Trametes neovillosa Fernandes & Gugliotta, 2023

Fernandes, Mariana & Gugliotta, Adriana De Mello, 2023, Trametes neovillosa (Polyporaceae), a new name for the later homonym Trametes pavonia (Hook.) Ryvarden, Phytotaxa 591 (1), pp. 80-82 : 80-81

Trametes neovillosa Fernandes & Gugliotta , nom. nov.

Basionym: Boletus pavonius Hook. , Synopsis Plantarum 1: 10, 1822.

MycoBank No.: MB 842811

Replaced name — Trametes pavonia (Hook.) Ryvarden. Norw. J. Bot. 19:237, 1972, nom. illeg., non Trametes pavonia (Berk.) Fr. , Nova Acta Regiae Societatis Scientiarum Upsaliensis Ser. 3, 1: 98, 1851.

Etymology: — Neo means new in Latin. The name refers to morphological similarity of this species to Trametes villosa (Sw.) Kreisel (1971:83) .

Notes: — Trametes neovillosa is characterized by the dimidiate to flabelliform basidiomata, upper surface persistently tomentose and concentrically zoned; hymenial surface white to pale ochraceous with circular pores, 5–6 per mm; the basidiospores are hyaline, ellipsoid, 5.1–6.0 × 3.2–4.1 µm.

Morphologically, Trametes neovillosa is similar to T. villosa (described from Jamaica), that also has dimidiate to flabelliform basidiomata and upper surface persistently tomentose and concentrically zoned. However, T. villosa has the hymenial surface white to cream, with age becoming brown to pale brown, with angular and often slightly elongated radially pores, 1–3 per mm (larger than Trametes neovillosa ), and larger cylindrical basidiospores, 4.8–7.1 × 2.3–3.3 µm.

T. pavonia (≡ Daedalea pavonia ) has been considered a synonym of Trametes elegans Spreng. (Fr.) (1838:492) ( Ryvarden, 1977, Zmitrovich et al. 2012). According to Ryvarden (2016), Trametes elegans and T. neovillosa (as T. pavonia ) are widespread and common in tropical America. Morphologically, these species can be easily distinguished, mainly by the arrangement of the hymenophore, which is strictly poroid in T. neovillosa and often lamellate or, sometimes, with sinuous pores to daedaleoid in T. elegans . Furthermore, the distinction of T. neovillosa and T. elegans has been confirmed by phylogenetic data ( Justo & Hibbett 2011, Carlson et al. 2014, Olou et al. 2020).

Recent studies indicate that Trametes elegans is a polyphyletic group including at least four different species ( Justo & Hibbett 2011, Carlson et al. 2014, Olou et al. 2020). According to Carlson et al. (2014), although no clear segregation of morphological characters among these species was observed, geographical distributions are correlated with phylogenetic relationships. They recovered three lineages, named T. elegans I, T. elegans II and T. elegans III. T. elegans II is widely distributed in Central and South America and the Caribbean region with only one isolated from southeastern Asia ( Philippines). Trametes elegans originally was described from Guadeloupe ( Fries 1821), therefore this clade was considered the true Trametes elegans . T. elegans I occurs exclusively in continental USA, and Trametes aesculi (Fr.) Justo (2014:744) was the name proposed for a member of this complex from continental USA. T. elegans III is predominant in southeastern Asia and Oceania with only one isolated from South America ( Venezuela); the name adopted for this clade was Trametes repanda (Pers.) Justo (2014:744) , described from Rawak Island (Western Papua, Indonesia). Recently, the name Trametes palisotii (Fr.) Imazeki (1952:57) was re-established for the species previously known as T. elegans in tropical Africa ( Olou et al. 2020).

Therefore, these data suggest that Daedalea pavonia , described from Sri Lanka, probably doesn’t even belong to Trametes elegans sensu stricto, and further studies may clarify if Daedalea pavonia could represent another species in the genus or be a synonym of T. repanda .

The examined specimens of T. elegans from South America are characterized by basidiomata annual, sessile, with a short base in the substrate insertion point, dimidiate to flabelliform; the upper surface is glabrous and the hymenial surface is lamellate or sometimes with daedaleoid pores. The basidiospores are cylindrical, hyaline, smooth and thin-walled, with dimensions ranging from 5.5–7.0 × 3.1–3.5 µm.

Although illegitimate, Trametes pavonia has been frequently used in taxonomic works and in the diversity checklist for Tropical America ( Baltazar & Gibertoni 2009, Gomes-Silva et al. 2010, Lombana-Alvarez et al. 2016, Ryvarden 2016, Leonardo-Silva et al. 2020). Full description of Trametes neovillosa is provided by Fidalgo & Fidalgo [1966, as Coriolus pavonius (Hook.) Murrill (1907:25) ] and Ryvarden (2016, as Trametes pavonia ).

Material examined:— Trametes neovillosa — BRASIL. Amazonas: Ponta Negra, January 1963, Eiten, G., Eiten, L.T. & Felippe G.M. (SP71447!); São Paulo: Cananéia, Ilha do Cardoso. February 1987, Capelari, M.; R.L.K. Maziero & Castro, M.I.S.M.C. (SP211784!); São Paulo: Mogi-Guaçu, Fazenda Campininha, March 1993, Capelari, M.; Okino, L.K.; Gugliotta, A.M. & Dialetachi, L.L.G. (SP250902!); São Paulo: Parque Estadual Fontes do Ipiranga , February 2020, Gugliotta, A.M. & Westphalen, M. (SP513094!) . PERU. La Merced , Junin, March 1968, Pavlich, M. (SP102150!) . VENEZUELA. Bolívar, Hato la Vergareña , October 1954, Wurdack, J.J. & Guppy , N.G. L. (SP107596!) .

Material additional examined:— Trametes elegans — BRASIL. São Paulo: São Paulo, mata da USP, November 1989, Fonseca, M.P. (SP250685!); São Paulo: Itapecerica da Serra, March 1997, Gugliotta, A.M. & Capelari, M. (SP251208!); São Paulo: São Paulo, Parque Estadual da Cantareira, Núcleo Engordador , March 2012, Motato-Vásquez, V. (SP445399!) . COLOMBIA. Caño Unguyá: Vaupes, Rio Apopovis , September 1952, Fidalgo, M.E.P.K. (SP62134!) . PERU. Dept. Loreto: Prov. Ucayli , March 1966, Fidalgo, M.E.P.K. (SP102172!). Trametes villosa — BRASIL. São Paulo: São Paulo, mata da USP, January 1991, Fonseca, M.P. (SP250673!); São Paulo: São Paulo. Parque Estadual Fontes do Ipiranga, November 1997, Gugliotta, A.M. & Roberto, A.F. (SP251231!); São Paulo: São Paulo, Parque Estadual da Cantareira, Núcleo Engordador , November 2012, Motato-Vásquez, V. (SP445627!) . JAMAICA. Ravine Montagne Flora of Marie Galante , May 1960, Proctor , G.R. (SP94878!).