Usnea lapponica (powdered beard lichen)

Usnea lapponica Vain.

Usnea laracina Vain. ex Rasanen

Usnea sorediifera sensu Mot.

Powdered beard lichen, Lapland beard 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	Parmeliaceae	Includes many common lichens such as Xanthoparamelia, Usnea, Parmotrema, and Hypotrachyna
Genus	Usnea	From Arabic Ushnah, “lichen,” which was translated to Latin by Ebubekir Muhammed bin Zekeriya Razi
Species	lapponica

About plant names...

I don’t have a range map for this lichen yet.

Identification: Beard lichens are difficult to identify without chemical tests, so the photos at right may not be correct IDs.

Online References:

Usnea lapponica on Stephen Sharnoff Photography

Usnea lapponica on Flickr

Usnea lapponica at Wisconsin Mushrooms

References:

Walewski, Joe, Lichens of the North Woods, Kollath+Stensaas Publishing, 2007, p. 137

Usnea lapponica description by Thomas H. Kent, last updated 25 May 2020.

Looks like Bristly Beard Lichen (Usnea hirta) to the left. · 4/3/2010 · Birch Point Beach State Park, Owl’s Head, ME
≈ 10 × 7" (26 × 17 cm) ID is uncertain

4/3/2010 · Birch Point Beach State Park, Owl’s Head, ME
≈ 32 × 23" (82 × 57 cm) ID is uncertain