CRYPTOGAMIA. FUNGI: Agaricus: ‘Solid and Loose: 
WHITE. 
: ra i 7 ARISE eee epee tr eee fis 
to guard against errors in those who gather it, or in’ those who 
direct it gathered; and as much confusion and many mistakes 
have hitherto existed amongst authors on the subject of this 
very common plant, I shall:now, in addition to\.the particular 
description given of it above, subjoin a list of the figures erro- 
neously quoted as. representing it, pointing out wherein they 
differ from.it. .... 
Ag. mouceron. Bull. 142. This is very unlike our plant, it has 
a very thick and fleshy pileus, its’ gills ‘are extremely 
narrow and numerous, and its stem is thick and short. 
Not to mention that the gills too are fixed to thé stem. 
Ag. lucocephalus, Bull. 428.1. ‘This is a much’ larger plant, 
has a fixed gill, a much thicker, and a brittle stem, but 
the toughness of the stem in our plant is such as is nearly 
_ alone sufficient to distinguish it. 
Battar. 22, C. Not to mention other marks of difference, this 
has a hollow' stem. 
Ag. meHeus. Scheff. 45. This has a fixed gill, and a hollow 
stem. 
Ag. pallidus. Scheff. 50. "This is indeed very unlike ourplant; © 
‘it has a thick fleshy pileus, a thick stem, and decurrent 
ills. : & wee 
Ag. Seen Scheff. 205. \'This has a hollow stem, a pow. 
dered pileus, and a dirty brown gill. 
Ag. collinus. Scheff. 220. This has a hollow stem, otherwise 
it is not much unlike it; but the stem is too thick for 
our plant, and the boss upon the pileus is very peculiar. 
Ag. niveus. Scheff. 232. Differs very. widely indeed, having a 
pileus concave in the centre, a hollow stem, and a very 
decurrent gill. Sonat s : 
Ag. prealtus. Fl. dan. 830. 1. This figure has some general 
- resemblance, and the decurrent gills may be only ap- 
parently so from the turning up of the pileus in the ad- 
vanced age of the plant.. The author howeyer refers to 
Battar. p..46, t. 21. fig. F.and we here find that this isa 
very large species indeed, well agreeing with the trivial 
_ name preaitus, but the figure gives no such idea.» 
Thave referred to Ray Sy. p. 6. 27, for our plant, but.a 
very respectable authority has lately given this species of Ray 
to the Ag. sordiduse I confess that the short character given 
by “Mr. Ray is so imperfect as to admit of various applications, 
ugh his usual sagacity did not desert him when he mention- 
ed its leathery texture. “But this alone would not have been suf- 
ficient, Fortunately he subjoins an English name, Scotch bon- 
hich, those who-.are:intimately acquainted with — 
mets, w 
the habit of the fairy-ring Agaric, will immediately acknow- 
ledge it, sh 2.57) 
ss woe ees ary 
219 
