Lichenologist25(1): 25 (1993).—Ramalina dasypoga var. sorediosa de Lesd., Revue Bryol. et Lichénol. 7: 59 (1934).
A pan-American species already reported from the Galapagos by Landrón (1972), repeated by Kashiwadani & Kalb (1993), but not mentioned by Weber (1986), who erroneously reported material of this species as R. furcellata (Mont.) Zahlbr. Abundant and widespread, especially in the humid highlands, the agricultural areas of inhabited islands as well as natural areas, more rarely also in the lowlands or along the coast; typically corticolous, rarely lignicolous, very rarely saxicolous, once also found on metal of an old car wreck. Despite its name not to be confused with R. sorediantha (see comments there).
Selected specimens examined. Ecuador: Galápagos: Isabela Island, Volcán Alcedo, outer SE-exposed slope, ca. 2 km below the crater rim, 0˚ 26’ 16” S, 91˚ 4’ 36” W, alt. 798 m, transition zone; ± dense shrubby vegetation of Tournefortia rufo-sericea with scattered trees of Psidium galapageium, Zanthoxylum fagara, and Solanum erianthum, on bark, upper side of inclined Zanthoxylum fagara trunk; shaded, ± wind- and rain-sheltered, 07 iii 2006, F. Bungartz 4185 (CDS no. 28227); on the crater rim near the hut, 0˚ 26’ 33” S, 91˚ 5’ 31” W, alt. 1100 m, fern-sedge zone; Pteridium arachnoideum and Stachytarpheta cayennensis, scattered low shrubs of Tournefortia rufo-sericea and outcrops of basalt tuff in between, on bark, Zanthoxylum, 07 iii 2006, A. Aptroot 65233 (CDS no. 31819); Pinta Island, along the trail up to the summit from the S-coast, 0˚ 34’ 22” N, 90˚ 45’ 3” W, alt. 329 m, transition zone; open woodland of Zanthoxylum fagara, Pisonia floribunda, and few Trema micrantha; grasses and Justicia galapagana in the understory, on bark, twigs of Zanthoxylum fagara; sunny, wind- and rain-exposed, 27 ii 2007, F. Bungartz 5859 (CDS no. 33535); Pinzón Island, along the trail going up from Playa Escondida, N- to W-facing cliff above a crater, 0˚ 36’ 29” S, 90˚ 40’ 14” W, alt. 318 m, dry transition zone with Cordia lutea, Croton scouleri, and at the bottom of the cliff also Scalesia baurii ssp. baurii, on rock (basalt lava), 16 ii 2006, A. Aptroot 64044 (CDS no. 30605); San Cristóbal Island, near Tortugueria Cerro Colorada, 0˚ 54’ 56” S, 89˚ 26’ 18” W, alt. 130 m, on bark, shrub, 02 vi 2005, A. Aptroot 63431 (CDS no. 30186); Cerro Colorado, enclosure for Calandrinia galapagosa near the viewpoint on the top, 0˚ 54’ 58” S, 89˚ 26’ 5” W, alt. 350 m, transition zone; open shrubland of mostly Croton scouleri, Waltheria ovata, and Macraea laricifolia on W-exposed cinder cone, on bark, stems and branches of Croton scouleri; sunny, wind- and rain-exposed, 29 iv 2007, F. Bungartz 6749 (CDS no. 35000); Santa Cruz Island, Cerca de la mina de granillo rojo, vía a Baltra, 0˚ 37’ 2” S, 90˚ 22’ 6” W, alt. 290 m, Zona de transición, con árboles de Bursera, Opuntia y Croton, Psidium galapageium, Piscidia carthagenensis, sobre corteza, Ramas de Cordia lutea, corticulosos, 21 vi 2006, F. Nugra 8 (CDS no. 32661); near the CDRS field-weather station below the summit of Cerro Crocker, 0˚ 38’ 35” S, 90˚ 19’ 42” W, alt. 830 m, fern-sedge zone; much overgrown with dead Cinchona pubescens trees, N-exposed slope, on wood, wooden door frame of the little weather station hut, 28 xii 2005, F. Bungartz 3303 (CDS no. 26958); along the road from Bellavista to Los Gemelos, 0˚ 37’ 56” S, 90˚ 23’ 33” W, alt. 579 m, open Scalesia pedunculata forest with Rubus niveus, Coffea arabica, Zanthoxylum fagara, and scattered lava boulders, on bark, Scalesia, 12 ii 2006, A. Aptroot 63848 (CDS no. 30406); Santiago Island, along the trail from Bucanero to Jaboncillos, ca. 1 km below the summit of Cerro Gavilan , 0˚ 11’ 45” S, 90˚ 47’ 20” W, alt. 680 m, transition zone; open Psidium galapageium forest with Zanthoxylum fagara, Blainvillea dichotoma, Mentzelia aspera and Senna obtusifolia, basalt boulders and outcrops in between, on wood, 22 iii 2006, A. Aptroot 65426 (CDS no. 32012).
from: Aptroot, A. & Bungartz, F. (2007) The lichen genus Ramalina on the Galapagos. The Lichenologist39(6): 519-542.