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AGARICUS TUBERosus.
Tuberous Agaric.
C la ss a n d O k d d r CRYPTOGAMIA FUNGI, Linn N a t . O r d . F U N G I, Juss.
De Cand. &c.
Div. L e u c o s p o r u s C o l l y b ia , Eriei.—S e c t . III. G y m n o p u s , Pers.
G EN ERIC CHARACTER.
Pileus stipitatus aut latere affixus, subtus lamellis sporiferis rectis simplicibus.
Volva nulla.
Pileus furnished w ith a stem, or fixed by its side, bearing, on the under surface,
straight and simple lamellæ (gills), containing sporules. Volva
(wrapper) none.
S PE C IF IC CHARACTER.
A garicus tuberosus ; alhus, parvus, pileo piano vel subumhonalo, lamellis ad-
natis, confertis, stipite subsolido, irferne suhtomentoso, luhcribus innato.
Ag. white, small, pileus plane, or somewhat umbonate ; gills adnate with
the stem, crowded ; stem suhsolid, somewhat tomentose at the base, and
springing from a tuberous root.
A garious tuberosus. Bull. t. 256— Pers. Syn. p. S f i— Alb. et Sclav. Conspect.
Fung. p. 190— De Cand. FL Franç. v. 2. p. 178 Fjusd. Syn. p. 36.—
Fries, Obs. v. 1 . p. 38—FL Dan. t. I6 l3 .—Fries, Syst. Mycol. v. 1 . p. 133.
— Crev. FL Fdin. ined.
A g a r ic u s amanitæ, Batsch. Flench. Fung. Cont. 1 . p. I 09. f. 93 Pers. Obs.
Mycol. pars 2 . p. 52.
A garicus alumnus. Bolt. Fung. t. 155.
A garicus bulbosus, Schum. p. 307.
A g a r ic u s albus, var. 2 . With. Bot. Arr. ed. 6. v. 4. p. 274.
G ymnopus tuberosus, Cray’s Nat. A rt. v. 1. p. 211.
H a b . In woods, on several of the larger Agarics, when completely black
and decayed; also on the ground, among moss and dead leaves. Woods
at Balmuto, in company with Miss Marianne Boswell. September.
Plant gregarious. Pileus of an inch in breadth, slightly convex, at length
plane, smooth, white or brownish-white, margin extremely thin, even, or
somewhat waved. Cills numerous, adnate w ith the stem, white, narrow,
irregulai-. Flesh none, except in the centre. Slem T-2 inches high, very
slender, subfistulose, smooth, whitish or reddish, more or less flexuose,
downy at the base, and attached to a tuber of a brown or chesnut colour,
supposed by some authors to be a distinct plant of the genus Sclerotium.
A few long white fibres spring from the stem at its union with the tuber.
’ I