Phanerochaete australis Jülich, 1980

Gorjón, Sergio P. & Jesus, Maria Aparecida De, 2012, Some new species and new records of corticioid fungi (Basidiomycota) from the Brazilian Amazon, Phytotaxa 67 (1), pp. 38-54 : 49

Phanerochaete australis Jülich

Basidiome resupinate, membranaceous, white to isabelline when young, or cream to pale brown when old, hymenial surface smooth or slightly tuberculate, margin abrupt. Hyphal system monomitic, all hyphae with simple-septa, subicular hyphae thick-walled, 4–7 µm in diam., not encrusted, subhymenial hyphae thinwalled, 2–3.5 µm in diam. Cystidia more or less fusiform, with a tapered or obtuse apex, not acute, 40–55 × 9–12 µm, distinctly thick-walled, walls thickened up to 3 µm, hyaline, usually smooth or encrusted only in the apical part. Basidia clavate, 20–25 × 3–4 µm, with four sterigmata, simple-septate at the base. Basidiospores narrowly ellipsoid, 4–5.5 × 2–2.5 µm, smooth, thin-walled, IKI- ( Fig. 13 ).

The species is easily distinguished by the thick-walled cystidia with a variable encrusted apical part, small basidiospores, and simple-septate hyphae.

Specimens examined: — BRAZIL, Amazonas, Presidente Figuereido, Uatumã Biological Reserve , on fallen trunk, 29 May 2009, leg. M.A. Jesus, LPM 5892; Amazonas, Manaus, Adolpho Ducke Forest Reserve , 27 Jan 2008, on dead wood, leg. M.A. Jesus, LPM 3729; Manaus, INPA Campus, Bosque da Ciência , on decayed wood, 18 Jun 2007, leg. M.A. Jesus, LPM 342; Roraima, Alto Alegre - Amajari, Maracá Ecological Station , 27–30 Sep 2008, on dead trunks, leg. M.A. Jesus, LPM 4444, 4519, 4522 .

Figures

FIGURE 13–16. 13. Phanerochaete australis. 14. Phanerochaete sp. 15. Trechispora aff. nivea. 16. Vararia aff. rugosispora. a. Basidiospores. b. Basidia. c. Cystidia. ch. Hyphal cords. cr. Crystals. di. Dichohyphae. g. Gloeocystidia. h. hyphae. la. Lamprocystidia. sh. Subicular hyphae.