Phylloporia minuta sp. nov. (Basidiomycota, Hymenochaetales): a remarkable species discovered in a small protected urban area of Atlantic Forest Author Bittencourt, Felipe Laboratório de Micologia, Departamento de Botânica, Universidade Federal de Santa Catarina, Campus Universitário Trindade, CEP: 88040 - 900, Florianópolis, Santa Catarina, Brazil; Author Stürmer, Sidney Luiz Laboratório de Micorrizas, Departamento de Ciências Naturais, Universidade Regional de Blumenau, Rua Antônio da Veiga n. 140, Victor Konder, CEP: 89030 - 903, Blumenau, Santa Catarina, Brazil; Author Reck, Mateus Arduvino Departamento de Biologia, Universidade Estadual de Maringá, Avenida Colombo, 5790, Zona 7, CEP: 87020 - 900, Maringá, Paraná, Brazil. Author Drechsler-Santos, Elisandro Ricardo Laboratório de Micologia, Departamento de Botânica, Universidade Federal de Santa Catarina, Campus Universitário Trindade, CEP: 88040 - 900, Florianópolis, Santa Catarina, Brazil; text Phytotaxa 2018 2018-05-02 348 3 199 210 http://dx.doi.org/10.11646/phytotaxa.348.3.3 journal article 302424 10.11646/phytotaxa.348.3.3 ec53a5f3-793a-4d90-9598-83d12cbfc85b 1179-3163 13708714 Phylloporia minuta Bittencourt & Drechsler-Santos sp. nov. ( Fig. 2 ) MycoBank: MB823358 Diagnosis:—Basidiomata pileate, seasonal, pileus sessile, applanate to ungulate or campanulate, broadly attached, amplectens or pendant, small, up to 16.5 mm wide, 3–7(–8) pores per mm, context with a black line separating an upper tomentum, monomitic hyphal system and pale yellowish broadly ellipsoid to narrowly ellipsoid basidiospores with 4.0–5.1 × 2.8–3.8 μm. Etymology:— minuta (Lat.) : meaning small, referring to the small size of the basidiomata. Type :— BRAZIL . Santa Catarina : Blumenau , Parque Natural Municipal São Francisco de Assis , subtropical lowland broadleaved forest, on living and young stems Doliocarpus schottianus Eichler , elev. 87 m , 26°55’19” S , 049°04’44” W , 15 April 2015 , F . Bittencourt 393 , Holotype ( FURB ! 55088). GenBank® accession number MG264039 . Description:— Basidiomata seasonal to biseasonal, pileate, applanate to ungulate or campanulate; pileus solitary, sessile, broadly attached, amplectens or pendant, with a soft consistency, up to 16.5 mm wide, 7.3 mm thick; pileus surface fibrous, smooth to concentrically sulcate in biseasonal basidiomata, yellowish brown to strong brown (10YR 5/6–8, 7.5YR 4/6, 5/8), azonate; margin acute to round, sterile, concolorous with the pileus surface, sometimes lighter in fresh basidiomata; pore surface very pale yellow to yellow (10YR 5/8, 7/4–6); pores angular, sometimes elongated or fused, 3–7(–8) per mm, (76.3–)95.9–311.3(–362.3) μm diam.; dissepiments entire, thick, (33.4–)55.4–166.8(–301.7) μm thick; tube layer concolours with the pore surface, 0.5–1.4 mm thick; basidiomata in section containing a context and tomentum; context compact, corky, pale yellow, brownish yellow to yellow (10 YR 6/8, 7/6–8, 8/8), 0.4–1.8 mm , with a black line separating the upper tomentum; tomentum loose, spongy, ferruginous brown, concolorous with the pileus surface, 0.4–2.2 mm . Hyphal system monomitic, simple-septate; generative hyphae in the hymenophoral trama thin to thick-walled, pale to golden yellow, (2.8–)3.3–5.1(–7.1) μm wide, lumen (1.2–)1.6–3.3(–3.7) wide, regularly simple-septate; in the context thick-walled, (3–)3.7–5.9(–6.9) μm wide, lumen (1.4–)1.9–4(–4.9) wide; in the tomentum pale to golden yellow, thick-walled, often with collapsed portions, first adpressed, soon erected, loosely interwoven, (2.6–)3.2– 6.7(–7.5) μm wide, lumen (0.8–)1.3–4.4(–5.3) wide, arising from a dark line formed by agglutinated, golden brown, frequently simple-septate and branched hyphae; Hymenium : cystidia not seen; basidia clavate, 16.8 × 6.9 μm (n=1); basidiospores abundant, broadly ellipsoid to narrowly ellipsoid, (3.5–)4.0–5.1(–6.0) × (2.4–)2.8–3.8(–4.0) μm ( x = 4.5 × 3.3 μm, =1.4), thick-walled, with a ventral flattened side, often collapsed in one or more sides, pale yellow, smooth, IKI-, sometimes forming masses of spores in the hymenium. Habitat and distribution:—Hitherto found growing laterally or under thin living young stems of Doliocarpus schottianus ( Dilleniaceae ) near a water stream in a valley covered by subtropical lowland broadleaved forest. So far known only for municipality of Blumenau, Santa Catarina State , southern Brazil . Specimens examined ( paratypes ):— BRAZIL . Santa Catarina : Blumenau , Parque Natural Municipal São Francisco de Assis , subtropical lowland broadleaved forest, on living and young stems Doliocarpus schottianus , elev. 87 m , 26°55’19” S , 049°04’44” W , 15 April 2015 , F . Bittencourt 394 ( SP !) ; ibidem , idem , F . Bittencourt 395 ( FURB ! 55081) ; ibidem , idem , F . Bittencourt 396 ( FLOR ! 63064) ; ibidem , idem , immature specimen, F . Bittencourt 397 ( FURB ! 55083) ; ibidem , idem , F . Bittencourt 399 ( FURB ! 55085) ; ibidem , idem , F . Bittencourt 400 ( FLOR ! 63063) ; ibidem , idem , F . Bittencourt 401 ( SP !) ; ibidem , 12 May 2015 , F . Bittencourt 426 ( FLOR ! 47428) ; ibidem , 29 January 2016 , F . Bittencourt 749 ( FURB ! 49266) .