74 Hymenomycetffi, Agaricacese, Ochrosporce, Bolbitins. 



PLUTEOLUS Fr. — Syll. V p. 859, XI p. 60, XIV p. 141, XVI 

 pag. 102. 



1. Pluteolus aleuriatus Fr. — Syll. V p. 869. — Var. gracilis Peck 291 



Rep of t.he State bot. 1900, pag. 149. — Pileo submembranaceo, 

 fragili, subplano, viscirlo, margine profunde striato, hygrophano, 

 intense griseo-brunneo, in sicco pallido, 10-24 nim. lato ; lamellis 

 tenuibus, stipatis, constrictis, subventricosis, liberis, albidis dein 

 ferrugineis ; stipite nliformi, nequali, cavo, minute pulverulento, 

 superne substriato, niveo albo, 2,5-3,5 cm. longo, 1-2 mm. crasso ; 

 sporis ferrugineis, ellipsoideis, 1-nucleatis, 10-12,5 « 5-6. 

 Ilab. in silvis, Westport, Amer. bor. 



2. Pluteolus glutinosus Clem. Bot. Surv. Nebraska 1901, p. 10. — 292 

 Pileo membranaceo, conico-campanulato dein explanato v. repando. 

 glabro, umbonato, dense mucilaginoso, margine striato, griseo-stra- 

 mineo, marginem versus fuscescenti, 1,5-2 cm. lato ; stipite gra- 

 cili, cavo, lucenti, ajquali, dense fibrilloso-pulverulento, pallide ochro- 

 leuco, apicem versus albo-striato, 3 mm. crasso, 5-10 cm. alto ; 

 lamellis liberis, distantibus, ventricosis, brunneis; sporis ovatis 

 vel ovato-ellipsoideis, levibus, succineis, 13-16 * 10-12. 



Hab. in foliis stercoratis, in silva Octowanie, Nebraska Ame- 

 ricae borealis. 



BOLBITIUS Fr. — Syll. V pag. 1073, IX p. 143, XI p. 74, XIV 

 p. 150. XVT p. 127. 



1. Bolbitius Glatfelteri Peck Bull. Torr. Bot. Cl. 1903, pag. 97. — 293 

 Pilco tenui, conico v. subcamjmnulato, mox expanso, margine. in- 

 curvo, subinde umbonato, glabro, admodum viscido, margine lato 

 striato, albo, centro fiavido v. subfulvo; lamellis confertis, sat an- 

 gustis, subventricosis, liberis, pallidis, demum ferrugineis et pul- 

 verulentis ; stipite ;equali v. sursum leviter tenuato, cavo, supra 

 striatulo, juniore squamuloso v. furfuraceo, demum glabro, nitido 



et pure albo; sporis 12-16^8-10. 



Jlah. gregatim vel caespitosus in fimetis, Missouri et Illinois 

 Amer. bor. (N. M. Glatfelter). — Subaffinis B. sordido Lloyd. 



2. Bolbitius Demangei [QueLj Sacc. et D. Sacc, Pluteolus Demangei 294 

 Quel. Ajssoc. fran^. 1'Avanc. Sc, 19:)1, II partie, p. 495, pl. III, 



i. 5. — Pileo convexo-plano, 3-4 cm. lato, membranaceo, striato, 

 viscitso, fusco-lilacino, margine pallidiore; carne alba, stipitis rosea : 

 lamellis liberis vel subdistantibus, sinuatis, confertis, ochraceo-pal- 



