Английская Википедия:Aspicilia phaea
Шаблон:Short description Шаблон:Species box
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]Шаблон:Rp[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, Шаблон:ISBN
- ↑ 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]
