37G HyrnenomycetcD, Hydnacefc, Irpex. 



arcte adnata, dentibus '/^ mm. altis, subulatis, valde acutis, ver- 

 sus substratuni multo crassioribus, laxiuscule sparsis, ferrugineis, 

 setulis lividioribus amoene conspersis ; basidiis clavatis minutis, 4 

 sterigmata gerontibus; sporis sphgericis, verrucosis, ferrugineis, 

 3-4 [).. diam. 



[[ab. in ligno corticato versus terram, in Brasilia. — Ab Ibjdno- 

 chcute badia Bres. plane distincta. 



IRPEX Fr. — Syll. VI p. 482, IX p. 213, XI p. 110, XIV p. 205, 

 XVI p. 178, XVII p. 153. 



1. Irpex a!bo-fuscu8 (Pat.) Sacc. et Trott,, Coriolus [Irpex) albo-fmcus 1446 

 Patouill., BuU. Soc. Myc. de Fr., XXIII (1907j pag. 81. — Pileo 

 coriaceo, 3-5 cm. lato, solitario v. imbricato, tenui, reniformi, scu- 

 tatim adfixo, pallide cervino, sulcatulo-zonato, margine recto, in- 

 tegro, acuto; hymenio concolori, ,aculeis rigidis, brevibus, distan- 

 tibus, circulatim dispositis, venoso-connexis obsito. 



ITab. in ligno emortuo, Guinea Africae trop. (Boue). — Poly- 

 sticto albo-cercino proximus, differt prcocipue forma hymenii. 



2. Irpex destruens Petch, Ann. R. Bot. Gard. Peradeniya IV, Pt. V, 1447 

 (1909) p. 3(10. — Resupinatus in plagas latas effusus, dein pileos 

 horizontales tam ad marginom quam in centro plagarum profe- 

 rens; parte resupinata indefinita v. margine lato, albo sterili cin- 

 cta; pileis elongatis v. orbicularibus v. flabelliformibus, tota basi 

 adnatis v. infra contractis confiuentibus v. solitariis stepe imbri- 

 catis usque ad 2 cm. latis; hymenio pallide ochraceo ex dentibus 



4 mm. longia triangulari-compressis formato; sporis non visis. 



Ilah. parasitice ad truncos Theiu sp. lignum flavum reddens, 

 Uda Pussellawa, Ceylon. — Initio albus et mollis dein coriaceus, 

 pallido ochraceus, rubido-tinctus, late ochraceo- zonatus, miiiute 

 tomcntosud et radiatim rugulosus, intus albus, margiuo in sicco 

 curvato. 



3. Irpex Galzini Bres., Fungi gall., Ami. Mycol., VI, (1908) p. 42. 14.18 

 — Lato cffusus, crustacoo-adnatus, albidus, mox stramineus et in 

 vetustis fuscescens, ambitu pruinoso-subfimbriato; e poroso-diX3da- 

 loidoo dentatus, dcntibus bene distinctis, usque ad 4 mm. longis, 

 spathulatis vel subulatis, rarius apico fimbriatis; sporis hyalinis, 

 cylindraceis, curvulis, 4 '/^-5 '/^ * 1-1 '/, ; basidiis clavatis, 12-15 * 



3 '/,-4; hyphis subhymenialibus tonuibus; hyphis contextus tena- 

 cibus, crasso tunicatis, 2 '/^-3 ;j.. cr. 



