CLAVIS AGARICINORUM. 209 



With the exception of the gills, most of the characters coiTCspond 

 with Entoloma. The odour of the species is more or less mealy ; 

 some, however, are oily, some tasteless, others edible. Clitopilus is 

 closely allied to Clitocyhe, Plate I. fig. 5, and differs from Entoloma 

 precisely as Clitocyhe differs from Tricholoma. Clitopilus agrees moi'e 

 or less with Flammula, Plate III. fig. 21. The species figured is 

 Agaricm (Clitopilm) prunulus, Pers. Spores '00045" X "0002". 



Subgenus 15. Claudopus, subgen. nov. sp. Pleuroti and Crepidoti, 

 Fr. (Plate II. fig. 15). — Spores pink, or pale lilac; stem lateral or 

 none, when present confluent and homogeneous with the hymenopho- 

 rum ; gills sinuate or decun-ent. — Hab. on wood or the gi-ound. 



Claudopus corresponds with Pleurolus, Plate I. fig. 6, and Crepidotus, 

 Plate III. fig. 22, only diflcring in the colour of the spores. Mr. 

 Berkeley's fine species, Agaricus (Pleurotus) euosnius, A. (Crepidotus) 

 bi/ssisedus, v., and other species fall naturally into this subgenus. The 

 spores of A. prunnlus, Pers., are often quite as pale in colour as those 

 of A. euosmus, B., and those of A. popinalis, Fr., are hardly to be dis- 

 tinguished from white. The species figured is A. (Claudopus) euusmus, 

 B. Spores -0003" X -00013". 



Subgenus 16. Leptonia, Fr. Syst. Myc. vol. i. p. 201 (Plate II. 

 fig. 16). — Spores salmon-colour, irregular in shape; pileus less cam- 

 panulate than Nolanea, and never truly fleshy, cuticle always torn 

 into scales, disk urabilicate, and often darker than margin, which is at 

 first incurved ; stem rigid, with a cartilaginous bark, often dark blue, 

 confluent with the hymenophorum, but heterogeneous from it ; gills 

 not decurrent, but often with a small tooth or sinus, separating from 

 the stem, variable in colour, at first dirty white, yellowish, greenish, 

 gi'ey, or blue. — Hab. Drj' hills, and sometimes marshy places, in July 

 and August. 



Most of the species grow in clusters, are small, and of an elegant 

 colour ; most common in rainy seasons. Structurally the same as 

 Collyhia, Plate I. fig. 7 ; Naucoria, Plate III. fig. 23 ; and Psilo- 

 cyhe, Plate lA'^. fig. 30 ; and bears the same relationship to Clitopilm 

 as Collyhia to Clitocyhe. The species figiu-ed is Agaricus (Leptonia) 

 incanus, Fr. Average size of spores "00034". The small sketch, 

 showing incurved margin of pileus, is A. (Leptonia) chalyhceus, P. 



Subgenus 17. Nolanea, "Fr. Syst. Myc. vol. i. p. 204 (Plate II. 

 fig. 17). — Spores salmon-colour; pileus submembranaceous (as in 



E_-. 



