TAB. CLXXXI.
AGARICUS quercinus. Linn. Sp. Pl. 1644. With. v. 4. 307.
Most common on old oak ports, railing, or cut stumps; being least frequnet on the trees themselves. These plants are attached by a broad baee or back, often assuming the appearance of a Boletus on the under side, being full of such peculiar cells as to have caused a doubt of the genus. One specimen frequently unites in itself the three genera, Agaricus, Boletus and Hydnum: being lamellated, porous, and with points. The pileus is more or lels rugged, but not at all hairy. Substance very much like cork, clumsy, but often formed with the lamellæ elegantly dropping into labyrinths, folds, Sec.
TAB. CLXXXII.
AGARICUS beulinus. Linn. Sp. Pl. 1645. With., v. 4. 305.
Aneater plant than the last, growing fometimcs in similar situations, and frequently on stumps of the Birch (Betula), whence I suppose its name. It is attached by a broad base or back, and in a young state is truly a Boletus, but in maturity acquires very distinct lamellæ, which finally become extremely thin, stiff, somewhat wrinkled, and folded. The shorter lamellæ end abruptly at right angles. The pileus is tomentose, variegated with different browns, greatly resembling B. veriscolor. Those growing on the birch mostly assume a woolly whitish surface like plush.
TAB. CLXXXIII.
AGARICUS alenus. Linn. Sp. Pl. 1645.
I am glad to have an opportunity, by favour of the Rev. Mr. Watts, F.L.S. to present my botanical friends with a figure of the true Agaricus alenus., with some certainty of its being of English growth. The above gentleman found the elegant small united specimen, No. 1. on a beer-barrel in his cellar at Athill, Norfolk. Some small ones I gathered in London, by favour of Colonel Patterson, F.L.S. but the box they grew upon
