Xanthoparmelia maricopensis, the Maricopa rock-shield, is a 2–6 cm (0.8–2.4 in) wide, yellow-green foliose lichen in the Parmeliaceae family. It grows on igneous rock in southwestern North American deserts.[1][2][3]
| Xanthoparmelia maricopensis | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Lecanorales |
| Family: | Parmeliaceae |
| Genus: | Xanthoparmelia |
| Species: | X. maricopensis
|
| Binomial name | |
| Xanthoparmelia maricopensis | |
Description
editThe thallus is tightly attached to the substrate, with irregular somewhat shiny 1–2 mm lobes.[2] It differs from Xanthoparmelis dierythra in that it has hyposalazinic acid and the lobes are usually more narrow and convex. The lower surface is tan and has unbranched rhizenes.[3]
Metabolites
editThe upper cortex is K−, C−, KC−, and P−. The medulla is K+ yellow to orange, C−, KC−, P+ orange.[2] The upper cortex has usnic acid as a secondary metabolite.[2] The medulla has norstictic acid and traces of hyposalazinic acid and connorstictic acid.[2]
Distribution and habitat
editIt is common in lower elevations of the Sonoran Desert in Arizona, southern California, and north and south Baja California to Chihuahua, Mexico and Sonora Mexico.[2] In Joshua Tree National Park it grows on non-calcareous rock, soil, basalt, gneiss, and monzogranite.[1]
See also
editReferences
edit- ^ a b Xanthoparmelia maricopensis in the Joshua Tree National Park (California, U.S.A.), Map collection, Kerry Knudsen, Kocourková Jana.
- ^ a b c d e f Lichen Flora of the Greater Sonoran Desert Region, Vol 2., Nash, T.H., Ryan, B.D., Gries, C., Bugartz, F., (eds.) 2001.
- ^ a b Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ISBN 978-0-300-19500-2. Page 138.