Xanthomendoza fallax

Xanthomendoza fallax (hooded sunburst lichen) is a small yellow-orange to red-orange foliose lichen that grows on bark or rarely on rock or bone.[1] It is found all over the world except very dry areas, with 10 species common in North America.[1][2]:130[3] The nonfruiting body (thallus) grows in rosettes to 3 cm in diameter.[2][3] The rosettes sometimes coalesce with each other.[3] The lobes may appear divided at the tips. It is sometimes tightly appressed to the substrate (adnate), and sometimes not.[2][3] 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.[2] The tips of the lobes form hood shaped soralia that produce powdery greenish yellow soredia.[2] It prefers growing on elm or oak bark, but can also be found on rocks, bone, or other wood types.[2] Lichen spot tests on the surface are K+ purple, C-, KC-, and P-.[2]

Xanthomendoza fallax
Scientific classification
Kingdom:
Fungi
Division:
Ascomycota
Class:
Eurotiomycetes
Order:
Teloschistales
Family:
Teloschistaceae
Genus:
Xanthomendoza
Species:
X. fallax
Binomial name
Xanthomendoza fallax

Older references may refer to this lichen as Xanthoria fallax.

References
  1. 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.
  2. Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ISBN 978-0-300-19500-2
  3. Lichen Flora of the Greater Sonoran Desert Region. Vol 2, Nash, T.H., Ryan, B.D., Gries, C., Bugartz, F., (eds.) 2001,
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