362 AGARICINI. 



Bolbitius. The pilei are commonly very irregularly shaped from mutual pressure. 



Very caespitose, very fragile. Spores ferruginous. 



In woods and on sawdust. Frequent. July-Oct. 



Name — vScop, water ; </)tAos, loving. Moisture-loving, watery. -Fr. Hym. 

 Eur. p. 333. S. Mycol. Scot. n. 440. Agaricus hydrophilus Bull. t. 511. 

 Fr. Mouogr. i. p. 427. B. &f Br. n. 1126. C. Hbk. 71. 413. Saund. of 

 Sm. t. 24. A. stipatus Be7-k. Eng. Fl. v. p. \\2>^ partly. 



2. B. Boltonii Fr. — Pileus yellow becoming pale, slightly 

 fleshy, at first conical, viscous, at first ev'en, then with the mem- 

 branaceous margin sulcate, the dcwke}' disc somezuhat dep7'essed. 

 Stem attenuated, becoming yellow, at the first Jioccidose with the 

 fugacious cortina. Gills somewhat adnate, light yelloiu then be- 

 coming livid-fuscons. 



Spores brown-fuscous. Pileus at length withering and becoming like paper. 

 Distinct from B. fragilis in the cortina being manifest wheii young, in the 

 darker disc of the pileus being depressed, and in the gills being somewhat ad- 

 nate and light-yellozu-livid then becoming fuscous. 



On dung. Uncommon. May-Sept. 



Spores subsph?eroid-ellipsoid, 14x8 mk. K ; 7x5 mk. IV. P. Name — 

 after Bolton. Fr. Hym. Eur. p. 333. Mouogr. i. p. 471. Berk. Out. p. 182. 

 C. Hbk. n. 481. 5. Mycol. Scot. n. 441. Agaricus Bolt. t. 149. 



3. B. fragilis Fr. — Pileus 5 cent. (2 in.) broad, liglit yellow, 

 then becoming pale, somewhat membranaceous, almost pellucid, 

 conical then expanded, somewhat umbonate, smooth, viscous, 

 striate ronnd the margin (which is often crenulated). Stem 7.5 

 cent. (3 in.) long, 2 mm. (i lin.) or little more thick, fistulose, 

 attenuated upwards, naked., smooth (and without a manifest veil), 

 yellow. Gills attenuato-adnexed, almost free, \^w\.x\zos^, yellow 

 then pale cinnamon. 



Spores ferruginous. Thinner than B. Boltonii, he, very fragile, rapidly 

 withering. 



On dung. Common. June-Sept. 



Spores subsphaeroid-ellipsoid, 14-15x8-9 mk. K. 'Ssme— fragilis, fragile. 

 Fr. Mouogr. i. p. 471. Hym. Eur. p. 334. Berk. Out. p. 182. C. Hbk. ?i. 

 482. 5. Mycol. Scot. n. 442. Hoffm. Ic. t. 21. f. 2. A. equestris Bolt. t. 65. 

 Sow. t. 96. 



4. B. titubans Fr. — Pileus 2.5 cent, (i in.) or less broad, mem- 

 branaceous, ovato-campanulate when young, even, ihtn fiatte?ied 

 and split, diaphanous, slightly viscid, the evened disc light yellow, 

 the paler margin plicate or rufescent-striate. Stem 5-7.5 cent. 

 (2-3 in.) and more long, scarcely 2 mm. (i lin.) thick, fistulose, 

 equal, even, shilling, yellowish. Veil none. Gills adnexed, dis- 



