Hypoxylon fragiforme

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Hypoxylon fragiforme
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Sordariomycetes
Order: Xylariales
Family: Hypoxylaceae
Genus: Hypoxylon
Species:
H. fragiforme
Binomial name
Hypoxylon fragiforme
(Pers.) J.Kickx f. (1835)
Synonyms
  • Sphaeria fragiformis Pers. (1794)

Hypoxylon fragiforme is a multiperitheciate carbonaceous pyrenomycete known from Europe and North America.

Description[edit]

It is saprobic on wood, mostly beech. The semispherical lumps are up to 15 millimetres (58 in) wide and covered with 15–25 bumps in maturity. The flesh is hard and black.[1] Specimens are reddish when young, and they produce orange pigments when mixed with KOH.

Similar species[edit]

Similar species include Hypoxylon howeianum, which can be differentiated microscopically by smaller ascospores. The anamorph of H. fragiforme sits on a fuzzy green subiculum while the anamorph of H. howeianum sits on radiating hyphal cords, reminiscent of a white spiderweb-like structure.[2][3]

Other similar species exist within Annulohypoxylon, Nemania, and Rosellinia.[1]

References[edit]

  1. ^ a b Audubon (2023). Mushrooms of North America. Knopf. p. 77. ISBN 978-0-593-31998-7.
  2. ^ "Hypoxylon fragiforme". pyrenomycetes.free.fr. Retrieved 2024-01-01.
  3. ^ Stadler, Marc; Quang, Dang Ngoc; Tomita, Ayumi; Hashimoto, Toshihiro; Asakawa, Yoshinori (2006). "Changes in secondary metabolism during stromatal ontogeny of Hypoxylon fragiforme". Mycological Research. 110 (7): 811–820. doi:10.1016/j.mycres.2006.03.013. PMID 16876700.