Hymenochaetales » Hymenochaetaceae


Inonotopsis Parmasto 1973, in Dai, Y.C., Fungal diversity, 45, 131-343 (2010)


Diagnosis: Basidiocarps annual, resupinate. Pore surface greyish brown to brown. Hyphal system monomitic; generative hyphae simple septate; tissue darkening in KOH. Basidiospores ellipsoid, hyaline, thin-walled, smooth, IKI, CB–. On angiosperm and gymnosperm wood, causing a white rot. Inonotopsis differs from Inonotus sensu stricto by its hyaline and thin-walled spores. These characters are present in the genus of Onnia, which, however, has sessile to stipitate basidiocarps and robust setae. The phylogenetic position of Inonotopsis is very close to Phellinidium (Kotl.) Fiasson & Niemelä, as shown by Wagner & Fischer (2002) with rDNA sequence data.

Index Fungorum Number: IF17853

Type species: Inonotopsis subiculosa  (Peck) Parmasto 1973, in Dai, Y.C., Fungal diversity, 45, 131-343 (2010)


Inonotopsis exilispora (Y.C. Dai & Niemelä) Y.C. Dai 2000

Inonotopsis subiculosa (Peck) Parmasto 1973



Dai, Y.C. (2010). Hymenochaetaceae (Basidiomycota) in China. Fungal diversity, 45, 131-343.

Wagner, T., & Fischer, M. (2002). Classification and phylogenetic relationships of Hymenochaete and allied genera of the Hymenochaetales, inferred from rDNA sequence data and nuclear behaviour of vegetative mycelium. Mycological Progress, 94,93104.


About Basidiomycota

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


Supported by 

Thailand Science Research and Innovation (TSRI)

project entitled:

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

(Grant No. DBG6280009)


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  • The State Key Lab of Mycology, Institute of Microbiology, Chinese Academy of Sciences, No.3 1st Beichen West Rd., Chaoyang District, Beijing 100101, P.R. China

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