Hymenochaetales » Hymenochaetaceae » Hymenochaete

Hymenochaete rubiginosa

Hymenochaete rubiginosa (Dicks.) Lév. 1846, in Dai, Y.C., Fungal diversity, 45, 131-343 (2010)

Diagnosis: Fruitbody Basidiocarps annual, effused-reflexed, when fresh leathery to hard corky and without odor or taste, when dry woody hard and brittle, light-weight. Pilei reniform or conchate, usually confluent, imbricate, projecting up to 1.5 cm, 4 cm wide and 2 mm thick at base. Pileal surface vinaceous brown to brownish black, velutinate or tomentose, becoming glabrous with age, concentrically zonate and sulcate. Hymenophore surface smooth, sometimes with tubercles, greyish brown to umber-brown; margin yellowish brown, wavy, narrow, up to 1 mm wide. Hyphal structure Hyphal system monomitic; generative hyphae simple septate; tissue darkening but otherwise unchanged in KOH. Context Cortex, tomentum and hyphal layer present. Hyphae varying from hyaline and thin-walled to yellowish and thick-walled, thin-walled hyphae occasionally branched, 1.62.5 μm in diam, thick-walled one rarely branched, more or less agglutinated, interwoven, 1.82.8 μm in diam. Stratified hymenium Hyphae in this layer similar to those in context, yellowish to yellowish brown, thick-walled hyphae dominant, agglutinated, interwoven, 1.82.5 μm in diam. Setae abundant, subulate, dark brown, thick-walled with a narrow to wide lumen, 3585×57 μm; cystidia and hyphidia absent; basidia clavate, with four sterigmata and a simple septum at base, 1117×3.54.5 μm; basidioles in shape similar to basidia, but smaller. Spores Basidiospores oblong-ellipsoid, slightly curved, hyaline, thin-walled, smooth, IKI, CB, (4–)4.35.1(–5.8)×(2.2–)2.53 μm, L=4.68 μm, W=2.65 μm, Q=1.681.88 (n=60/2).

Index Fungorum Number: IF215861

Notes: Hymenochaete rubiginosa has a very wide range (Léger 1998; Parmasto 2001). The hard basidiocarps and the host (oak) are good characters to recognize it in the field (Dai & Niemelä 2006).


Figure 1.  Basidiocarps of Hymenochaete rubiginosa



Figure 2.  Microscopic structures of Hymenochaete rubiginosa. a basidiospores; b basidia and basidioles; c setae; d hyphae from context



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

Dai YC, Niemelä T (2006). Hymenochaetaceae in China: hydnoid, stereoid and annual poroid genera, plus additions to Phellinus. Acta Botanica Fennica, 179, 178.


Léger, J.C. (1998). Le genre Hymenochaete Léveillé. Bibliotheca Mycologica, 171, 1319.

Parmasto, E. (2001). Hymenochaetoid fungi (Basidiomycota) of North America. Mycotaxon ,79,107176.


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"

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