Biology:Aspicilia phaea
| Aspicilia phaea | |
|---|---|
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Pertusariales |
| Family: | Megasporaceae |
| Genus: | Aspicilia |
| Species: | A. phaea
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| Binomial name | |
| Aspicilia phaea Owe-Larss. & A.Nordin (2007)
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Aspicilia phaea (dusky sunken disk lichen) is a grayish brown to tan areolate crustose lichen commonly found on rock in coastal to inland parts of central and southern California . Described as new to science in 2007,[1]:227[2] it is endemic to (only found in) California.[3] It grows on exposed or partially shaded siliceous rock, with a few known occurrences on serpentine rock.[2]
In rare cases full areolas do not form, and it appears as being cracked (rimose).[1][2] There are often grayish or whitish spots on the areolas.[2] The thallus is 2–8 cm in diameter, and 0.1– 1.2 mm thick.[2] The areolas are irregularly sized and angular, giving the lichen body (thallus) the appearance of a mosaic of small polygons.[1][2] A rim of dark tissue (prothallus) may surround the edges of the lichen.[1][2] The fruiting body parts (apothecia) are flat to concave (especially in the thallus center), and slightly immersed in the thallus, appearing as sunken round to polygonal discs, often with a grey or white rim of thalline tissue.[1][2] Lichen spot tests are all negative (K−, C−, KC−, P−).[1][2]
The photobiont is a chlorococcoid.[2] In Joshua Tree National Park, it is commonly found to be infected with Lichenostigma, a genus or lichenicolous fungi (fungi that are parasitic on lichens).[3]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ISBN:978-0-300-19500-2
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 Lichen Flora of the Greater Sonoran Desert Region. Vol 3, Nash, T.H., Ryan, B.D., Gries, C., Bugartz, F., (eds.) 2001, [1]
- ↑ 3.0 3.1 The Lichen Flora of Joshua Tree National Park An Annotated Checklist, Kerry Knudsen, Mitzi Harding, Josh Hoines, National Park Service, [2]
Wikidata ☰ Q10420169 entry
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