Helicobasidium purpureum

Helicobasidium purpureum
Helicobasidium purpureum causing violet root rot on carrots
Scientific classification
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Pucciniomycetes
Order: Helicobasidiales
Family: Helicobasidiaceae
Genus: Helicobasidium
Species:
H. purpureum
Binomial name
Helicobasidium purpureum
Pat. (1885)
Synonyms

Corticium sanguineum var. lilacinum Quél. (1888)
Helicobasidium brebissonii (Desm.) Donk (1958)
Hypochnus purpureus Tul. (1865)
Protonema brebissonii Desm. (1834)
Rhizoctonia asparagi Fuckel (1870)
Rhizoctonia crocorum (Pers.) DC. (1815)
Rhizoctonia medicaginis DC. (1815)
Rhizoctonia rubiae M.J. Decne. (1837)
Rhizoctonia violacea Tul. & C. Tul. (1851)
Sclerotium crocorum Pers. (1801)
Stypinella purpurea (Tul.) J. Schröt. (1887)
Thanatophytum crocorum (Pers.) Nees (1816)
Tuber parasiticum Bull. (1791)

Helicobasidium purpureum is a species of fungus in the subdivision Pucciniomycotina. Basidiocarps (fruit bodies) are corticioid (patch-forming) and are typically violet to purple. Microscopically they have auricularioid (laterally septate) basidia. Helicobasidium purpureum is an opportunistic plant pathogen and is one of the causes of violet root rot of crops and other plants. DNA sequencing suggests that it is a complex of more than one species. The species has a conidia-bearing anamorph in the Tuberculina persicina complex that is a parasite of rust fungi.