637 



results of which I shall have the honour of reporting to the Society 

 at a future period. 



David Mooee. 



April, 1846. 



[The foregoing very important paper was illustrated by specimens 

 of potatoes in some of the diiferent stages alluded to by Mr. Moore; 

 and also microscopical drawings of the cellular structure of the pota- 

 to, and the fungus, Botrytis infestans, in different stages of its growth]. 



BOTANICAL SOCIETY OF LONDON. 



April 4, 1846. — Edward Doubleday, Esq., F.L.S., Vice President, 

 in the chair. 



Donations to the Library were announced from the Horticultural 

 Society of Berlin and Mr. W. Pamplin. 



The following specimens were exhibited : — 



1. Dwarf and much branched forms of Gnaphalium minimum, sent 

 by the Rev. G. W. Sandys, as bearing the general appearance of 

 Gnaphalium uliginosum, and at first sight seemingly distinct from 

 both of these species. 



2. Examples of the peculiar Linaria from Bandon, in Ireland, la- 

 belled with the MS. name " Lin aria sepium, Allm.'''' For these spe- 

 cimens the Society was indebted to Professor Allman, who, however, 

 did not add any remarks in explanation of the change of name. They 

 are identical with the Cornish Linaria, described by Mr. Hewett 

 Watson in the ' London Journal of Botany ' under the name of Lina- 

 ria Bauhini. The specimens are so completely intermediate between 

 L. vulgaris and L. repens, in their technical characters, as to have led 

 several botanists into an opinion of their hybrid origin ; and this 

 view is certainly supported by the fact that Hampshire specimens are 

 again intermediate between L. repens and L. Italica (Bauhini and 

 sepium). 



3. Continuation of Mr. Andrew's series of Irish Saxifrages to illus- 

 trate their wide range of variation ; the species exhibited on this oc- 

 casion being the S. Geum and S. hirsuta. From the beautiful series 

 of specimens now in the Society's herbarium, the fact of the Hiber- 

 nian forms including those of the Pyrenees, is placed beyond all 

 doubt or cavil, while the specific identity of S. Geum and S. hirsuta 

 is rendered probable. 



