282 PHYSIOLOGICAL BOTANY. 



FLOWERS FRUCTIFICATION. 



Contributions to our Knowledge of the Inflorescence of 

 Cannabis, Humulus, Urtica, and Parietaria, as also ofPar- 

 nassia palustris, Erodium, and Inipatiens. By WYDLER. 

 Flora, 1844, p. 735, 757, 759. They contain accurate 

 explanations, and form supplements to the memoir in the 

 'Linnsea/ 1843, which was spoken of in the last annual 

 Report ; also remarks upon the ramification of the latter 

 plant. The author's observations upon the arrangement 

 of the leaves of Polycarpon tetrapliyllum, should be com- 

 pared with the above. Flora, 1845, p. 33. 



Remarks upon the Symmetry of the Corolla. By D. 

 WYDLER; Bot. Zeit, 1844, 609. The author's mor- 

 phological investigations are communicated in a very 

 indistinct style. " As we know," says the author, " most 

 symmetrical corollas may be divided by a line into two 

 equal halves, which, starting from the derivative axis of 

 the flower, we imagine to be drawn through the middle of 

 the upper odd sepal and the lower odd petal towards the 

 bract. To this class, amongst others, belong Pinguicula, 

 Utricularia, the Labiatse, &c." But the corolla is a solid 

 figure, which cannot be divided into two equal halves by 

 a line, although it can by a plane. The author means to 

 say that a tranverse section of the flower near its base, a 

 plan of the flower, is divided by a line into two equal halves. 

 This is the manner in which the subject is illustrated 

 by the figures. With a different mode of illustration, 

 numerous conclusions might be drawn, but these cannot 

 be given here. 



Morphological Considerations upon Arduina bispinosa. 

 By PIETRO SAVI. Giornal. Encicl., i, 113. 



Remarks upon some Microscopic and Superficial Organs 

 of Plants. By PIETRO SAVI. Giornal. bot. Italiano, 



