Protologue type data: Madeira: Ponte Delgada cum planta typica mixta.

Type locality: Portugal, Madeira, Ponte Delgada, together with Roccella fucifomis, Sammler müßte zu ermitteln sein (W-806 - lectotype; PC, W - isolectotypes). Designated by Tehler et al. (2004: 416).

Type locality coordinates: Data lacking.

ITS barcode: Data lacking.

Description: Lichen. Aus der Datenbank "Maritime Flechten": "Thallus fruticose, shrubby, usually pendent, 10-20 long, arising from a single holdfast, outer edge brown to dark-brown, inner side withish, branches strap-shaped, more or less flattened, apices scythe-shaped, surface minutely rugose, overall colour pale greyish to pale grey-brownish without distinct purple tinge, numerous verrucose or farinose soralia, whitish. Cortex with palissade plectenchyma (perpendicular hyphae, anticlinally arranged). Apothecia very scarce. Ascospores fusiform, straight or slightly bent, 3-septate, 20-27 x 5-7 µm. Thallus cortex: K- (branch apices and soralia often K+ pink to pale red), C+ red (possibly pale), soralia, C+ red (N.B. Reactions rather variable. Here, only the most frequent are mentioned). Thermophile, on coastal rocks, notably vertical walls in the South of Portugal and Mararonesian Islands. Very close to Roccella fuciformis and difficult to distinguish to the naked eyes. The latter has soralia C+ red and cortex K+ yellow (lepraric acid) and overall colour with purple tinge. N.B. Roccella allorgei has similar reactions to Roccella maderensis but branch apices are more terete. Tehler A., Dahlkild A., Eldenäs P. & Feige G.B. 2004. The phylogeny and taxonomy of Macaronesian, European and Mediterranean Roccella (Roccellacea, Arthoniales). Acta Univ. Ups. Symb. Bot. Ups. 34:1, 405-428."

Photobiont: Data lacking.

Chemistry: No lichen substances.

Ecology: On silicious rocks.

Distribution type: Azores, Madeira, Canary Islands and Estremadura (Portugal).

Taxonomy: Data lacking.

Note: Die Art wurde 1904 von einem einzigen Standort auf Madeira beschrieben.

Distribution Database: Distributions

Distribution Database: Discover Life

Picture Database: Tropical Lichens

Molecular Database: Genbank

Synonym Database: Index Fungorum

Synonym Database: Mycobank