Protologue type data: Type: Canary Islands, La Palma. Los Tilos, laurisilva forest, on narrow ridge, on trunk of Laurus azorica, c. 750 m, V. 1999, P. P. G. van den Boom 22241 (LG holotype; hb Van den Boom isotype).

Type locality: Spain, Canary Islands, La Palma, Los Tilos, laurisilva forest, on narrow ridge, on trunk of Laurus azorica, ca. 750 m, 5.1999, P. P. G. van den Boom 22241 (LG - holotype; van den Boom - isotype).

Type locality coordinates: 28°48'0"N, 17°46'0"W; 28.8°, -17.766667°.

ITS barcode: Data lacking.

Description: Lichen. Thallus crustose, green to dark green, or brownish-green, formed of isolated to contiguous, slightly convex areoles or, when well-developed, made of appressed, minute and thin (c. 100-150 µm thick) squamules that can become tuberculate on their margins, or even produce minute granules at their margins; prothallus absent or made of a pale grey film between the thallus granules. Apothecia abundant, 0.3-0.5-0.6 mm diam., disc at first slightly concave, soon becoming plane or slightly convex, pale pinkish orange, with a distinct, concolorous or slightly paler margin that becomes excluded in old apothecia. Excipulum made of radiating, branching and anastomosing thick-walled hyphae with narrow lumina, distinctly but irregularly inflated on the outer edge (up to 4-6 µm), c. 30 µm in lateral parts; brownisk K- pigment in the outer cells walls, other hyaline. Hypothecium hyaline or very pale orange, c. 20 µm thick; hymenium hyaline, 65-75 µm thick; paraphyses simple or branched, rarely anastomosed, with their upper parts slightly inflated up to 2(-3) µm. Ascospores 8 per ascus, bacillifrom to slightyl fusiform, with rounded ends, rarely slightly clavate or tapering towards the proximal end, usually straight, 5-7(-9)-septate, (19-)22-31(-34) µm x 4-5 µm. Pycnidia immersed in the thallus, 0.1 mm diam. Conidia filiform, curved, non-septate, 10-15 x 1.0 µm (Brand et al. 2009: 82).

Photobiont: Belonging to the Chlorococcaceae.

Chemistry: No lichen substances detected by TLC. Pigment in excipulum and pycnidia wall belonging to the "rubella orange" (Ekman 1996; included in "arceutina-yellow" by Meyer & Printzen 2000), hardly changing with K, C and N (Brand et al. 2009: 82).

Ecology: On bark.

Distribution type: Only known from the type locality in La Palma (Spain).

Note:

Distribution Database: Distributions

Distribution Database: Discover Life

Picture Database: Tropical Lichens

Molecular Database: Genbank

Synonym Database: Index Fungorum

Synonym Database: Mycobank