352 PDNGUS-FLOEA. 



** Gills free from the stem. 



Pilosace. — Volva and ring both absent. 



Agaricus. — (^Psalliota, Pr.) ring on stem present; voWa 

 absent. 



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



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



Pileus submembranaceous, conical or oampamilate, then 

 expanded, margin at first straight and pressed 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 tiniversal and floccose or fihrillose. 



Aga/ricus, subgen. Psathyra, Fries,, Epicr., p. 231 ; Cke., 

 Hdbk., 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. 



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

 membranaceous, conical or campanulate, margin at first 

 straight and pressed to the stem. Corresponds to Mycena, 

 Nolanea, and Galera. Closely allied to Psathyrella, 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 pileus ; nat. size of a small specimen ; — Fig. 7, spores of 

 same ; highly mag. ;^Fig. 8, Stropliaria melasperma, section showing the 

 adnate gills and ring on the stem; nat. size; — ^Fig. 9, Sijpholoma hypo- 

 soanthus; small specimen nat. size; — Pig. 10, Eypholoma oedipus, entire 

 fungus; nat. size; — Fig. 11, PsUooybe m^ms, entire specimen; nat size; — 

 Fig. 12, section of same, showing adnate gills; nat. size; — Fig. 13, 

 Psathyra gyroflexa, gron-p of plants; nat. size; — Fig. 14, Hyphohma 

 oedipus, section of pileus ; nat. size; — Fig. 15, Fsatlvyra urticaeoola : nat. 

 size;r^Fig. 16, BypkolomJa siMateritius, basidium and spores; highly 

 mag. ; — ^Fig. 17, Stropliaria semigldbata, section; half nat. size. 



