52 ME. BENTHAM ON LOGANIACEiE. 



punctate than transversely rugose ; while that of O. HooJceriana, 

 Meisn., is distinctly marked between the jfe ribs, with prominent 

 transverse wavy ridges, showing an approach to the peculiar struc- 

 ture which occurs in the lower part of the calyx of G. diosmoides 

 and Drumniondii ; the " calycis tubus polyzonatus " of Schauer's 

 Monograph in the 'Nova Acta Academise Naturae Curiosorum,' 

 where (vol. xix. suppl. 2. tab. 2, A. & B.) this structure is very 

 accurately represented. 



Note on a Fungus found imbedded in the Pens of Cambridgeshire. 

 By the Rev. M. J. Berkeley, F.L.S. &c. 



[Eead February 5th, 1856.] 



Fungi are so rare in a fossil state, if indeed any undoubted cases 

 occur before the post-pleiocene period, that no apology need be 

 made for recording so trifling a matter as the present. Moulds 

 are occasionally well preserved in amber, and a diligent search 

 would probably detect species of other groups amongst the vege- 

 table relics in the London clay. In the Museum at Kew there is 

 a specimen of P olypor us foment arius, Fr., communicated from the 

 Pens of Cambridgeshire by the Bev. Mr. Hailstone, where it 

 occurred with bog^oak, and must have been buried for many 

 centuries. The specimen is so perfect that it shows the peculiar 

 substance of the pileus in admirable condition, both as regards 

 colour and texture. It may be remarked, that the specimen, which 

 is attached by the centre and ungulate, is far more strongly lac- 

 tate than any British individuals which have passed through my 

 hands, and in fact accords perfectly with one which was gathered 

 in Sikkim by Dr. Hooker, and which may be seen in the same 

 oompartment of the Museum. It must have been dependent from 

 some large branch, a situation in which the species seldom if ever 

 occurs in Great Britain, and was probably surrounded by a moister 

 atmosphere, in consequence of the prevalence of extensive forests, 

 than exists at present in the same or neighbouring districts, 



Notes on Loganiacece. By George Bentham, Esq., P.L.S. &c. 



[Read February 5th and 19th, 1856.] 



The group of plants collected under the name of Loganiacecs can 

 scarcely be said to constitute a natural order, but rather one of 



