Identification key
Lecanora sp.
(1) Lecanora sp.
Description
Thallus
Crustose, with a relatively smooth and well-defined thallus, which can sometimes cover large surfaces (up to 12 cm). The determination to the species level requires the use of chemical reagents, microscopic examination, or even molecular analysis.
Crustose, with a relatively smooth and well-defined thallus, which can sometimes cover large surfaces (up to 12 cm). The determination to the species level requires the use of chemical reagents, microscopic examination, or even molecular analysis.
Color
Whitish, greyish, yellowish or greenish-white
Whitish, greyish, yellowish or greenish-white
Reproduction
Apothecia: frequent and often numerous, about 1–2 mm in diameter, disc and margin usually of different colors, sometimes covered with whitish powder (4)
Soralia: absence
Isidia: absence
Apothecia: frequent and often numerous, about 1–2 mm in diameter, disc and margin usually of different colors, sometimes covered with whitish powder (4)
Soralia: absence
Isidia: absence
Risk of confusion
None
None
Ecology
Substrate
On bark, rock, or artificial substrate
On bark, rock, or artificial substrate
Habitat
Very variable, but often nitrophilous
Very variable, but often nitrophilous
Occurrence
Common
Common
Sensitivity to air pollution
Very variable, but often resistant to pollution
Very variable, but often resistant to pollution
(2)
(3)
(3)
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