Small, brown, umbilicate lichen, on dry exposed rocks. Apothecia immersed, black, angular. Underside coarsely papillate underside, with few if any rhizomorphs, generally dark. Medulla C+ and KC+ red.
Western North and South America.
On siliceous rocks, in very exposed dry areas.
The only other brown apotheciate Umbilicaria in the desert southwest of North America are:
U. hyperborea: apothecia circular and raised
U. angulata: rhizomorphs present underneath
U. torrefacta: thallus conspicuously perforated (hold up to light!)
U. muhlenbergii: circular apothecia in depressions, with rhizomorphs
Umbilicaria phaea is a brown, umbilicate foliose lichen that grows up to 6 cm (2.4 in) in diameter, sometimes in colonies covering large patches of desert rocks.[1]: 127 [2] One variety that grows in northern California is brilliant red.[1] It is (monophyllous) with a single 1 – 5 cm flattish leaf-like cap on top of an anchoring stem (umbilicate).[2] The leaflike top is smooth with some lobes, roughly circular, thin, and brittle.[2] The lower surface is light gray to light brown.[2] It has up to 2.5 mm black circular to slightly polygonal spots that are the fruiting bodies (apothecia), slightly sunken into the main nonfruiting body part (thallus).[2] It grows on siliceous boulders in very dry climates of western North and South America, where it is usually the most common member of its genus.[2]
Umbilicaria phaea is a brown, umbilicate foliose lichen that grows up to 6 cm (2.4 in) in diameter, sometimes in colonies covering large patches of desert rocks.: 127 One variety that grows in northern California is brilliant red. It is (monophyllous) with a single 1 – 5 cm flattish leaf-like cap on top of an anchoring stem (umbilicate). The leaflike top is smooth with some lobes, roughly circular, thin, and brittle. The lower surface is light gray to light brown. It has up to 2.5 mm black circular to slightly polygonal spots that are the fruiting bodies (apothecia), slightly sunken into the main nonfruiting body part (thallus). It grows on siliceous boulders in very dry climates of western North and South America, where it is usually the most common member of its genus.
Umbilicaria phaea je porost[1], co go ôpisoł Tuck. Umbilicaria phaea nŏleży do zorty Umbilicaria i familije Umbilicariaceae.[2][3] Żŏdne podgatōnki niy sōm wymianowane we Catalogue of Life.[2]
Wikispecies mo informacyje ô Umbilicaria phaea.Umbilicaria phaea je porost, co go ôpisoł Tuck. Umbilicaria phaea nŏleży do zorty Umbilicaria i familije Umbilicariaceae. Żŏdne podgatōnki niy sōm wymianowane we Catalogue of Life.
