Polyporales » Polyporaceae


Sparsitubus L.W. Hsu & J.D. Zhao 1980, in Cui, et al., Fungal Diversity 97, 137392 (2019)

Diagnosis: Basidiocarps annual to biennial, effused-reflexed to pileate, hard corky when dry. Pileal surface dark vinaceous gray, indistinctly concentrically zonate, glabrous. Pore surface ash-gray brown when dry; pores developed by the development of an apical pore which isolated and separated each other by a distinct distance, circular; hymenophores among tubes pale gray, subtomentose. Context pinkish buff, hard corky to woody hard when dry, concentrically zonate; a distinct black cuticle present on the pileal surface. Tubes mouse gray, darker than hymenophore among tubes, hard corky when dry. Hyphal system dimitic; generative hyphae mostly bearing clamp connections, sometimes with simple septa; skeletal hyphae dominant, dextrinoid, cyanophilous; contextual tissues unchanged in KOH; tubes and upper surface darkening in KOH. Cystidia and cystidioles absent. Basidiospores broadly ellipsoid to subglobose, yellowish, fairly thick- to thick-walled, asperulate but mostly collapsed when mature, IKI, CB+.

Index Fungorum Number: IF18567

Type species: Sparsitubus nelumbiformis L.W. Hsu & J.D. Zhao 1980, in Cui, et al., Fungal Diversity 97, 137392 (2019)

Notes: Currently, only one species, Sparsitubus nelumbiformis, was recorded in the genus. This species was first described from southern China with unusual morphology (Xu & Zhao 1980). Its pores look like aggregated mini-volcanoesin a shallow basin. A few discussions were made on its generic relationship after its publication (Jülich 1981; Ryvarden 1991; Zhao 1998; Dai et al. 2007).



Cui, B.K., & Li, H.J., & Ji, X., & Zhou, J.L., & Song, J. & Si, J., & Yang, Z.L., & Dai, Y.C. (2019). Species diversity, taxonomy and phylogeny of Polyporaceae (Basidiomycota) in China. Fungal Diversity 97, 137392


About Basidiomycota

The webpage Basidiomycota provides an up-to-date classification and account of all genera of the phylum Basidiomycota.


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Thailand Science Research and Innovation (TSRI)

project entitled:

"Macrofungi diversity research from the Lancang-Mekong Watershed and surrounding areas"

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