Irish lichens

Parmeliella parvula

Order: Peltigerales       Family: Pannariaceae

Species: Parmeliella parvula

Growth type squamulose.
Photos: Killarney National Park, Co. Kerry, SW Ireland.
Identified by John Douglass

Variable. Small bluish-grey or olive-fawn, flat or crenulate squamules, 1-2mm long. Scattered or forming small patches or a +/- continuous crust. Marginal, coarsely granular, bluish isidia can spread to cover thallus. Apothecia very rare, reddish-brown with paler margins.

Found on mossy rocks and deciduous trees in sheltered, moist, western woodlands. Chemical reactions absent.

Similar: Fuscopannaria mediterranea. Rare. Blue-mauve soralia.

Parmeliella parvula

Parmeliella parvula
Parmeliella parvula November 2009

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