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Lecanora thysanophora

 

Mapledust Lichen

KingdomFungiMushrooms, lichens, gel fungi, yeasts, and molds; also called eukaryotes
DivisionAscomycotaSac fungi
SubdivisionPezizomycotinaSac fungi with filaments
ClassLecanoromycetes“Lichenized” fungi
OrderLecanoralesMostly lichen-forming fungi
SuborderLecanorineaeLichens
FamilyLecanoraceaeLichenized fungi includes many genera, named after Lecanora
GenusLecanoraMeans "having a light-colored margin of apothecium formed by thallus" (from Stearn's Botanical Latin)
Speciesthysanophora

About plant names...

Mapledust lichen is common in eastern North America.

Identification: This lichen is pale yellow to greenish. It is thin and powdery looking, and may appear as a continuous coating, or be divided into patches. It is often scaly (leprose). A white fibrous band, the prothallus, borders the lichen. On close inspection, there may be one or two bluish zones of hyphae, the actively growing regions.

Lecanora thysanophora (Mapledust Lichen)

Close-up with mapledust lichen thallus (greenish, right), white prothallus border, and blue-gray line of hyphae.

Online References:

Lecanora thysanophora at the Consortium of North American Lichen Herbaria

Lecanora thysanophora on Stephen Sharnoff Photography

Lecanora thysanophora on www.jstor.org

Lecanora thysanophora on the Mushroom Observer

References:

Walewski, Joe, Lichens of the North Woods, Kollath+Stensaas Publishing, 2007, p. 97

Lecanora thysanophora description by Thomas H. Kent, last updated 16 Aug 2013.

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Lecanora thysanophora (Mapledust Lichen)

On large sugar maple. · 9/26/2010 · Brooks Woodland Preserve, Swift River Tract, Petersham, MA
≈ 8 × 5" (19 × 13 cm) ID is uncertain

Lecanora thysanophora (Mapledust Lichen)

On large sugar maple. · 9/26/2010 · Brooks Woodland Preserve, Swift River Tract, Petersham, MA
≈ 8 × 5" (19 × 13 cm) ID is uncertain

Lecanora thysanophora (Mapledust Lichen)

4/10/2010 · Nashua River Rail Trail, Groton, MA
≈ 4 × 6" (10 × 15 cm) ID is uncertain