online flora
Physcia leptalea
(1) Physcia leptalea
Description
Thallus
Foliose, up to 4 cm, dotted with white macules clearly visible with a magnifying glass, long and narrow lobes (1 to 2 mm wide), not ascending extremities, margins provided with long concolorous cilia

Color
Upper side gray more or less dark
Reproduction
Apothecia: numerous, up to 3 mm in diameter, with blue-gray disc usually slightly pruinose
Soralia: —
Isidia: —
Risk of confusion
Anaptychia ciliaris, larger and has a fruticose thallus
Physcia adscendens/Physcia tenella, rarely show apothecia and are abundantly provided with greenish soralia
Physcia aipolia, more attached to the substrate, shows macules and lacks cilia

Ecology
Substrate
On bark or branch

Habitat
On small trees and shrubs in the coastal environment

Occurrence
Rather rare

Sensitivity to air pollution
Moderately sensitive to pollution

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