PHANEKOGAMIA. 427 



Cauvet, M. — Notice organographique sur quelques plantes de la 

 famille des Cactees. Eec. Mem. de Med. Ser. iii. v. 67. (Bull. 

 Soc. Bot. viii. 641). 



Observations on the structure of the ligneous system, leaves, 

 epiderm, the fruit, &c. of Opuntia. 



Etudes sur le role des raciaes dans I'absorption et I'excretion. 



Strasburg, 1861. 



M. Cauvet is of opinion that rootlets in perfect health do 

 not excrete poisons absorbed by the plant; it is through the 

 leaves, by their death and fall that poisons are eliminated. 

 With regard to the elective power of the so-called spongioles, 

 he behoves that if salts be absorbed in unequal proportions it is 

 owing to their special action on the tissue of the absorbing 

 extremity. 

 Chapmajs-, a. "W. — Flora of the Southern United States. 1860. 



Leitneria (Myricaceae, gen. uov.) is described. 

 Chatln", Ad. — Sur la Structure anatomique des Petales comparee a 

 celle des Feuilles; une consequence physiologique des faits ob- 

 serves. Bull. Soc. Botan. viii. p. 22. 



The colouring matter of petals is stated to be contained in 

 epidermal cells {Calendula, Dahlia, &c.) ; and with regard to its 

 condition, whether liquid or granular, as well as seat, it may be 

 generally affirmed that what is the rule in the case of leaves is 

 exceptional in petals. 



Excursion botanique dirigee en Savoie et en Suisse. Bull. 



Soc. Bot. 1861. viii. pp. 127, 210, 302, 333. 

 A list is given of the species collected. 

 Sur un cas extraordinaire de monstrosite (?) offert par le 



Cytinus hypocistis. Bull. Soc. Bot. viii. 196. 



The ovaries, destitute of parietal placentas, were almost 

 entirely occupied by a pendulous, pedicellate, cellular mass, the 

 import of which is left doubtful. 

 Sur les plantes des vieux Chateaux. Bull. Sqc. Bot. viii. 359. 



Of the plants naturalized on and about old edifices, M. Chatin 

 distinguishes at least two principal groups. The one, and older, 

 represented by Diantlms Caryophyllus and Salvia Sclarea he 

 terms the group of the Middle- Age period ; the other, charac- 

 terized by Aegopodium Podagraria and Eruca sativa, the group 

 of the Eenaissance period. Under the former he includes Fceni- 

 culum vulgare, Silyhum Marianum, Leonurus Cardiaca, Satureia 

 montana, Sfc; as additional species under the latter, Petasites 

 officinalis. Iris foetidissima, Corydalis lutea, Ruta graveolens, 

 Sedum dasyphyllum, Atropa, ^c. 



The Thorn Apple and Henbane apparently characterize a 

 more recent epoch, as also JJrtica pilulifera, Aspemgo procum- 

 bens, Sfc. Notes are added upon the localities of the species and 

 the uses to which they were applied, 

 N. H. R.— 1862. 2 G 



