426 



lato-convexus, obtusus vel obtuse-umbonalus, margine fle- 

 xuosus aut subinaequalis, fragilis, 1 — 2 unc. latus, vires- 

 cente-coeruleus, sublividus, fuscescens. Lamellae facile 

 secedentes, subangustae, adscendentes , demum subliques- 

 centes. Slipes 2 — 2£ unc. longus, 2^ — 3 lin. crassus, 

 aequalis, subfragilis, dense fibrillosus, furfuraceus, albo pal- 

 lescens, postea magis fibrillosus, nitidulus. Sporidia ob- 

 scure brunnea. 



Ad truncos fagi subcespitosus. Sept. Oct. 



468. Agaricüs microrhizus n. 



Chor. ess. Pileo membranaceo campanulato laevi 

 sicco subrufo, lamellis adnexis angustis e pallido nigres- 

 cente - brunneis , stipite sericeo albido breviter radicalo. 



Descr. br. Insignis species. Initio totus , praeserttm 

 ad stipitem, pilis brevibus, erectis, luteis, deciduis, ad mar- 

 ginem pilei vero, cortina tenui, floccoso-annulata, fuga- 

 cissima vestitus. Piieus ex ovato- margine inflexo-campa- 

 nulatus, -| — 1 unc. latus, fragilis, particulis submollibus 

 nitentibus tectus, humidus ochraceo vel rufo-brunneus, 

 siccus pallidus. Lamellae facile secedentes, conferlae, te- 

 nues, lineares, albo-marginatae, demum nigrescentes , in 

 humido vix liquescentes. Stipes 2 — 2^ unc. longus, 

 1 — \\ lin. crassus, sursum suballcnuatus , basi incrassa- 

 tus, radice \\ — 3 lin. circiter longa, distincta. Insipidus 

 et inodorus. Sporidia atra. 



In graminosis pinguibus, ad sepes, gregarius, passim. 

 Sept. Oct. 



469. Agaricüs impaticns Fr. 



470. - - tet'givcrsans Fr. 



471. - - vitellinus Pers. flavido- ochraceo -liques- 

 cens. Sporidia obscure-öcbracea. 



472. Agaricüs Boltoni Pers. sporidiis nigrescente- 



brunneis. 



473. - - titubans Bull. 



