llev. M.J. Berkeley on British Fungi. 343 



*269. Agaiicus caymeo-tomentosus, Batsch. Ag. carnosus, Bolt, 

 On the stump of an old tree hanging over the rivulet immediately 

 below the waterfall in Hestercombe Park, Som., Dec. 1838, Rev. 

 T. Hugo ; King's CliiFe, Aug. 1843. 



270. Ag. Leightoniij n. s. Sessilis; pileo primum oblique 

 conico umbrino, demum plumbeo furfuraceo setulis intermixtis ; 

 strato superiore gelatinoso ; lamellis crassiusculis alutaceis di- 

 stantibus basi subfurcatis leviter undulatis ; interstitiis vix reticu- 

 latis. Montford Bridge near Shrewsbury, Dec. 1, 1841, Rev. 

 W. A. Leighton. 



Pileus 5 lines broad, at first cyphellseforai, obliquely conical, 

 umber-brown, gradually becoming paler, at length of a pallid 

 lead-colour, furfuraceous, especially behind, where there are a few 

 bristles ; flesh consisting of two distinct strata, of which the upper 

 is gelatinous and of the colour of the pileus, the lower white. Stem 

 none. Gills of a pallid tan colour, thickish, distant, undulated, 

 obscurely wi'inkled at the base, but the interstices can scarcely be 

 said to be reticulated ; sporophores with short spicules. 



This species, of which I can find no account, belongs to the 

 same section as Ag. mastrucatus and algidus. Ag. ponticola is 

 analogous, but it belongs to the dark-seeded series. 



Plate IX. fig. 1. a, Ag. Leightoniij nat. size ; h, section of do. ; c, sporo- 

 phores with their spicules. 



271. Ag. petasatusj Fr. Ep. p. 142. In Mr. Marshall's wine- 

 vault at Hitchin, immersed for about two inches in saw-dust, with 

 the base of the stem resting on the bare brick, Jan. 20, 1843. 



An excellent drawing of this noble species was kindly com- 

 municated to me by Mr. Isaac Brown, but unfortunately without 

 any description or specimen. It accords, however, so closely with 

 the characters given by Fries, that I have no hesitation in refer- 

 ring it to his Ag. petasatics. The only point of difference is that 

 the border of the pileus is not, strictly speaking, membranaceous. 

 That others may have an opportunity of judging, I have thought 

 it best to give a figure. 



Plate IX. fig. 2. a, Ag. petasatus, nat. size ; b, section of do. 



272. Ag. pholideus, Fr. Syst. Myc. p. 219. In wood , King's 

 Cliffe. My plant is clearly that figm'ed by Bulliard under the 

 name of Ag. psammocephalus. 



273. Ag. vervacti, Fr. Ep. p. 197. Near Bromley, Kent, 

 Mr. G. Sparkes. 



274. Ag. semiorbicularis, Bull., Fr. Ep. p. 197. A very com- 

 mon species in rich pastures, often confounded wifh Ag. virosus. 



275. Marasmius urens, Fr. Ep. p. 373. Bristol, H. 0. Ste- 

 phens, Esq. 



