not at first." Many points in this description suit both A. semi-globatus and A. Fanisecii, neither of which 

 resemble the Champignon, and where French people committed errors, as the poor emigi'ants did at Win- 

 chester, it was most likely this Mousseron d'eau, (of wliich the botanical identification is doubtful) wliich 

 they beheved they had found, and not the Mousseron Godaille. At any rate, it is well to repeat Mr. Berkeley's 

 caution, that people cannot be too careful in the use of dark-gihed Agarics ; none such can be the esculent 

 and agreeable A. oreades. 



Order Hymenomtcetes. Tribe Pileati. 



AGARICUS DRYOPHILUS, ^.//.V"./. 



Oak-leaf Agaric. 



Series Leucosporus.^ 



Sub-genus Clitocybe.^ Sub-division Chondropodes.^ 



Spec. Cliar. A. dryophilus. Pileus from one to two inches broad, at first hemispherical, then expanded, 

 plane, or even depressed in the centre, sub-carnose, yellowish, tinged with brown or red, growing paUid, smooth, 

 thin, tender, tough when dry. Gills pale straw-colour, very numerous, fine and close, broadest behind, neai-ly free 

 or sinnato-adnexed, with a small sub-decmTent tooth, entire or serrate. Stem two or three inches high, from a 

 quarter to a tliird of an inch thick, smooth, shining, equal, fistulose, inflated at the base; sometimes twisted, lax, 

 and tortuous, when tufted; of *he same colom- as the pQeus but growing rufous at the root. Spores white. Odour 

 fungoid ; taste nauseous, quality highly pernicious. 

 Agakicus dryophilus, BuUiard, Fries, Bei-keley, Greville, Soicerby, Withering, Persoon. 



Hob. Among oak leaves, and in pine forests ; from May to October. 



This is a very variable Agaric, and it is almost impossible to make a description of it more than 

 generally appropriate to the different specimens collected at jDeriods of dry or wet weather, among summer 

 mosses or autumnal leaves. One circumstance, however, will invariably serve to distinguish it from A. orea- 

 des; the close fine disposition of the gills, so different from the distant arrangement vrith broad irregular 

 spaces between them, which those of the esculent Tungus display. Another point to be remarked is, that 

 the stem of A. dryophilus is one of the best examples of the truly fisttdose or piped kind; while A. oreades 

 has a sohd stem, the outer bark of wliich, indeed, is tougher than the shining satiny internal fibres, but 

 still it is essentially solid, never hoUow except, like a tree, in extreme old age and decay. Our Champignon 

 too, though very brown when water-soaked, or dried, has never at any time the slightest tinge of red about 

 it ; the stem in particular is pure white while fi-esh, and acquires only a brownish hue in drying ; but Dr?/o- 



' From XfUKor, white, and o-Trdpor, seed. Spores white. 



2 From xXiVof, a steep or declivity, and Kv^rj, a head, pointing to the shape of the pileus when young. Veil 

 none. Pileus convex when young, not umbihcate, at length often depressed or infundibuhform. GOls unequal, 

 jruceless, unchangeable, tough, variously fixed or free. Spores white. 



^ From xovSpos, a cartilage, and woiis, a foot. PUeus tougli, dry. GiUs nearly free, close. Extenial coat of 

 the stem sub-j?artiIaginous. 



