Consortium of
North American Lichen Herbaria
- building a Global Consortium of Bryophytes and Lichens as keystones of cryptobiotic communities -
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Parmotrema cetratum (Ach.) Hale  
Go To Encyclopedia of Life...
Family: Parmeliaceae
[Parmelia cetrata Ach., moreParmelia cetrata f. cetrata Ach., Parmelia cetrata f. ciliosa Vain., Parmelia cetrata f. granularis Asahina, Parmelia cetrata f. platyloba Vain., Parmelia cetrata f. sorediifera Vain., Parmelia cetrata f. subisidiosa Müll.Arg., Parmelia cetrata var. cetrata Ach., Parmelia cetrata var. ciliosa Viaud{?}, Parmelia cetrata var. corniculata (Kremp.) Müll. Arg., Parmelia cetrata var. exornata Zahlbr., Parmelia cetrata var. hypotropoides Nyl. ex Willey, Parmelia cetrata var. sorediifera Vain., Parmelia cetrata var. ulcerata Zahlbr., Parmelia herrei Zahlbr., Rimelia cetrata (Ach.) Hale & Fletcher]
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Stephen Sharnoff  
  • Greater Sonoran Desert
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Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2002. Lichen Flora of the Greater Sonoran Desert Region. Vol 1.
Thallus: foliose, loosely adnate to adnate, 3-15 cm in diam., lobate lobes: subirregular, elongate, slightly imbricate, plane, separate, 8-15 mm wide (very variable); margin: becoming dentate lacinate with age; lacinae: 5-10 x 1-2 mm; apices: rotund, ciliate; cilia: sparse, simple, up to 2.0 mm long upper surface: ashy white to gray, smooth, dull, strongly reticulate maculate, becoming reticulately cracked with age along the maculae; soredia, isidia and pustulae absent medulla: white with continuous algal layer lower surface: black with narrow brown zone peripherally, rhizinate to margin or narrowly erhizinate marginally; rhizines: scattered, simple to squarrosely branched Apothecia: common, substipitate, up to 10 mm in diam.; margin: rugose, white maculate; disc: often perforate, concave or flat ascospores: simple, hyaline, ellipsoid, 13-15 x 7-9 Pycnidia: common marginally conidia: filiform, 10-14 x 1 µm Spot tests: upper cortex K+ yellow, C-, KC-, P+ yellow; medulla K+ yellow turning deep red, C-, KC-, P+ orange Secondary metabolites: upper cortex with atranorin and chloroatranorin; medulla with salazinic acid (major) and consalazinic acids (minor). Substrate and ecology: usually on trees World distribution: pansubtropical and pantemperate; common especially in SE USA and South Africa Sonoran distribution: SE Arizona and adjacent Sierra Madre Occidental of Chihuahua, Sonoran and Sinaloa.
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Parmotrema cetratum
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Parmotrema cetratum image
Stephen Sharnoff  
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Stephen Sharnoff  
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This project made possible by National Science Foundation Awards: #1115116, #2001500, #2001394