534 Descendenz u. Hybriden. — Morphologie. — Physiologie. 



character, that the extraordinary type of foliage of the hybrid 

 is derived. The flowers of the hybrid are bright pink, whilst 

 those of the parents are orange and white, and this is thought 

 to be due to the hybrids inheriting the white chloroplasts of 

 K. Bentii and the pink cell-sap of K. flammea (which together 

 with yellow chromaplasts gives rise to the orange flowers of 

 this species). With regard to the foliage it is concluded that 

 we have a case of reversion to an ancestral character which is 

 to be found elswhere (K. laciniata) in the genus, but is latent 

 in both parents. 



The second hybrid differed from the first in the extreme 

 slowness of its growth and only began to show the pinnatisect 

 leaves of the former after two and a half years. It has not yet 

 flowered. 



It has a yet been impossible to raise seedlings from the 

 hybrid. F. E. Fritsch. 



COSTERUS, J. C, Opmerkingen over den bouw der 

 bloemen van Canna naar aanleiding van eenige 

 waargenomen afwykingen. (Nederl. Kruidkundig 

 Archief. 3. Srie. 2. Deel. 3. Stuk. p. 807.) 



Einige abnormale Canna-Blüthen, welche dem Verf. von Herrn 

 Smith aus Bu i te nz or g zugeschickt waren, boten ihm die Gelegenheit, 

 die beiden von Eichler aufgestellten Blüthendiagramme zu prüfen. Die 

 Untersuchungen brachten Verf. dazu, dass wirklich bei der Cß//«ö-Blüthe 

 die äusseren Antherenquirle unterdrückt sind und dass die epipetale 

 Quirle hier aus zwei Theilen bestehen, nämlich der Staubfaden mit seiner 

 blattförmigen Ausbreitung und das Labellum. Die Flügel sind als Spal- 

 tungsprodukte des Staubfadens zu betrachten. Vuyck. 



Willis, J. C, On the Dorsiventrality of the Podoste- 

 maceae with reference to current views on Evolu- 

 tion. (Annais of Botany. Vol. XVI. Dec. 1902. p. 593 

 —594.) 



This is merely an extract of part of the author's paper on 

 the morphology of the Podostemaceae in the Annais of the 

 Royal Botanic Gardens, Peradeniya. Its chief points are the 

 forcing of dorsiventrality on the floral organs by the increa- 

 sing dorsiventrality of the vegetative parts and „the insecurrty 

 of our conceptions of genera and other taxonomic groups". 



F. E. Fritsch. 



Coupin, Henri, Sur l'assimilation du magnesium par 

 1 e Sterigmatocystis nigra. (Comptes rendus de la Societe 

 de Biologie. Seance du 7 mars 1903. p. 329—330.) 



Le magnesium est absorbe aussi bien sous forme de phos- 

 phate, de sulfite, de chlorure, d'azotate, de bromure, de sulfate, 

 de citrate, d'acelate que sous la forme de carbonate, adoptee 

 par Raul in. Paul Vuillemin. 



