Oxneria fallax | |
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Scientific classification
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Domain: | Eukaryota |
Kingdom: | Fungi |
Division: | Ascomycota |
Class: | Lecanoromycetes |
Order: | Teloschistales |
Family: | Teloschistaceae |
Genus: | Oxneria |
Species: | O. fallax
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Binomial name | |
Oxneria fallax | |
Synonyms [1] | |
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]