Fomitiporia apiahyna (Speg.) Robledo, Decock & Rajchenb.

da Silva, Maria Aparecida, de Jesus, Maria Aparecida, Peres, Rafaela Saraiva & Sales-Campos, Ceci, 2021, Notes on Fomitiporia Murrill in Amazon region: a list of species and new records, Check List 17 (2), pp. 323-331 : 325

Fomitiporia apiahyna (Speg.) Robledo, Decock & Rajchenb. (s.l.)

Material examined. BRAZIL – Amazonas • Manaus, Adolph Ducke Forest Reserve ; 03°00′27″S, 059°53′ 59°59′W, 92 m alt.; 23.IV.2016; M.A. Silva leg.; INPA 286222 .

Identification. This species is easily identified as F. apiahyna s.l. by the following characters: basidiome perennial, ungulate ( Fig. 2A) with hymenophoral surface and pores circular to angular, 5–7 per mm ( Fig. 2A); context woody, yellowish brown ( Fig. 2A); hyphal system dimitic, with generative hyphae hyaline, thin-walled, septate ( Fig. 4A); skeletal hyphae abundant, yellowish, thick-walled, nonseptate ( Fig. 4A); basidiospores dextrinoid, subglobose, hyaline, thick-walled, 6–7.5 × 5.8–6 μm ( Fig. 4A).

Remarks.. Fomitiporia apiahyna is a worldwide species, but curiously there are few records in Neotropics ( Ryvarden 2004). Alves-Silva et al. (2020b) corroborated this hypothesis and found that the geographical distributions of species in this complex are extremely important in their classification. Fomitiporia apiahyna (sensu stricto) is not part of the clade of species in the Amazon region; it is restricted to Araucária Moist Forest ecoregion. Our specimens have a basidiospores that are larger on average (6–7.5 × 5.8–6 μm) than in F. conyana (5–5.5 × 4–5 μm), F. murrillii (5–6 × 5–6), and F. nubicola (5–6 × 5–6). Thus, we classify our specimens as F. apiayna s.l., as F. apiayna s.s. is not part of the clade containing Amazonian species. Our specimens may rep- resent a distinct lineage and potentially a new species in the complex, but phylogenetic studies are needed to prove this hypothesis.

Distribution. Fomitiporia apiahyna s.l. was reported from southern Brazil, Argentina, Ecuador, Panama, Costa Rica, Mexico, and Florida ( Amalfi and Decock 2013). According Amalfi and Decock (2013) there is one record in the Amazon region, in French Guiana. However Alves-Silva et al. (2020b) had shown that this record was actually F. conyana .