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 caespitose. 

 On the ground. East Dereham. 



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

 natiis, alternate. From the striae. Fr. Hym. Eur. p. 327. B. & Br. n . 

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



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

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

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

 never floccose or split, but revolute and stiiate, 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 le?igth 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. atramentariiis, M.J.B. Name deliquesce, 

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

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

 t. 558. / i. Klotsch. Fl. Bor. t. 376. 



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

 * Cyclodei. Stem annulate or vol'vate. 



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. (\% 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 spherical, apiculate, 8-9 mk. Q. Name after J. Henderson. Berk. 

 Out. p. 180. /. 24. f. 8. C. Hbk. n. 470. i'. Mycol. Scot. n. 433. Fr. Hym. 

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

 /.i. ' 



