Consortium of Lichen Herbaria
- building a Global Consortium of Bryophytes and Lichens as keystones of cryptobiotic communities -
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Lecidea laboriosa Müll.Arg.  
Family: Lecideaceae
Lecidea laboriosa image
Stephen Sharnoff
  • Greater Sonoran Desert
  • Resources
Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2004. Lichen Flora of the Greater Sonoran Desert Region. Vol 2.
Thallus: endolithic, scarcely epilithic; prothallus: not developed areoles: either lacking or continuous or dispersed, flat, irregular, up to 0.5 mm in diam. surface: if visible: white, pale gray, or sand-colored, rough medulla: white, I- or partially weakly I+ violet Apothecia: black, loosely attached with strongly constricted base, 0.6-1.4(-4.2) mm in diam. disc: black, concave to flat (however sometimes waved) to convex (rarely subglobose), dull, epruinose or faintly pruinose; margin: black, persistent (more rarely evanescent), dull to shiny, often more or less undulate, sometimes gray outside and vertically striated exciple: unpigmented or sometimes pale purplish brownish (cf. melaenida-red), peripherally black, 30-80 µm wide, ochre opaque inside due to crystalline substances, that dissolve in K, C- epihymenium: black with a green, olive or brown tinge (cinereorufa-green) usually present, sometimes lacking), 8-14 µm thick hymenium: colorless or more rarely with a pale violet tinge (cf. melaenida-red), 37-57 µm tall, I+ blue; paraphyses: simple, rarely branched, apical cells 3.5-5 µm wide, globose, with dark caps subhymenium: colorless (in lactic blue), 25-50 µm thick hypothecium: colorless to pale brown, 40-90 µm thick asci: clavate, 3550 x 11-14 µm, 8-spored ascospores: oblong, (6-)8-11.9(16) x (2-)2.6-3.8(-5) µm length to width: 2.3-3.7 : 1, mean volume 42-105 µm3 Pycnidia: graphidoid, immersed in tiny whitish areoles conidia: cylindrical, (6-)8.4-12.3(16) x 1-1.3 µm Spot tests: cortex and medulla K-, C-, KC-, P- Secondary metabolites: 4-O-demethylplanaic acid, sometimes in addition with traces of planaic acid, or (more rarely) acid deficient. Substrate and ecology: in open habitats on acidic rocks, lowland to alpine, most common in montane and subalpine areas World distribution: bipolar and extending into the tropics in alpine areas Sonoran distribution: most common in Arizona and southern California, Baja California and Baja California Sur.
Lecidea laboriosa
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Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Stephen Sharnoff
Lecidea laboriosa image
Sheila Strawn
Lecidea laboriosa image
Garry Neil
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Garry Neil
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Garry Neil
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Garry Neil
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Garry Neil
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Garry Neil
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Garry Neil
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Garry Neil
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Garry Neil
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Garry Neil
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This project made possible by National Science Foundation Awards: #1115116, #2001500, #2001394
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