Lasallia pustulata (L.) Mérat ssp. papulosa (Ach.) W.A. Weber
Umbilicaria papulosa (Ach.) Nyl.
Umbilicaria pustulata (L.) Hoffm. var. papulosa (Ach.) Tuck.
Lasallia papulosa (Ach.) Llano Common toadskin lichen, blistered naval lichen
Toadskin lichen is aptly named. It is found on boulders and cliff faces: sandstones, granites, rhyolites, other acid rocks; and very dry surfaces. It is found throughout much of North America. Identification: This is an umbilicate lichen, attached to a rock at a single point. Each lichen is up to 3½" (9 cm) in diameter, with pustules (bumps) that appear to radiate from the center. The upper surface is gray, flecked with black apothecia; or may be brown with rust-colored bumps. A technical description is available at the Consortium of North American Lichen Herbaria. Online References:
Lasallia papulosa on Stephen Sharnoff Photography Lasallia papulosa on lichenportal.org Lasallia papulosa on Wikispecies References:
9/17/2016 · Mount Desert Island, Bar Harbor, Maine 9/20/2013 · Mt. Watatic, Ashby, Massachusetts Lasallia pustulata (L.) Mérat ssp. papulosa (Ach.) W.A. Weber Umbilicaria papulosa (Ach.) Nyl. Umbilicaria pustulata (L.) Hoffm. var. papulosa (Ach.) Tuck.
Lasallia papulosa description by Thomas H. Kent, last updated 25 May 2020. © FloraFinder.org. All rights reserved. |
11/8/2009 · Yellow Trail from Pearl Hill State Park to Willard Brook State Park, Ashby, Massachusetts 4/21/2013 · Crow Hill Trail, Leominster State Forest, Leominster, Massachusetts 7/3/2012 · Yellow Trail from Pearl Hill State Park to Willard Brook State Park, Ashby, Massachusetts 9/20/2013 · Mt. Watatic, Ashby, Massachusetts 9/19/2009 · Acadia National Park, Bar Harbor, Maine
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