364 
MR GPvEVILLE ON THE 
This species is liable to be confounded with Ag. concJiaius 
of BuLLiARD and Jg\ glanduhsus of the same author ; 
from the latter, indeed, it seems only to differ in wanting 
the very curious glandular bodies between the gills. In 
this difference, however, it is constant. All the three spe- 
cies are perfectly innocent. 
Agaricus ostreatus is known in France by the name of 
d'oreille de noiret, and in the Pai/s des Voges by that of 
couvrose. 
Fries, under this plant, refers to a work by Trattinick 
on the Esculent Fungi of Austria, which I regret not find- 
ing in the public libraries of Edinburgh, as I have not yet 
been able to procure a copy from the Continent. 
13. Ag. violaceus, obscure violaceus, pileo margine vil- 
loso, lamellis distantibus, stipite spongioso, intus violaceo- 
cinereo. 
Agaricus violaceus, Linn. Fl. Suec. p. MS.^Hedw.Jil 
Obs, Bot t. 4f,'^Bolt. Fung, t. B^.-^WitJi. Bot Arr. 
ed. 6. V. 4. p. ^eO.—Sow. Fung. t. m.—Hooh Fl. 
Scot. pt. % p. W.'-Fries SysU Mycol v. 1. p. SI 7. 
Grev. Fl. Edin. ined. 
Ag. hercynicus. Vers. Syn, Vung. p. 277. 
CoRTiNARiA violacea, Graifs Nat. Arr. v. 1. p. 628. 
Bluets. 
Has. Woods, and waste grounds in their neighbour- 
hood. 
Dksc. Plant of a dull violet or obscure purple tinge. 
Pileus convex, fleshy, rounded, in old plants some- 
times depressed in the centre, 3-5 inches broad, faint 
violet or violet-brown, colour brightest at the margin, 
where it is also more or less fibrillose. Flesh thick, 
spongy, tinged with grey-violet. Lamellce adnate. 
