70 Morphologie, etc. — Varietäten, etc. 



Zum Schluss werden auch andere bei Irientalis angetroffene 

 ßildungsabweichungen erwähnt. Grevillius (Kempen a. Rh.)- 



Seliber, G., Sur les pigments des graines de quelques 

 plantes. (C. R. Sog. Biol. Paris. LXXIX. p. 793—794. 1916.) 



Quelques notes sont faites d'une coloration jaune ou brune 

 (ensuite brun fonce et enfin rouge ou rouge fonce) que l'auteur a 

 obtenu en chauffant les graines de certaines plantes dans une Solu- 

 tion de soude caustique. Les plantes, dont les graines furent 

 extrahees, sont de lentilles, la vesce, plusieurs sortes de feves, de 

 haricots, de la luzerne et de plusieurs sortes de trefle. Outre les 

 graines de ces plantes, les graines d'autre plantes ont donne une 

 coloration brune ou rouge de nuances differentes en presence d'une 

 Solution de soude caustique. En ce qui concerne ces nuances, il 

 faut ajouter que diff^rents Sucres peuvent donner aussi sous l'action 

 d'une Solution de soude caustique, une coloration jaune ou brune. 



M. J. Sirks (Wageningen). 



Bateson, W., Root-cuttings, Chimaeras and Sports. (Journ. 

 of Genetics. VI. p. 75—80. 1916.) 



The object of this paper is to point out that some unsuspected 

 plants are in reality periclinal chimaeras. 



Attention is called to an address b}^ C. E. Pearson in which 

 it is stated that some Bouvardias and the class of Pelargoniums 

 known as "Regals" did not come true from root-cuttings. 



This behaviour is interpreted by the author as indicating that 

 the plants are periclinal chimaeras — as indeed may be inferred to 

 be the case whenever plants grown from root cuttings diifer from 

 those grown from stem cuttings. 



Apart from the graft hybrids, in the only examples hitherto 

 known, the distinctions have been between the presence and nature 

 of the chloroplasts, such as occur in Antirrhmum and Pelargonium. 

 In Bouvardias, however, some doubles are said to give Singles from 

 their root cuttings and several differences in colour are reported. 

 The only case occurring in the course of the author's own experi- 

 ments giving a positive result is the variety "Bridesmaid" — a double 

 pink which has given uniforraly from its root-cuttings plants agree- 

 ing in every respect with the variety known as "Hogarth", a double 

 carnation-scarlet. 



There seems to be no reason why the distinction should not 

 affect any factorial character, and further investigation will no 

 doubt add considerably to the few already known. Pending further 

 evidence it is natural to Interpret these cases as examples of 

 heterozygous plants in which there has been somatic segregration 

 of a factor at an early stage. W. Neilson Jones. 



Gates, R. R., Vegetative segregation in a hybrid race. (Journ. 

 of Genetics VI. p. 237-253. 1917.) 



References to somatic mutations or bud Sports are chiefiy to 

 sporadic occurrences. These, in many cases, are interpreted as a 

 local Splitting out of a recessive character in a heterozygous race. 

 No case is known to the author of somatic segregation on a large 

 Scale, unless certain „eversporting" varieties are interpreted in this 



