lichen-Physcia phaea

Physcia phaea

Physcia phaea substrate

Physcia phaea substrate photo by Bob Klips

Physcia phaea margins

Physcia phaea photo by Bob Klips

Physcia phaea lobe

Physcia phaea thallus lobes photo by Bob Klips

DIAGNOSTIC FEATURES: NIS; strongly white maculate, found on rocks; compare with P. caesia which is sorediate and P. aipolia which is similar but found on bark.

ECOLOGY: Rather common on rocks in the US excluding the central prairie region; this species was formerly lumped with P. aipolia; probably more common in Ohio on native rock and cemetery headstones; only two confirmed collections from Coshocton and Crawford counties.

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