352 FUNGUS-FLORA. 



** Gills free from the stem. 



Pilosace. — Volva and ring both absent. 



Agaricus. — ( = Psallloia, Fr.) ring on stem present; volva 

 absent. 



Chitonia. — Volva at base of stem present ; ring absent. 



PSATIIYKA. Fries, (figs. 13 and 15, p. 351). 



Pileus submerabranaceous, coiiical or campanulate, then 

 expanded, margin at first straight and jiressed to the stem ; 

 stem central, polished, rather cartilaginous and fragile, hol- 

 low ; gills purplish or brownish, as are also the spores ; veil 

 absent or only universal and iloccose or fibril lose. 



Agaricus, subgen. Psafhijra, Fries, Epicr., p. 231 ; Cke., 

 Ildbk., p. 213; Fries, Hym. Eur., p. 304. 



Slender, fragile, hygrophanous. There are a few tough 

 species analogous to the tough species of Psilocyhe. The 

 genera included in the Melanosporae are distinguished by 

 the gills being pale or grey at first, then black, and not 

 brown or purplish. 



Veil universal, fibrillose, or entirely absent. Pileus sub- 

 membranaceous, conical or campanulate, margin at first 

 straight and pressed to the stem. Corresj^onds to Myccna, 

 Nolanea, and Galera. Closely allied to Psailiyrella, from 

 which the present is distinguished by the brown spores 

 (not black) and the brown or purplish gills. All the 

 species are terrestrial or grow on trunks, slender, hygro- 

 phanous. (Fries.) 



that of the pilous ; nat. aizo of a small specimen ; — Fig. 7, spores of 

 same ; highly mag. ; — Fig. 8, Stropharia melasperma, section showing the 

 adnate gills and ring on the stem ; nat. size ; — Fig. 9, llypholoma hi/jio- 

 xunthus; small specimen nat. size; — Fig. 10, JTyplwloma oedlpus, entire 

 fungus ; nat. size; — Fig. 11, Fnilocijlie iidiii^, entire specimen ; nat. size ; — 

 Fig. 12, section of same, sliowing adnate gills; nat. size; --Fig. 1:5, 

 Psathyra gyroflcxa, gronp of phmts; nat. size; — Fig. 14, lliipJioloma 

 oerf/j>M8, section of pileus ; nat. size; — Fig. 1.5, I'mthyra urticaecol a : nut. 

 gizc; — Fig. IC, Ili/pholoma suJilaforHiuK, basidium and spores; higiily 

 mag. ; — Fig. 17, Strojiliaria scmiijIoLata, section ; half nat. size. 



