Perithecial section; Habitat: Grove of twisted Populus balsamifera on sloped shoreline; Location: Shore of Chinitna Bay, ca. 3 km ENE of Chinitna Ranger Station; Substrate: Twig, Alnus; Elevation: 8 meters; Notes: Arthopyrenia s.l. det. Breuss 2015. A. analepta det. R.C. Harris from photos 2015.
Habit; Habitat: Grove of twisted Populus balsamifera on sloped shoreline; Location: Shore of Chinitna Bay, ca. 3 km ENE of Chinitna Ranger Station; Substrate: Twig, Alnus; Elevation: 8 meters; Notes: Arthopyrenia s.l. det. Breuss 2015. A. analepta det. R.C. Harris from photos 2015.
Spores; Habitat: Grove of twisted Populus balsamifera on sloped shoreline; Location: Shore of Chinitna Bay, ca. 3 km ENE of Chinitna Ranger Station; Substrate: Twig, Alnus; Elevation: 8 meters; Notes: Arthopyrenia s.l. det. Breuss 2015. A. analepta det. R.C. Harris from photos 2015.
Perithecia; Habitat: Wetlands and dikes with scattered trees and shrubs; Location: Near mouth of Wilson River on Tillamook Bay; Substrate: Branch, Alnus; Elevation: 4 meters.
Habit; Habitat: Wetlands and dikes with scattered trees and shrubs; Location: Near mouth of Wilson River on Tillamook Bay; Substrate: Branch, Alnus; Elevation: 4 meters.
Involucrellum; Habitat: Grove of twisted Populus balsamifera on sloped shoreline; Location: Shore of Chinitna Bay, ca. 3 km ENE of Chinitna Ranger Station; Substrate: Twig, Alnus; Elevation: 8 meters; Notes: Arthopyrenia s.l. det. Breuss 2015. A. analepta det. R.C. Harris from photos 2015.
Spores; Habitat: Wetlands and dikes with scattered trees and shrubs; Location: Near mouth of Wilson River on Tillamook Bay; Substrate: Branch, Alnus; Elevation: 4 meters.
