AGAEICINI. 49 



Sect 3. Holopleurus. — pileus dimidiate. 



120. Agaricus (Pleurotus) petaloides. Bull. "Petaloid 



Pleui'otus." 



Ascending ; pileiis fleshy, spatliulate; entire, disc villous, de- 

 pressed : stem compressed, yillous ; gills decurrent, crowded, nar- 

 row, whitisli. — Fr. Epicr.p. 134. Bull. t. 226, 557. Vent. t. 44, /. 

 5, 6. Pers. Ohs. t. 4,/. 1. Eng. Fl. v. p. 72. 



On the ground, amongst grass. Hare. [United States.] 



Gills whitish, tender, decurrent ; stem flat, often channelled, nearly erect ; 

 solitary, stem about 1 in. long, erect. — Puiio/i. Spores •0003 X "OOOlo in. — 

 W. G. S. 



121. Agaricus (Pleuirotus) serotinus. Sclirad. "Yellowish 



Pleurotus." 



Pileus fleshy, compact, viscid ; stem lateral, thick, squamulose, 

 with sooty points ; gills determinate, crowded, yellowish, or pallid. 

 —Spic. p. 140. B. 4- Br. Ann. N.H. 1865, no. 997. Fl.Dan. 

 i. 1293,/. 2. Buxh.x.t.2,f.2. 



On trunks of trees. Jedburgh. Bowood. [United States.] 



Gregarious ; pileus 2-3 in. across, yellowish, or dingy olive, reniform, or 

 obovate, margin at first slightly involute, thenrepaud ; flesh whitish, insipid. 



122. Agaricus (Pleurotus) xnitis. P. '"Kidney-shaped 



Pleurotus."' 



Pileus rather flesby, tough, reniform, even, smooth, growing 

 pale ; stem lateral, compressed, dilated upwards, with little white 

 scales ; gills determinate, crowded, distinct, white. — Fr. Epicr.p. 

 135. Berk. Outl. t. 6. /. 9. Eng. Fl. v. p. 74. Mag. Zool. 4' Bot. 

 no. 48. 



On dead larch. Oct. Scotland. Notts. 



Pileus k in. broad, at length almost sessile; gills distinct from the hori- 

 zontal stem, very close, linear-lanceolate, pallid-whitish. — Frit-i. Firm, 

 tasteless, white, or rufescent. in the young state spathula'e, and the stem 

 quite distinct, the pileus gradually dilates, the stem becomes obsolete, and the 

 pileus reniform, the outer margins meeting, and the one overlapping the 

 other; upper stratum gelatinous. — M.J.B. 



123. Agaricus (Pleurotus) tremulus. SchcEff. " Grey 



Pleurotus." 



Pileus rather fleshy, reniform, dej)ressed, tough, even ; stem 

 marginal, distinct, nearly round, ascending, villous ; gills adnate, 

 detenninate, narrow, distant, grey. — Fr. Epicr.p. 135. Schoeff. t. 

 224: (except Jig. 1.) Sow. 1.24.2. Eng. Fix. p. 14.. 



