Piptoporellus soloniensis (Dubois) B.K. Cui, M.L. Han & Y.C. Dai, Fungal Diversity

Cho, Hae Jin, Lee, Hyun, Li, Vladimir, Jargalmaa, Suldbold, Kim, Nam Kyu & Lim, Min-Ji Kim and Young Woon, 2018, Six unrecorded macrofungi from the Royal Tombs (Donggureung and Seooreung) of the Joseon Dynasty and Jongmyo Shrine, Korea, Journal of Species Research 7 (1), pp. 1-8 : 6-7

Piptoporellus soloniensis (Dubois) B.K. Cui, M.L. Han & Y.C. Dai, Fungal Diversity 80(1): 343 (2016)

Hierarchy: Basidiomycota, Polyporales , Fomitopsidaceae Specimens examined: KOREA, Gyeonggi-do, Guri-si, Donggureung, 37°36 ʹ 50 ʺ N, 127°07 ʹ 51 ʺ E, 11 Aug 2015, Hae Jin Cho, Young Woon Lim, SFC20150811-40 (GenBank accession No. MF445223 ), on the dead branch of broad-leaved tree; KOREA, Seoul, Jongmyo shrine, 37°34 ʹ 26 ʺ N, 126°59 ʹ 44 ʺ E, 9 Jun 2016, Nam Kyu Kim, Young Woon Lim, SFC20160609-02 (GenBank accession No. MF 445224), on the dead log of Quercus spp .; KOREA, Gyeonggi-do, Guri-si, Donggureung , 37°37 ʹ 15 ʺ N, 127°07 ʹ 33 ʺ E, 12 Aug 2016, Young Woon Lim, SFC 20160812-18 (GenBank accession No. MF 445225), on the fallen branch of broad-leaved tree .

Basidiocarps annual, pileate, solitary, corky, hard corky and light in weight when dry. Pileus 70-200 mm, dimidiate, semicircular, applanate to slightly convex, surface sponge-like when young, warty in age, sometimes slightly zonate near margin, orange white (6A2) to light orange (5A5), partly orange red (8A7) when young. Pore surface yellowish white to cream, pores round to angular or irregular, 3-4 per mm, dissepiments entire.

Hyphal system dimitic, generative hyphae with clamp connections. Generative hyphae in context rare, hyaline, thin-walled, sometimes branched, 2.5-3.5 μm in diam. Skeletal hyphae in context abundant, thick-walled, sometimes branched, 2-6 μm in diam. Generative hyphae in tube hyaline, thin-walled, sometimes branched, 2.5-3.5 μm in diam. Skeletal hyphae in tube dominant, thick-walled, flexuous, 2-3 μm in diam. Cystidia absent. Cystidioles present. Basidia 14.0-17.2-22.4 × 5.6-6.6- 7.6 μm, clavate, 4-spored, clamp connection at the base. Basidiospores 5.2-5.4-5.7 × 3.0-3.1-3.3 μm, Q = 1.43- 1.56-1.67, ellipsoidal to oval, apiculus acute.

Remarks: Piptoporellus soloniensis was misidentified to Laetiporus sulphureus in Korea. However, they can be distinguished by type of attachment to the substratum and basidiospore shape. Piptoporellus soloniensis forms almost solitary basidiocarps and its shape is applanate to slightly convex and has ellipsoidal to oval basidiospore. However, L. sulphureus forms almost imbricate and has a guttate basidiospore shape ( Ota et al., 2009).