Identification key
Parmelia sulcata
(1) Parmelia sulcata
Description
Thallus
Foliose, up to 15 cm in diameter, cut-out lobes of 5 mm wide, with a network of white fissures (pseudocyphellae) present at least at the lobe margins and giving soralia (3)
Foliose, up to 15 cm in diameter, cut-out lobes of 5 mm wide, with a network of white fissures (pseudocyphellae) present at least at the lobe margins and giving soralia (3)
Color
Bluish-gray to greenish-grey upperside, brown and black underside
Bluish-gray to greenish-grey upperside, brown and black underside
Reproduction
Apothecia: rare, reddish-brown disc
Soralia: more or less abundant, greenish and emanating from the pseudocyphellae
Isidia: absence
Apothecia: rare, reddish-brown disc
Soralia: more or less abundant, greenish and emanating from the pseudocyphellae
Isidia: absence
Risk of confusion
Parmelia saxatilis, less frequent, isidiate, also presenting pseudocyphellae
Parmelia saxatilis, less frequent, isidiate, also presenting pseudocyphellae
Ecology
Substrate
On bark, sometimes on non-calcareous rock
On bark, sometimes on non-calcareous rock
Habitat
Wide ecological amplitude
Wide ecological amplitude
Occurrence
Common
Common
Sensitivity to air pollution
Resistant to pollution
Resistant to pollution
(2)
(3)
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