216 CL.WIS AGARICINOUUM. 



deliquescing. Although the veil may be entirely absent in some species, 

 yet they are so allied that they cannot be well separated. It is, how- 

 ever, difficult to place this subgenus in proper connection with the 

 foregoing, but I consider its nearest ally to be Hi/pJioloma, Plate IV. 

 fig. 29, and the subgenera iu corresponding places on the preceding 

 plates, principally on account of the nature of the veil; and the 

 margin of pileus exceeding the gills as iu Jgaricus (Tricholoma) 

 acerliiis, Bull ; some of the species are, however, allied to Psalliota, 

 Plate IV. fig. 26, and its congeners on the previous plates, with which it 

 agi'ees well in several characters, such as the habitat, manured ground, 

 etc. ; this subgenus (like several others) would probably bear subdivision, 

 which is not at present advisable, yi. phalaiiarum, Pr., is said to be 

 edible. The species figured is Agaricns (PancEolns) separatus, L. 

 Spores -0006" X -0004". 



Subgenus 34. Psathyrella, Pr. Epicr. 237 (Plate V. fig. 84). 

 — Spores black, oval, plain or echinulate ; veil inconspicuous, not in- 

 terwoven, generally absent; pileus membranaceous, striate, margin 

 straight, adpresscd to the stem, not exceeding the gills ; stem confluent 

 with but heterogeneous from the hymcnophorum ; gills adnate or free. 



The species are all very slender, and the only other subgenus with 

 black spores (Panceoliis, fig. 33) is readily distinguished by the charac- 

 ters of the pileus ; it agrees in every point with Fsat/ii/ra, Plate IV. 

 fig. 31, except the colom- of the gills being never brown or purple, 

 and the spores black. It also agTces, more or less, in structure with 

 Mi/cena, Plate I. fig. 8; Nolauea, Thie II. fig. 17; Galera, Plate 

 III. fig. 24, and also appears to be allied to Genus III. Bolbitius, 

 which, however, is at once distinguished by its coloured spores. The 

 species figured is Jgaricus (Psathyrella) disseminattis, P. Spores 

 •0003" X -0002". 



Genus II. Coprinus, Pr. Epicr. p. 241. — Spores black; margin 

 of pileus straight, at first adpresscd to the stem ; stem confluent with 

 or distinct from the hymcnophorum ; gills at first coherent, and 

 sprinkled with a micaceous scurf, soon deliquescing into a black fluid, 

 trama none. — Hab. Fat and rank places, often on dung, but some- 

 times on decaying wood. 



Readily distinguished by its deliquescent habit. 



Genus III. Bolbitius, Pr. Epicr. p. 253. — Spores coloured ; pileus 



