152 AGARICUS. 



Omphalia. Among dead leaves. Coed Coch, 1876, &c. Oct. 



Name i!Swp, water; ypa/x/xij, a line. With watery streaks. Fr. Monogr. i. 

 p. 179. Hym. Eur. p. 154. Icon. t. 71. B. & Br. n. 1643. Letell. Ic. t. 

 605. C. Illust. PI. 239. Bull. t. 674. 



323. A. umbilicatus Schaeff. Pileus 2.5 cent, (i in.) broad, 

 /few/when moist, the disc becoming somewhat fuscous, whitish 

 when dry, somewhat membranaceous, at the first deeply umbili- 

 cate, otherwise convexo-plane, even, smooth. Stem 2.5-5 cen t 

 (1-2 in.) long, 2-4 mm. (1-2 lin.) thick, cartilaginous, fistulose^ 

 equal, here and there flexuous, twisted or incurved, somewhat 

 rooted or cohering with villous down at the base, even, silky - 

 striate with white fibrils at the apex. Gills at first shortly^ then 

 deeply decurrent, crowded, thin, unequal, whitish. 



B. Pileus 5 cent. (2 in.) broad, becoming yellow-livid, rather plane, de- 

 pressed at the disc. Stem 2.5-4 cent. (1-1% in.) long, not rooted, remarkably 

 cartilaginous. Gills shortly decurrent. The habit is different, but there are 

 no distinguishing characters. In pine woods. 



Somewhat caespitose. Very hygrophanous. Pileus at length infundibuli- 

 form. There are many similarly coloured forms of Clitoc. Orbiformes distinct 

 in the fibrous stem, in the pileus not being at the first deeply umbilicate, and 

 in the gills being scarcely decurrent. 



In woods among moss. Perth, 1876. Autumn. 



Name umbilicus, navel. With a small circular depression. Schceff. t. 207. 

 Fr. Monogr. i. p. 179. Hym. Eur. p. 155. B. & Br. n. 1644. S. Mycol. 

 Scot. n. 190. 



324. A. maurus Fr. Pileus 2.5 cent, (i in.) or a little more 

 broad, fuliginous when moist, livid when dry, somewhat mem- 

 branaceous, convex, deeply umbilicate, smooth, hygrophanous, 

 striate when moist, even, silky shining when dry. Stem 2.5-5 

 cent. (1-2 in.) long, scarcely 2 mm. (i lin.) thick, remarkably 

 cartilaginous, somewhat horny, rigid, fragile, at first flocculoso- 

 stuffed, smooth, fuliginous-blackish. Gills much attenuated at 

 both ends, very acutely and deeply dec2trrent t arcuate, very 

 crowded, shining white. 



Very distinguished by its deep umbilicus, but by the broad border being 

 everywhere regularly deflexed. In a similar habitat a younger or poorer form 

 occurs : pileus firmer, not striate ; gills adnato-decurrent, little arcuate. A. 

 atratus differs in the even pileus, tough stem, and scarcely crowded and not 

 truly decurrent gills. 



On lawns and in moist places. Coed Coch. 



Fries gathered it in marshy burnt places among charcoal. Spores ellipsoid 

 or ellipsoid-sphaeroid, even, 5-6 x 3-4 K. Name Maurus, a Moor, swarthy. 

 From the dusky colour. Fr. Monogr. i. p. 180. Hym. Eur. p. 156. Icon. t. 

 73. /. 2 var. B. & Br. n. 1645. C. Illust. PL 287. 



