Caloplaca flavovirescens Teloschistaceae
Caloplaca flavovirescens

Growth type crustose. Chemical results: K+ crimson

Usually on calcareous rocks and man-made substrates, also found on coastal and acidic rocks affected by more basic downwash. Rare on saltmarsh timbers.

Areolate greenish-yellow or orange thallus surrounded by pale prothallus. Abundant orange-brown apothecia with paler margins. Hymenium without oil droplets, spores 15-20 x 5-10 Ám with a wide septum
Sometimes parasitised by Verrucaria latericola

Similar: Caloplaca crenulatella is smaller, spores have narrow septum. Caloplaca flavorubescens. Hymenium with oil droplets. Rare, corticolous.


Caloplaca flavovirescens

Caloplaca flavovirescens

Caloplaca flavovirescens
Caloplaca flavovirescens
Dorset. January 2013, February 2017. On wood, Studland Heath, June 2015

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