CLAYIS AGARICINORi'M. 205 



smooth margin or ragged from the remains of the veil ; substance 

 either compact, spongy, slightly fleshy, or membranaceous ; stem mostly 

 lateral (or wanting), when present, confluent and homogeneous with the 

 hymenophorum ; gills with a sinus or broadly decun'ent tooth. — Hab. 

 Most of the species grow on wood, a few only on the ground. 



Pleurotus corresponds with Claiidopns, Plate II. fig. 15, and Orepi- 

 dotus, Plate III. fig. 22. The species are large, handsome, and 

 polymorphic, but some are small and resupiuate ; they generally appear 

 late in the year, and return, year after year, to the saritfe habitat more 

 frequently than terrestrial fungi : all are harmless and some edible. 

 All become putrid when old, and never coriaceous or woody ; in 

 this they diifer from Lentinits, Faniis, Xerotiis, Trogia, Schizophyllum, 

 and Lenziles, The species figured is Agaricus (PleurotiisJ spongiosus, Fr. 

 Spores •0004." x 'OOOIS". The elongated shape is characteristic of many 

 species of this subgenus. 



Subgenus 7. Collybia, Pr. Epicr. p. 81 (Plate I. fig. 7).— 

 Pileus at first convex, with an involute margin ; stem with a carti- 

 laginous bark, of a diiferent substance from the hymenophorum, but 

 confluent with it; gills adnate or slightly attached (not deciuTent). — 

 Hab. Most of the species are epiphytal. Usually small and tough, 

 lasting far into the winter ; few only are known to be edible, as A. 

 fusipes. Bull, A. esculentus, Widf., etc. Marasmius is closely allied to 

 CoUgbia. 



Collybia corresponds with Leptonia, Plate II. fig. 16 ; Naucoria, 

 Plate III. fig. 23 ; and Psilocgbe, Plate IV. fig. 30. The species 

 figured is A. (Collybia) fusipes. Bull. Spores -0002" X -00013"; the 

 small section shows young plant of A. (Collybia) maculatus, A. and S., 

 to show involute margin of pileus. 



Subgenus 8. Mycena, Pr. Syst. Myc. vol. i. p. 140 (Plate I. fig. 8). 

 — Pileus more or less membranaceous, generally striate, with the 

 margin always straight, and at first pressed to the stem (never involute), 

 expanded, campanulate, and generally umbonate (not depressed as in 

 OmpJialia) ; stem externally cartilaginous, tubular, not stuffed when 

 young, confluent with the hymenophorum, but heterogeneous from it ; 

 gills never decurrent, though some species have a broad sinus near the 

 stem.— Hab. Mostly epiphytal. 



Most of the species are small, beautiful, and inodorous, but some 

 which have a strong alkaline odour are probably poisonous ; none are 

 known to be edible. They appear after rain in summer and autumn. 



