fungí GUARANITICI 73 



— 1 mllm. lat.), marginalibus vix minoribus; stipes tuberculi- 

 formis, irregularis (5 mllm. long. — 4-5 mllm. crass.), píleo 

 concolor, albo-farctus, laxe breviterque bispidulus. 



62. Favolus laciniatüs Lev. — 1. c. p. 203. 



Hab. Ad truncos putrescentes cariosos in sylva virgínea Caá- 

 guazú, Jan. 1882 (sub num. 3366). 



Obs. Coespitosus, magnus ; pileus (15-20 cent, diam.) carnosus, 

 flaccidus, (in sicco) lentas, quandoque dimídiato-horizontalis, 

 quandoque excentrice infundibulíformis, grosse inciso-laciniatus 

 laciniis elongato-obovatis V. subspathulatis, albus (in sicco alu- 

 taceus), laevis, basin versas subfarinosus v. pruinulosus, ce- 

 terum glaber, margine fuscescente (in sicco), undulato-repando, 

 denticulato-eroso, recto, tenui-membranaceo ; lamellae latiu- 

 sculae (2 mllm. lat.), basi crassiascalae, acie membranaceae, 

 integerrimae, rhombice reticulato-connexae, alveolis sabaequa- 

 libus (4-7 mllm. long. — 1-1,5 mllm. lat.), albescentibus, in 

 sicco fuscescenti-fulvis, in stipite excéntrico v. laterali, obconi- 

 co mammiforme, brevissimo, concolore, glabro v. pulverulento, 

 basi truncato-adnato decurrentibus. 

 Species, ut videtur, Favolo flaccido Fr. perquam affinis. 



63. POROTHELIUM bombycinüm Speg. (n. sp.) 



Diag. Effusum (3-5 cent. long. — 1-2 cent, lat.), candidum, 

 moUiter gossypino-compactíusculum, tenue (0,30-0,35 mllm. 

 crass.), margine undulato^ repando-sinuoso v. lobato, deter- 

 mínate, subattenuato, ubique matrice arete adnatum ; verrucu- 

 lae laxae, concolores, gossypino-compactiusculae, immersae, 

 primo globosae, clausae (150 diam.), dein ore rotundato-aperto 

 superficem attingente (50-70 diam.), intus glabrae, ceraceo- 

 albae; basidia minutissima (5-7 X 2-2,5), hyalina, clavulata, 

 ápice 3-sterigmatofora ; sporae non visae. 

 . Hab. Ad culmos dejectos putrescentes bambusaceae cujusdam, in 

 sylvis prope Carapeguá, 24 Jul. 1883 (sub num. 3893). 



Obs. Species pulchella, distinctissima, láctea, verrucis discretis, 

 cyphelleformibus mox dignoscenda; senescendo oblíteratur ac 

 pallide fulva evadit. 



