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Caloplaca flavovirescens

 

Sulphur firedot

KingdomFungiMushrooms, lichens, gel fungi, yeasts, and molds; also called eukaryotes
DivisionAscomycotaSac fungi
SubdivisionPezizomycotinaSac fungi with filaments
ClassLecanoromycetes“Lichenized” fungi
OrderLecanoralesMostly lichen-forming fungi
SuborderTeloschistineaeIncludes Caloplaca, Fulgensia, Teloschistes, Xanthoria, others
FamilyTeloschistaceaeIncludes Caloplaca, Teleschistes, Xanthoria
GenusCaloplacaColorful rock-growing lichens
SpeciesflavovirescensMeans “yellow-green”

About plant names...

Sulphur firedot is common in much of North America.

Identification: This lichen prefers calcium-rich rocks, as well as unpainted concrete, which is rich in calcium. It is yellow or yellow-orange in color, and its apothecia (fruiting structures) are dark orange, with yellow borders.

Online References:

Caloplaca flavovirescens on the Stridvall Family Domain

Caloplaca flavovirescens on Stephen Sharnoff Photography

Caloplaca flavovirescens on Discover Life

References:

Walewski, Joe, Lichens of the North Woods, Kollath+Stensaas Publishing, 2007, p. 58

Caloplaca flavovirescens description by Thomas H. Kent, last updated 25 May 2020.

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Caloplaca flavovirescens (sulphur firedot)

Orange: Xanthoria elegans; yellow: Caloplaca flavovirescens. · 12/3/2005 · Maine ID is uncertain