Irish lichens

Physcia tenella
Order: Lecanorales       Family: Physciaceae

Species: Physcia tenella

Growth type foliose.
Photos: On ornamental Sorbus trunk. Macroom, Cork, SW Ireland.

Small thallus with +/- erect, long, whitish-grey lobes covered with small pseudocyphellae, margins with long, whitish cilia. Lobe ends split revealing lip-shaped, cream coloured soralia. Dark apothecia.

Pioneer species, usually occurs on nutrient-rich branches and twigs, occasional on rock. Thallus: K+ yellow. Medulla: K-

Similar: P. adscendens. Hood-shaped lobe ends. Usually on rocks.
Physcia dubia, lacks marginal cilia.

The lichenicolous fungus Syzygospora physciacearum can be found on Physcia species.


Physcia tenella


Physcia tenella


Physcia tenella


Physcia tenella
Physcia tenella.

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