Type: Ecuador, Galapagos Islands, San Cristóbal, near Tortugueria Cerro Colorada, on lava cliff, 130 m alt., 2 June 2005, A. Aptroot 63419 (CDS 30174–holotype; ABL–isotype).
Etymology. The small branches are relatively fragile and easily break of at the base.
Thallus dull, shrubby, up to 3 cm in diam., upright or irregularly spreading, fragile, with very few branches, rather pale grey and resembling a small Roccella; branches terete, up to ca. 1 mm in diam, but usually much thinner; soralia discrete, capitate, whitish, up to ca. 1 mm in diam; apothecia and pycnidia unknown; medulla K-, UV- (no substances) or K+ pinkish, UV- (sekikaic acid); cortex with usnic acid and often atranorin.
Because of its similarity to Roccella, the small, pale thalli with terete, fragile branches can hardly be confused with any other Ramalina species in the Galapagos. Although it is very distinct, the small species may easily be overlooked.
Selected specimens examined. Ecuador: Galápagos: Pinzón Island, along the trail going up from Playa Escondida, 0˚ 36’ 10” S, 90˚ 40’ 1” W, alt. 254 m, arid zone with Prosopis juliflora, Alternanthera filifolia, Maytenus octogona, and Croton scouleri, on rock, basalt, 16 ii 2006, A. Aptroot 64127 (CDS no. 30689); San Cristóbal Island, near Tortugueria Cerro Colorada, 0˚ 54’ 56” S, 89˚ 26’ 18” W, alt. 130 m, on rock (basalt lava), 02 vi 2005, A. Aptroot 63419 (CDS no. 30174); rim of crater to the NW of Media Luna, inland from the NW-coast, 0˚ 43’ 51” S, 89˚ 18’ 55” W, alt. 149 m, lower transition zone; basalt cliffs of inner and outer crater rim with scarce vegetation, on rock, S-exposed overhang of cliff on top of crater rim; shaded, wind- and rain-sheltered, 22 iv 2007, F. Bungartz 6306 (CDS no. 34518).
from: Aptroot, A. & Bungartz, F. (2007) The lichen genus Ramalina on the Galapagos. The Lichenologist39(6): 519-542.