Caloplaca flavovirescens Teloschistaceae
Gyalolechia flavovirescens (Caloplaca flavovirescens)

Growth type crustose. Chemical results: K+ crimson

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

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

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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