Piedraia hortae

Piedraia hortae
Black piedra nodules on hair
Black piedra nodules on hair
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Dothideomycetes
Order: Capnodiales
Family: Piedraiaceae
Genus: Piedraia
Species:
P. hortae
Binomial name
Piedraia hortae
(Brumpt) Fonseca & Leão (1928)
Synonyms[1]
  • Trichosporon hortae Brumpt (1913)
  • Trichosporon guayo Delamare & Gatti (1928)
  • Piedraia sarmentoi M.J.Pereira (1929)
  • Piedraia venezuelensis Brumpt & Langeron (1934)
  • Piedraia surinamensis C.W.Dodge (1935)
  • Piedraia javanica Boedijn & Verbunt (1938)
  • Piedraia malayi Green & Mankikar (1950)

Piedraia hortae is a superficial fungus that exists in the soils of tropical and subtropical environments and affects both sexes of all ages.[2] The fungus grows very slowly, forming dark hyphae, which contain chlamydoconidia cells and black colonies when grown on agar. Piedraia hortae is a dermatophyte and causes a superficial fungal infection known as black piedra, which causes the formation of black nodules on the hair shaft and leads to progressive weakening of the hair.[3] The infection usually infects hairs on the scalp and beard, but other varieties tend to grow on pubic hairs. The infection is usually treated with cutting or shaving of the hair and followed by the application of anti-fungal and topical agents. The fungus is used for cosmetic purposes to darken hair in some societies as a symbol of attractiveness.[citation needed]

  1. ^ Cite error: The named reference urlMycoBank: Piedraia hortae was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Schwartz2004 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Figueras1997 was invoked but never defined (see the help page).

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