204 AGARICUS. 



Clitopilus. Solitary or gregarious, with a pleasant smell of new meal. 



On downs. Worthing, 1865. Oct.. 



A curious species, probably esculent. B. 6^ Br. Name — fopitia, a cook- 

 shop. Referring to its edible qualities. Fr. Mo7iog7'. i. /. 280. Hym. Eiir. 

 p. 198. Icon. t. 96./. I. B. b' Br. n. 11 14. C. Hbk. n. 268. Illust. PI. 

 485. 



447. A. undatus Fr.— Pileus about 4 cent, (i^ in-) broad, 

 fuliginous cinereous, becoming pale (not hygrophanous) and 

 slightly sill<:y-opaque when dry, slightly fleshy, fragile, deeply wn- 

 bilicate, sometimes infundibuliform, unequal, undulated, without 

 striae. Stem scarcely 2.5 cent, (i in.) long, often very short, al- 

 most 4 mm. (2 lin.) thick, entirely fibrous, hollow, unequal, com- 

 pressed, somewhat attenuated at the base and covered downwards 

 with whitish pubescence. Gills deeply decurrent, not crowded, 

 distinct, 4 mm. (2 lin.) broad, thin, quite entire, dark cijiereous. 



Pileus often somewhat zoned. Odour fiofie. A most distinct species, with 

 the rubiginous spores of Claudopus. 



In open downs. Batheaston, (S:c. Oct. 



Spores subsphaeroid, irregular, subhyaline, 6-8 mk. K.; 6 mk. W.G.S. ; 

 polygonal, 13 mk. Q. Na.me— undo, to swell in waves. Waved. Fr. 

 Mo?ioqr. \. p. 281. Hym. Eur. p. 199. Icoti. t. gS.f. 4. B. &f Br. n. 1000. 

 C. Hbk. n. 269. Illust. PL 486. S. Mycol. Scot. Supp. Scot. Nat. 1885, p. 22. 



448. A. cancrinus Fr. — Pileus 2.5 cent, (i in.) broad, whitish- 

 tan or wholly white, becoming pale, not hygrophanous, slightly 

 fleshy, somewhat niembra?iaceous, at first convex with the margin 

 involute, then rather plane, very irregularly shaped and at length 

 broken into cracks, without striae, rather smooth, but without 

 a cuticle, and therefore h^covamg flocculoso-eve?i., never slightly 

 viscid or zoned ; flesh not scissile, white, hyaline at the gills. 

 Stem curt, scarcely 2.5 cent, (i in.) long, 2-4 mm. (1-2 lin.) thick, 

 white, stuffed or fistulose, sometimes straight, sometimes ascend- 

 ing, round or compressed, equal or when smaller thickened at the 

 apex, smooth. Gills truly decurrent, distant, distinct, broader 

 near the stem, 3 mm. (iX li^i-) broad, rather thick, arcuate when 

 young, straight when the pileus is flattened, white then flesh- 

 colour. 



Inodorous, with the habit of A. sericellus. The white down (mycelium) at 

 the base gathers the soil into a ball. 



In grass fields. Apethorpe. Aug. 



Name — cancer, a lattice, a network of crossed laths. From the chinky 

 appearance of the pileus when broken into cracks. Fr. Monogr. i. p. 281. 

 Hym. Eur. p. 199. Ico7i. t. 95./. 4. B. b' Br. 71. 11 15. C. Hbk. 71. 270. 

 Illust. PI. 501. 



