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:
References:
9/17/2016 · Mount Desert Island, Bar Harbor, Maine 9/20/2013 · Mt. Watatic, Ashby, Massachusetts · ≈ 9 × 6″ (22 × 15 cm) 11/8/2009 · Yellow Trail from Pearl Hill State Park to Willard Brook State Park, Ashby, Massachusetts · ≈ 11 × 7″ (27 × 18 cm) 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 26 Jul 2023. © FloraFinder.org. All rights reserved. |
5/5/2023 · Morse Mountain, Phippsburg, Maine 4/21/2013 · Crow Hill Trail, Leominster State Forest, Leominster, Massachusetts · ≈ 5 × 3½″ (13 × 9.2 cm) 7/3/2012 · Yellow Trail from Pearl Hill State Park to Willard Brook State Park, Ashby, Massachusetts · ≈ 6 × 4″ (15 × 10 cm) 9/20/2013 · Mt. Watatic, Ashby, Massachusetts · ≈ 9 × 6″ (23 × 16 cm) 9/19/2009 · Acadia National Park, Bar Harbor, Maine · ≈ 11 × 7″ (27 × 18 cm) 7/23/2023 · The Mountain Trails, The Mountain Preserve, Belgrade Lakes Village, Maine
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