Haploporus bicolor 2021

Haploporus bicolor Y.C.Dai, Meng Zhou and Yuan Yuan, sp. Nov.2021

MycoBank:MB838450 

Holotype:  BJFC 031625

Morphological description :

Asexual morph:Differs from other Haploporus species by the distinct different colors between the pore surface and the tubes, no-dextrinoid skeletal hyphae, small pores mea- suring 5-7 per mm, the presence of fusiform cystidioles and abundant dendrohyphidia, and narrow basidiospores measuring 10.5-11.9×4.5-5 μm.Bicolor (Lat.):referring to the species having different colors between the pore surface and the tubes.Basidiocarp annual, resupinate, difficult to separate from the sub strate, soft corky and white to cream when fresh, become buff when bruised, corky when dry, up to 5 cm long, 2 cm wide and 0.7 mm thick at the center.Pore surface cream to buff with peach tint when dry; sterile margin distinct, white, up to 1 mm; pores round to angular, 5–7 per mm; dissepiments thick, entire. Subiculum clay buff, corky, up to 0.4 mm thick. Tubes clay buff, corky, up to 0.3 mm long. Generative hyphae infrequent, hyaline, thin-walled, 1-1.5 un in diam; skele- tal hyphae dominant, distinctly thick-walled with a narrow lumen, frequently branched, flexuous, interwoven, 1-2 μm in diam. Cystidia absent; cystidioles present, fusiform to ventricose, hyaline, thin-walled, 13.5-22 × 4-6.5 μm. Basidia barrel-shaped to pear-shaped with 4-sterigmata and a basal clamp conncction, 14 25 × 6 11.5 μm; basidioles dominant, pear-shaped, slightly smaller than basidia. Dendrohyphidia abundant, hyalinc, thin-walled. Some irregular-shaped crystals present among tube trama.

sexual morph :not observed.

Culture characteristics: Hyphal structure-Iyphal system dimitic; generative hyphae bearing clamp connec tions, hyaline, thin-walled; skeletal hyphae dominant, thick-walled, frequently branched, IKI-, C'B+; tissucs unchanging in KOII.Generative hyphae inconspicuous, hyaline, thin-walled, 1-2.5 μm in diameter (diam); skeletal hyphac dominant, distinctly thick-walled with a narrow lumen, frequently branched, flexuous, interwoven, 1-2.5 μm in diam.

Habitat:

Distribution: China, Yunnan, Wenshan, Xichou County, Xiaoqiaogou Forest Farm

GenBank: its MW465684 ; nlsu MW462995.

Notes:

Reference: [1] Zhou, M. ,  Dai, Y. C. , Josef Vlasák, &  Yuan, Y. . (2021). Molecular phylogeny and global diversity of the genus haploporus (polyporales, basidiomycota). Journal of Fungi — Open Access Mycology Journal, 7(2), 96.

Basidiocarps of Haploporus bicolor (Holotype). Scale bar = 1.0 cm. Figure 3. Basidiocarps of Haploporus bicolor (Holotype). Scale bar = 1.0 cm.

Microscopic structures of Haploporus bicolor (Holotype). (a). Basidiospores. (b). Basidia and basidioles. (c). Cystidioles. (d). Dendrohyphidia. (e). Hyphae from subiculum. (f). Hyphae from trama.