Parmelia sulcata
Hammered Shield forms broad, pale gray rosettes with softly lobed margins and a subtly sculpted surface. The thallus often appears dusted or frosted, especially where powdery reproductive structures collect along ridges and folds. In these images, the lichen grows across weathered bark alongside a mix of bright yellow and granular crusts, creating a layered and textured community typical of mature tree trunks.
For identification details and comparison with other similar species, see the Parmelia sulcata page in the Field Notes section.
Hammered Shield in a Mosaic of Bark Lichens
A pale gray rosette anchors a textured patchwork of yellow and crustose lichens on aging bark.
Camera: Canon EOS 5D Mk IV
Lens: EF100mm f/2.8L Macro IS USM
Settings: ISO 200 • Aperture f/13 • Shutter 0.3 s
E21A9228-33 • Size: 2525x3788
Hammered Shield Rosette Detail
A well-formed rosette shows broad lobes and subtle surface texture against a mosaic of bark lichens.
Camera: Canon EOS 5D Mk IV
Lens: EF100mm f/2.8L Macro IS USM
Settings: ISO 200 • Aperture f/13 • Shutter 0.5 s
E21A9234-41 • Size: 1621x2432
Hammered Shield in Bark Community
A layered bark community highlights the contrast between gray foliose lobes and scattered yellow lichen.
Camera: Canon EOS 5D Mk IV
Lens: EF50mm f/2.5L Compact Macro
Settings: ISO 200 • Aperture f/13 • Shutter 0.6 s
E21A9280-86 • Size: 3794x2529
Hammered Shield with Scale Reference
A field view with ruler provides scale for the rosette and surrounding lichen community.
Camera: Canon EOS 5D Mk IV
Lens: EF50mm f/2.5L Compact Macro
Settings: ISO 200 • Aperture f/13 • Shutter 0.6 s
E21A9287 • Size: 3794x2529