344 AGARICUS. 



Psathyrella. When dry the pileus is soft to the touch. Gregarious, fragile. Very similar 

 to A. corrugis, and there is a variety corrugated. 



Waysides, hedgerows, &c. Common. July-Oct. 



Spores ellipsoid, 13-14x7-8 mk. K.; 5X 12 mk. W.G.S. Name gracilis, 

 slender. Fr. Monogr. i. p. 448. Hym. Eur. p. 313. Berk. Out. p. 176. C. 

 Hbk. n, 447. S. Mycol. Scot. n. 417. Saiind. er" Sm. t. 37. f. i, 2. 



774. A. hiascens Fr. Pileus 2.5 cent, (i in.) high, livid then 

 becoming yellow, membranaceous, conico - campanulate, obtuse, 

 smooth, soon split and opening in furrows (commonly to the 

 middle), the divided margin at length revolute. Stem 7.5 cent. 

 (3 in.) long, 2 mm. (i lin.) thick, fistulose, tense and straight, 

 rigid-fragile^ naked, smooth, whitish. Gills adnate, narrow, 

 linear or somewhat attenuated in front, distinct, distant, whitish 

 then shining black, at length very dead black. 



Spores dead black. In the pileus opening into furrows it has quite the 

 habit of some of the thinner Coprini, but the gills are arid, persistent, not 

 becoming fluid. 



In grassy places and hedges. Rare. 



Name hiasco, to split, gape. Opening in furrows. Fr. Monogr. i. p. 448. 

 Hym. Eiir. p. 314. Berk. Out. p. 176. C. Hbk. n. 448. S. Mycol. Scot. n. 

 418. Bull. t. 552.7. 2. F. G. 



775. A. aratus Berk. Pileus 2.5 cent, (i in.) high, f in. 

 across, bright brown, membranaceous, campanulato-conic, rather 

 acute, deeply sulcate ; flesh of the disc of the same colour as the 

 pileus. Stem 12.5 cent. (5 in.) long, fistulose, thickened at the 

 base, smooth, white. Gills quite free, lanceolate, purplish black. 



Allied iQ\A. hydrophorus Bull., but clearly distinct. 

 Under hedges. Woodnewton. 



Name aro, to plough. Furrowed, sulcate. Berk. Out. p. 176. C. Hbk. 

 n. 449. Fr. Hym. Eur. p. 314. 



776. A. trepidus Fr. Pileus 2.5 cent, (i in.) and more broad, 

 date brown at the disc^ otherwise fuliginous, membranaceous, very 

 fragile, campanulate, obtuse, smooth, even at the disc, otherwise 

 slightly but densely striate. Stem 7.5 cent. (3 in.) long, almost 

 2 mm. (i lin.) thick, fistulose, equal, tense and straight (rarely 

 flexuous), quite smooth and naked, diaphanous, hyaline. Gills 

 adnate, crowded, ventricose, very \h\\\, fuliginous-shining black. 



Spores dead black. 



On moist ground. Hothorpe. 



Spores pruniform, 12 mk. Q. Name trepidus, trembling. From its very 

 fragile nature. Fr. Monogr. i. p. 449. Hym. Eur. p. 314. Icon. 1. 139. /. 2. 

 B. & Br. n. 1956. Pers. Myc. Eur. 3. /. 29. /. i. 



