Rhodonia

Rhodonia is a genus of fungal crust fungi in the family Fomitopsidaceae. The species in the genus are species of brown rot, found in China, Europe, and North America, where it grows on decaying conifer wood.^[1]

Rhodonia
Rhodonia placenta
Scientific classification
Kingdom:	Fungi
Division:	Basidiomycota
Class:	Agaricomycetes
Order:	Polyporales
Family:	Fomitopsidaceae
Genus:	Rhodonia Niemelä (2005)
Type species
Rhodonia placenta (Fr.) Niemelä, K.H.Larss. & Schigel (2005)

Taxonomy

The genus was circumscribed by the Finnish mycologist Tuomo Niemelä in 2005 to contain the species Rhodonia placenta.^[2]

Species

The following species are recognised in the genus Rhodonia:^[3]

• Rhodonia obliqua (Y.L.Wei & W.M.Qin) B.K.Cui, L.L.Shen & Y.C.Dai (2018)
• Rhodonia placenta (Fr.) Niemelä, K.H. Larss. & Schigel (2005)
• Rhodonia rancida (Bres.) B.K.Cui, L.L.Shen & Y.C.Dai (2018)
• Rhodonia subplacenta (B.K.Cui) B.K.Cui, L.L.Shen & Y.C.Dai (2018)
• Rhodonia tianshanensis Yuan Yuan & L.L.Shen (2017)

Description

The fruiting bodies of species of the genus Rhodonia are spread out (effused) on its substrate, poroid, fairly thick, juicy and soft, with a pale rose or white colouring. It has a monomitic hyphal system (containing only generative hyphae), and the hyphae have clamp connections. These hyphae are initially thin-walled but become thick-walled in mature fruit bodies. The spores are cylindric.^[2]