356 AGARICINI. 



Coprinus. even, very smooth, discoid. Stem 7.5-10 cent. (3-4 in.) long, 

 hollow, attenuated from the thickened base where it is 8 mm. 

 (4 lin.) thick, smooth, becoming pale. Gills adnate, linear, cine- 

 reous then black. 



Somewhat casspitose. 



On the ground. East Dereham. 



Striped with alternate striae broad and narrow, M.J.B. Name alter- 

 natus, alternate. From the striae. Fr. Hym. Ear. p. 327. B. & Br. n. 

 1957. Agaricus Fl. Dan. t. 1961. f. i. 



19. C. deliquescens Fr. Pileus 7.5-10 cent. (3-4 in.) broad, 

 livid-fuliginous, membranaceous, ovato - campanulate then ex- 

 panded, smooth, but papillate ivith minute points on the disc, 

 never floccose or split, but revolute and striate, the striae broad, 

 but not deep. Stem 10 cent. (4 in.) long, 4-8 mm. (2-4 lin.) thick, 

 hollow, corticate, equally attenuated upwards, smooth, shining 

 white. Gills free, at length remote from the stem, very crowded, 

 flexuous, very narrow, only i m. (% lin.) broad, lurid-blackish. 



Slightly firm. 



On stumps and among fallen leaves. Frequent. Aug. 



Sometimes confounded with C. atramentarius, M.J.B. Name deliquesce, 

 to dissolve. Deliquescing. Fr. Monogr. i. p. 463. Hym. Eur. p. 327. 

 Berk. Out. p. 180. C. Hbk. n. 469. S.MycoL Scot. n. 432. Agaricus Bull, 

 t- 558. /. i. Klotsch. Fl. Bar. t. 376. 



II. VELIFORMES. Pileus very thin, without a pellicle, &c. 

 * Cyclodei. Stem annulate or volvate. 



20. C. Hendersonii Berk. Pileus 8-12 mm. (4-6 lin.) broad, 

 apex brownish shaded into cinereous towards the margin, at first 

 cylindrical then ovali-campanulate, at length plane, smooth, striate 

 half-way up. Stem 4 cent. (i l / 2 in.) long, not 2 mm. (i lin.) thick, 

 filiform, hollow, attenuated upwards, at length smooth, with a 

 small erect entire ring. Gills free, rather distant, narrow, black. 



Pileus minutely granulated under a lens, margin folded. Gills powdered 

 with the black spores, the extreme margin white. Looks like a small annulate 

 A. disseminatus. Extremely tender. 



On hotbeds and horse-dung. Rare. Feb.-Sept. 



Spores sphserical, apiculate, 8-9 mk. Q. Name after J. Henderson. Berk. 

 Out. p. 1 80. t. zOf.f. 8. C. Hbk. n. 470. S. Mycol. Scot. n. 433. Fr. Hym. 

 Eur. p. 329. Agaricus Berk. Eng. Fl. v. p. 122. Pers. Myc. Eur. 3. /. 26. 

 /. i. 



