- Onnia tomentosa
-
Onnia tomentosa 
Scientific classification Kingdom: Fungi Phylum: Basidiomycota Class: Basidiomycetes Subclass: Incertae sedis Order: Hymenochaetales Family: Hymenochaetaceae Genus: Onnia Species: O. tomentosa Binomial name Onnia tomentosa
(Fr.) P. Karst., (1889)Synonyms Onnia tomentosa is a species of fungus in the family Hymenochaetaceae commonly known as the woolly velvet polypore. It is frequently found in coniferous forests at higher altitudes, often growing in large groups, rather rare at lower altitudes. It is a plant pathogen, and causes tomentosus root rot, primarily in spruce.[1] It was formerly known as Inonotus tomentosum (Fr.) Teng until molecular phylogenetic analysis led to major revisions in the classification of the Hymenochaetaceae.[2]
Contents
Description
The cap is flat when young, with a blunt, rounded and yellowish-white margin, later with a slightly depressed centre and contoured in a wave pattern towards the rim, which has a rather sharp edge when old; covered in felt which is grey when young and rusty brown when old, up to 10 cm in diameter. The stem is short and thick, dark brown to almost black. The flesh is hard and fibrous, ochre brown under the cap surface.
Similar Species
Coltricia perennis is very similar, but has a weakly circularly zoned, bare cap. The flesh of the cap is stained uniformly.
References
- ^ Ryvarden, Leif; Gilbertson, Robert L. (1986). North American polypores. Oslo, Norway: Fungiflora. ISBN 0-945345-06-2.
- ^ Wagner, T Fischer M. (2002). Proceedings towards a natural classification of the worldwide taxa Phellinus s.l. and Inonotus s.l., and phylogenetic relationships of allied genera. Mycologia 94(6): 998-1016.
- E. Garnweidner. Mushrooms and Toadstools of Britain and Europe. Collins. 1994.
External links
Categories:- Plant pathogens and diseases
- Hymenochaetales
- Fungi of North America
- Agaricomycetes stubs
- Plant disease stubs
Wikimedia Foundation. 2010.
