CLAVIS AGARlCIXOltUM. 215 



fugitive colouring, and not edible. Fries divides the subgenus into 

 two groups, the tenacious and the fragile. Psilocybe corresponds with 

 Collybia, Plate I. fig. 7 ; Leptonia, Plate II. fig. 16, and Naucoria, 

 Plate III. fig. 23. The species figured is Agaricm (Psiloci/he) spadi- 

 ceus, Schseff. Spores -0003" X 0002". 



Subgenus 31. Psathyra, Fr. Epic. p. 231 (Plate IV. fig. 31). 

 — Spores dark purple-brown, approaching slate-colour ; veil univei'sal, 

 fibrous, or absent, not forming a ring; pileus subraembranaceous, coni- 

 cal or campauulate, margin at first straight and adpressed to the stem ; 

 stem fistulose, ringless, cartilaginous, fragile, confluent with but hete- 

 rogeneous from the hymenophorum. — Hab. On the ground or rotten 

 wood. 



All are slender and hygrophanous, with fugitive colouring, and 

 closely allied to the fragile species of the last subgenus. Psathyra 

 agrees with Mycena (Plate I. fig. 8j, Nolanea (Plate II. fig. 17), 

 Galera (Plate III. fig. 24), Psathyrella (Plate V. fig. 34). The 

 species figured is Agaricus (Psathyra) cor rug is. Pars. Spores 

 •0005" X -0003". 



Subgenus 32. Deconica, subgen. nov. sp. Psilocybis Fr. (Plate 

 IV. fig. 32). — Pileus thin, plane, at first incurved; veil obsolete or 

 adhering to the margin of pileus, not forming a ring ; stem cartilagi- 

 nous, hollow, confluent with but heterogeneous from the hymeuopho- 

 nim ; gills decurrent. 



The typical species figured is A. (Deconica) physaloides. Bull. ; it is 

 analogous with Oniphalia (Plate I. fig. 9), Eccilia (Plate II. fig. 18), 

 and Tubaria (Plate III. fig. 25). Spores -00034" X -0002". 



Series V. Copeinaeii, Fr. Epicr. p. 234. — Spores Hack. 



Subgenus 33. Pan^olus, Fr. Epicr. 234 (Plate V. fig. 33).— 

 Veil, when present, interwoven, sometimes wanting ; spores black, 

 oval, plain, lemon-shaped, or echinulate ; pileus somewhat fleshy, viscid 

 when moist, shining when dry, not becoming purple or brown, never 

 striate, the margin exceeding the variegated gills. — Hab. Almost all 

 grow on dung, often near towns, in summer and autumn. 



This and the following subgenus differ from all the preceding in 

 their black spores, and occupy an intermediate position between Aga- 

 ricus and Coprinus, agreeing with the latter in the colour of the 

 spores, but joined more properly to the genuine Agarics by the gills not 



