, to the uninstructive conclusion that they are 

 merely " enations," which explains nothing. In abnor- 

 mal flowers of Primula sinensis two or three similar 



Fig. 90. — Sinningia speciosa ("Gloxinia"). Putaloid enations, with 

 in versed orientation, on outer surface of corolla ; also polymery of 

 the corolla. (J. Weathers.) 



enations were also seen on the outer surface of the 

 corolla; their orientation was the same as in " Gloxinia.'" 

 The suggestion may be made that the " catacorolla " 

 and the " enations " of " Gloxinia " are quite compar- 

 able with the first extra small corolla-whorl of Datura, 

 as seen in Masters' figure, which, we say, was also in 

 the form of an enation from the innermost whorl, but, 

 perhaps through being more corolla-like and better 

 developed, exhibited normal orientation. The struc- 

 tures in " Gloxinia " are probably to be regarded as 

 the representatives of an extra corolla-whorl, but 



