122 BOTANICAL INFORMATION. 
tique et descriptive des environs de Paris. This new 
genus the authors consider allied to Siler and Agasyllis; but 
it differs remarkably from both by the irregularity of its 
inflorescence ; by the remarkable development and eonforma- 
tion of the disk; by the extreme tenuity of all the striz or 
nerves of the pericarp; and also by the very slender resi- 
niferous vitte entirely buried under the epicarp. The 
genus Agasyllis is distinguished from Diserneston by its 
bladdery fruit. The authors regret that Aucher-Eloy has 
furnished no information respecting the mode of collecting the 
Gum ammoniacum ; so that nothing further is known than 
that which is related by Olivier. The gum is spontaneously 
produced by simple exudation, forming little masses in the 
axils of the umbels. "The quantity existing on the specimens 
is too small to render it possible to submit the substance 
to chemical analysis. Tab. 41 represents Vicia Aucherii, 
n. sp.; t. 42 A., Cicer pinnatifidum, n. sp. (under which a 
Conspectus Specierum is given); t. 42 B., C. pimpinellifo- 
lium, n. sp. ; t. 43 A., C. Montbretii, n. sp. ; t. 43 B., C. Son- 
garicum, Steph. ; t. 44. C. spiroceras, n. sp. ; t. 45. C. traga- 
canthoides; t. 46. Pisum Aucherii, n. sp.; t. 47. Chesneya 
(Lindl. Legumin.) rytidosperma, n. sp. ; t. 48. C. vaginalis, 
n. sp.; t. 49. Primula Aucherii, n. sp.; t. 50. Tetrapterygium 
(F: and M. Crucifere) stylophorum, J. and S. (glastifolium, 
Boiss.) ; t. 51. Eunomia Montbretii, n. sp. ; t. 52. Hutch- 
insia chrysantha, n. sp.; t. 53. A., Meniocus grandiflorus, 
n. Sp.; t. 53. B., M. filifolius, J. and S. (Alyssum menio- 
coides, Boiss.); t. 54, Quercus castaneefolia, C. A. M.; 
t. 55, Q. Persica, n. sp. ; t. 56. Q. Cypria, n. sp.; t. 57. Ay 
Q. Trojana, n. sp. ; t. 57. B., Q. calliprinos, Webb. 
As soon as tbe 7th Livraison arrives we shall continue our 
notice; and shall now only further observe that the Maps 
are of the most beautiful description, exquisitely executed, 
and showing the routes of the different botanical travellers 
from the time of Rauwolf (1573) to the present day. 
