fungí argentini 127 



inde lolbato-fissus, aentiusculus, intus valde revolutus; lamellse 

 cartilagineo-membranaceae, utrinque acutse, sordide méllese v. 

 jubro-fuliginesev acie acuta lobata, Mnc inde grosse ac acutissi- 

 me irregulariter laciniato-dentata ; sporse non visee ; stipes elon- 

 gatus, fusiformis, deorsum longe attenuatus, tenacissime matrici 

 adnatus, solidus, lignosus, fusco-fuligineus velvividefulvescens, 

 basin yersus adpresse ac dense tomentoso-velutinus ac obscnrius 

 coloratus, medio (in part. incr.) levis v. rugosus vel squamulo- 

 sus, superne ob lamellarum ultimam decurrentiam striato-sub- 

 costulatus. 



Pileus et stipes intns albi ab bymenioplioro discreti (5-(8-9)" 

 12 cent, lat.) ; totus fungus 10-(20-25)-30 cent. alt. ; stipes 8- 

 (15-20)-2-5 cent. long. ; 1,5-2 cent, crass. (in part. centr.) v. 

 0,6-1 cent. (ad. bas.); lamellse 1-1, 5 cent. lat. Species distinc- 

 tissima magnitudine, teiiacitate, ac dentatura lamellarum ab 

 ómnibus descriptis longe recedens. 

 Hab. In trabe putrescente in cloaca prope locum dictum los Corra- 

 les (Bonaria), Maj. 1880, leg. G-. Guevara. 



15. Xerotus conicus Sp. (n. sp.). 



Diag. G-regarius v. coespitosus; pileusl ongiuscule conicus, crassus, 

 carnoso-sublignosus deorsum in stipite abrupto contracto, sur- 

 sum truncato-explanatus, orbicularis v. reniformis, centro um- 

 bilicato-depressus; color superne atro-fuscus v.olivaceus,in parte 

 bymeniifera melleo-fulvus ; lamellae distantes, crassae, acie re- 

 pando-obtusa, subplicaeformes, basi sepius binae connatae v. 

 sursumfurcatae rarius simpliceSjfulvo-melleae; stipes perbrevis 

 subobliquus v. lateraliter incurvus, cylindricus ssepe ramosus v. 

 2-3 connati, raro simplex, ater, scrupulosus a pileo constrictione 

 ssepius divisus ; caro pilei in bymeniophoro ac stipite continua, 

 alba, compactissima, coriácea. 



Totus fungus 1,5-2 cent. alt. ; pileus 1-1,5^ cent. long. 1 

 cent, crass. v. lat. ; stipes 5-8 mili. long. 3-4 mili, crass. Species 

 distinctissima et pulcbella sed tantum exemplaribus exsiccatis 

 inventa, idcirco ulterius inquirenda. 



Hab. In trunco cavo vetusto Salicis Humboldtianae en Barracas 

 del Sur, Jun. 1880, leg. Cl. J. Cisneros. 



16. ScHizoPHYLLUM COMMUNE Grev. — Fr. Hym. Eurp. p. 492. 



