198 AGARICUS. 



Entoioma. 434. A. Thompsoiii B. & Br.— Pileus 3 to nearly 5 cent. (iX- 

 2 in.) broad, grey tomentose, plane, adorned with raised radiating 

 ribs which form reticulations in the centre. Stem 4 cent. {i)4 in.) 

 long, about 4 mm. (2 lin.) thick, fibrillose, tomentose, paler than 

 the pileus. Gills broad, flesh-colour. 



The structure seems entirely peculiar to this species, for the ribs are not 

 like those of A. phlebophorus. 



Among grass in plantation. West Farleigh. 



Name — after Dr Thompson. B. b' Br. 71. 1523. C. Ilhist. PL 374. 



III. — NOLANIDEI. 



435. A. clypeatus Linn. — Pileus as much as 7.5 cent. (3 in.) 

 broad, lurid when moist, when dry grey and variegated or streaked 

 Tvith darker spots or lilies, fleshy, campajtulate thefi flattened, 

 umbonate, smooth, fragile; flesh thin, white when dry. Stem 

 almost 7.5 cent. (3 in.) long, 6-8 mm. (3-4 lin.) and more thick, 

 stuffed, at length hollow, wholly Jibrous, equal, round, fragile, 

 lo?igitiidi7ially fibrillose, becoming cinereous, pulverulent at the 

 very apex. Gills roiinded-adnexed, separating-free, 6-8 mm. (3-4 

 lin.) broad, ventricose, somewhat distant, dingy, then red-pulver- 

 ulent with the spores, serrulated at the edge chiefly behind. 



It has occurred in May caespitose ; better developed and solitary in the end 

 of August. 



In woods, gardens, and waste places. Frequent. Spring, 

 Autumn. 



Name — clypeus, a shield. From its shape. Linft. Suec. ji. 1216. Fr. 

 Monogr. i. p. 275. Hyin. Eur. p. 194. Be7-k. Out. p. 144. /. 7, /. 6 (small). 

 C. Hbk. n. 259. Illust. PI. 319. 6'. Mycol. Scot. n. 246. Hussey t. 42. A. 

 phonospermus Bull. t. 544, Bolt. t. 69. Buxb. c. 4. t. 6. 



436. A. rhodopolius Fr. — Pileus 5-12.5 cent. (2-5 in.) broad, 

 hygrophanous, when moist fuscous (young) or livid, becoming 

 pale (when full grown), when dry isabelli7ie-livid, silky-shifiing, 

 slightly fleshy, campanulate when young, then expanded and 

 somewhat umbonate or gibbous, at length rather plane and some- 

 times depressed, yf^r///<7j-^ when yonng, s7nooth wheji full grown, 

 margin at the first bent inwards and when larger undulated ; 

 flesh white. Stem 5-10 cent. (2-4 in.) long, 6-10 mm. (3-5 lin.) 

 thick, hollow, equal when smaller, when larger attenuated up- 

 wards and white-pruijiate at the apex, otherwise smooth, slightly 

 striate, white. Gills adnate then separating, somewhat sinuate, 

 slightly distant, 4-8 mm. (2-4 lin.) broad, white the?t rose-colour. 



