226 Allgemeines. — Morphologie etc. — Varietäten etc. 



nomenclature botanique. Enfin l'auteur donne un expose general 

 des regles ä observer pour la formation des noms de plantes. Si la 

 grande importance d'une formation de nom de plante uniforme et 

 generalement acceptee est plus reconnue (de pareils opuscules y 

 attribueront sans doute) la botanique comme l'horticulture y profiteront, 

 Les Hollandais depuis la publication de ce petit livre sont en etat 

 de contröler toujours si un certaine orthographe ou prononciation 

 est bonne ou fausse. M. J. Sirks (Wageningen). 



Sirks, M. J., La nature de la pelorie. (Arch. neerl. Sc. ex. et 

 nat. Ser. HIB. 2. p. 239—284. 1915.) 



The paper has been divided in öparts: 1. Historical introduction; 

 2. Morphological considerations about pelorie flowers; 3. Researches 

 about development and anatomy of normal and pelorie flowers; 

 4. Exterior causes of pelorical flower development; 5. Inheritance 

 of pelorie form; 6. Summary and conclusions. 



The results Coming from the authors own researches, are sum- 

 marized : 



1. The development of the zygomorphic flower in Antirrhinum 

 majus is essentially different from that of normally pelorie flowers. 



2. The pelorie flower of Antirrhinum niajus can be perturbated 

 by seeondary phenomena, f. i. faseiation, and can in that case pre- 

 tend to be a case of gamogemmy, as Vuillemin has thought being 

 general cause of pelorie development. 



3. Floral Innervation of zygomorphic flowers and of regulär 

 pelorie flowers in Antirrhinum majus is based upon the same prin- 

 ciples and gives no indication of gamogemmy. 



4. Vascular course in pelorie plants may also be perturbated by 

 seeondary phenomena, as faseiation. 



5. The materials of Linaria vulgaris examined do not satisfy 

 for giving a decisive proof. The results obtained give also a great 

 many indieations, that pelory and faseiation are independant pheno- 

 mena and that pelory ma}^ be imitated by process^s of gamogemmy 

 as seeondary phenomena, resulting from faseiation. 



Based upon these results, the writer denies the general signifi- 

 cance of gamogemmy as cause of pelorie flowerform, proposed by 

 Vuillemin. M. J. Sirks (Wageningen). 



Laughlin, H. H., The F^ blend aecompanied by genic 

 purity. (Amer. Nat. IL. p. 741—751. 1915.) 



The paper eontains a deseription of mechanieal Charts for illu- 

 strating mendelian heredity in eaeh of three well-known cases of 

 blending inhei-itance in the first hybrid generation: the case of blue 

 (diluted blaek) Andalusian fowl, that of black skinpigment in man 

 and that of coat-colour m shorthorn-cattle. The technical descriptions 

 must be read in original. M. J. Sirks (Wageningen). 



Osborn, H, F., Origin of Single charaeters as observed 



in fossil and living animals and plants. (Americ. Natur. 



IL, p. 193-239. 10 fig. 1915). 



Though for far the greater part the paper is a study of zoolo- 



gical evidenees for origin of Single charaeters, it has also from 



botanical point of view some interest in diseussing one of the 



