21G CLAVIS ACAIUCINOKUM. 



into scales, disk urabilicatc, and often darker tlian margin, which is at 

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

 confluent with the hyinenophoruni, 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, 

 grey, or blue. — Hab. Dry hills, and sometimes marshy places, or 

 stumps, 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 

 Collybia, Plate C. fig. 7 ; Nancoria, Plate CII. fig. 23 ; and Psilo- 

 cybe^VX&tQ cm. fig. 30 ; and bears the same relationship to ClUopikts 

 as Collybia to Clitocybe. The species figured is Agaricus (Leptonia) 

 incauus, Fr. Average size of spores "OOOSJ!". The small sketch, 

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



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

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

 Leptonia and EcciUci), subcampanulate, and papillose, not umbilicate, 

 at first straight and pressed to the stem, not incurved as in Leptonia; 

 stem cartilaginous, fistulose, sometimes stuffed, confluent with, but hete- 

 rogeneous from the hymenophorum ; gills not decurrent. — Hab. Gene- 

 rally terrestrial, growing on grassy hills, and in wet places iu woods. 



The species are thin, slender, inodorous, and brittle (but some very 

 tenacious), growing in summer and autumn. Nolanea corresponds 

 with Mycena, Plate C. fig. 8; Galera, Plate CII. fig. 24; Psalhyra, 

 Plate cm. fig. 31; and FsatJiyrella, Plate CV. fig. 34. Fries, in 

 his ' Monographia,' has not reversed the sequence of Nolanea and 

 Eccilia to make them accord with Omphalia and Mycena amongst the 

 Leacospori. Leptonia, Nolanea, and Eccilia are very nearly allied by 

 many characters. The species figured is Agaricus (Nolanea) pasctius, 

 P. Average size of spores "0003". 



Subgenus 18. Eccilia, Fr. Syst. Myc. vol. i. p. 207 (Plate CI. fig. 

 18). — Spores salmon-colour; pileus generally umbilicate, disk houio- 

 gcneous, margin at first incurved, as in Leptonia; -stem hollow, confluent 

 with, but heterogeneous from the hymenophorum ; gills truly decurrent. 

 Corresponds with Omphalia, Plate C. fig. 9 ; Tabaria, Plate CII. 

 fig. 25, and Beconica, Plate CIII. fig. 32. The species figured is 

 Agar lens (Eccilia) Parkensis, Fr., for specimens of which I am in- 

 debted to Mr. C. E. Broome. Average size of spores "00027". 



