Lecanora oreinoides (Sunken rim-lichen)

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Lecanora oreinoides (Körb.) Hertel & Rambold

Sunken rim-lichen

Kingdom	Fungi	Mushrooms, lichens, gel fungi, yeasts, and molds; also called eukaryotes
Division	Ascomycota	Sac fungi
Subdivision	Pezizomycotina	Sac fungi with filaments
Class	Lecanoromycetes	“Lichenized” fungi
Order	Lecanorales	Mostly lichen-forming fungi
Suborder	Lecanorineae	Lichens
Family	Lecanoraceae	Lichenized fungi includes many genera, named after Lecanora
Genus	Lecanora	Means "having a light-colored margin of apothecium formed by thallus" (from Stearn's Botanical Latin)
Species	oreinoides

About plant names...

Sunken rim-lichen is native to North America.

Identification: Lichen is whitish to pale gray. It appears as a thin layer directly on rock surfaces (crustose), looking a bit like paint that dried and cracked. Its fruiting bodies (apothecia) are black and slightly sunken. There may be more than one per "tile."

Online References:

Stephen Sharnoff Photography

Discover Life

The Australian Government's Australian National Botanic Gardens

References:

Brodo, Irwin M.; Sharnoff, Sylvia Duran; Sharnoff, Stephen, Lichens of North America, Yale University Press, 2001, p. 384

Lecanora hypospilota Vain.

Lecidea oreinodes (Körb.) W.A. Weber & Hertel

Lecanora tesselina (Tuck.) Zahlbr.

Lecidea tennessensis Nyl.

Lecidea tesselina Tuck.

Lecanora oreinoides description by Thomas H. Kent, last updated 25 May 2020.

4/10/2010 · Tom & Susan’s, Pepperell, Massachusetts · ≈ 3½ × 2½″ (9.8 × 6.6 cm) ID is uncertain