98 AGARICUS. 



Collybia. The colour of the pileus varies fuscous-olivaceous, fuliginous, reddish-brown, 



fuscous-ochraceous, becoming green. It has occurred also wholly shining 

 white. Somewhat membranaceous when smaller. The radiating wrinkles 

 become more manifest the larger it is. Solitary, inodorous, firm, the root 

 fixed by subterranean rootlets. 



On stumps, &c., covered with soil. Common. June-Nov. 



Spores 11x17 mk. W.G.S.; 11x9 mk. W.P. ; 16-17x10-11 mk. B. 

 Name radix, a root. Rooted. Relhan. Fr. Monogr. i. p. 146. Hym. Eur. 

 p. 109. Berk. Out. p. 114. /. 5. / 4. C. Hbk. n. 137. Illust. PL 140. 5. 

 Mycol. Scot. n. 111. Sow. t. 48. Grev. t. 217. Hussey i. t. 15. Krombh. 

 t. 72. /. 26, 27. Paul. t. 97. bisf. 3, 4. 



196. A. longipes Bull. Pileus fleshy, thin, conico-expanded, 

 umbonate, dry, somewhat velvety-viUous. Stem stuffed, tall, 

 attenuated upwards, villous, at length sulcate, with a long fusi- 

 form root. Gills rounded, somewhat distant, white. 



Formerly regarded as a variety of A. radicatus. 

 On stumps, &c. Uncommon. Autumn. 



Pileus and stem often tinted with yellow. M.J.B. Spores sphseroid, 12 

 mk. Q. Name longus, long ; pes, a foot. Long-stemmed. Bull. t. 232. 

 Fr. Hym. Eur. p. no. Berk. Out. p. 114. C. Hbk. n. 138. Illust. PI. 

 201. Hussey i. t. 80. Larb. t. i6./. i. Krombh. t. i.f. 31 a smaller form. 



197. A. platyphyllus Fr. Pileus 7.5-10 cent. (3-4 in.) broad, 

 fuscous and cinereous then whitish, fleshy-membranaceous, thin, 



fragile, soon flattened, obtuse, watery when moist, streaked with 

 fibrils. Stem 7.5-10 cent. (3-4 in.) long, 12 mm. ( l / 2 in.) thick, 

 stuffed, soft, equal, fibrilloso-striate, otherwise smooth, naked or 

 obsoletely pruinate at the apex, whitish, shortly and bluntly root- 

 ed at the base. Gills obliquely truncate behind, slightly adnexed, 

 12 mm. ( l /z in.) and more broad, distant, soft, white. 



Odour not remarkable. It inclines towards the Tricholomata in the some- 

 what membranaceous cuticle of the soft stem. 



In woods, among leaves, &c. Rare. Oct. 



Spores 13 x 19 mk. W,G.S. Name TrAaru?, broad ; <vAAo, a leaf. Broad- 

 gilled. Fr. Monogr. i. p. 147. Hym. Eur. p. no. Berk. Out. p. 114. 

 B. &> Br. n. 263, 323. C. Hbk. n. 139. Illust. PI. 128. S. Mycol. Scot. 

 Supp. Scot. Nat. vol. vi. /. 214. Paul. t. 97. f. i, 2. ? Buxb. C. iv. t. 18. 

 A. grammocephalus Bull t. 594. Clusii Pern. gen. viii. Sterb. t. 16. H. 



* A. repens Fr. Pileus more fleshy, depressed ; stem hollow, 

 compressed, pruinate at the apex, with a creeping string-like my- 

 celium. 



It is most distinguished by its white, villous, anastomosing, very much 

 branched mycelium which creeps a long distance in a rooting string-like man- 

 ner. The so-called roots are quite heterogeneous from the stem, not a pro- 



