Oxneria fallax

Oxneria fallax
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Teloschistales
Family: Teloschistaceae
Genus: Oxneria
Species:
O. fallax
Binomial name
Oxneria fallax
Synonyms[1]
  • Physcia fallax Hepp ex Arnold (1858)
  • Xanthoria fallax Arnold (1881)
  • Xanthomendoza fallax Søchting, Kärnefelt & S.Y.Kondr. (2002)
  • Placodium fallax Hepp (1860)
  • Xanthoria lychnea var. fallax (Hepp) Stein (1879)

Oxneria fallax, also known as the hooded sunburst lichen, is a small yellow-orange to red-orange foliose lichen that grows on bark or rarely on rock or bone.[2] It is found all over the world except very dry areas.[2][3]: 130 [4]

The non-fruiting body (thallus) grows in rosettes to 3 cm in diameter.[3][4] The rosettes sometimes coalesce with each other.[4] The lobes may appear divided at the tips. It is sometimes tightly appressed to the substrate (adnate), and sometimes not.[3][4] The fruiting bodies (apothecia) are lecanorine, meaning that they are disc-like with a ring or rim of tissue around the disc that is made of tissue similar to the thallus.[3] The tips of the lobes form hood shaped soralia that produce powdery greenish yellow soredia.[3] It prefers growing on elm or oak bark, but can also be found on rocks, bone, or other wood types.[3] In Norway, it has been recorded growing on the bark of various sun-exposed broadleaved trees, including Acer, Betula, Fagus, Fraxinus, Populus, Tilia, and Ulmus.[5] Lichen spot tests on the surface are K+ (purple), C−, KC−, and P−.[3]

  1. ^ Cite error: The named reference Species Fungorum synonymy was invoked but never defined (see the help page).
  2. ^ a b Goward, Trevor; McCune, Bruce; Meidinger, Del (1994). Lichens of British Columbia. British Columbia: Ministry of Forests Research Program. pp. 138–140. ISBN 0-7726-2194-2.
  3. ^ a b c d e f g Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ISBN 978-0-300-19500-2
  4. ^ a b c d Lichen Flora of the Greater Sonoran Desert Region. Vol 2, Nash, T.H., Ryan, B.D., Gries, C., Bugartz, F., (eds.) 2001, [1]
  5. ^ Cite error: The named reference Lindblom et al. 2019 was invoked but never defined (see the help page).