Cetrariella delisei (Bory ex Schaer.) Kärnefelt & A. Thell

in Kärnefelt et al., Bryologist 96, 3: 403 (1993).

Basionym: Cetraria islandica δ delisei Bory ex Schaer., xxx: 16 (1850).

 

Synonym: Index Fungorum

Protolog: Data lacking.
Type locality: Canada, Newfoundland & Labrador ("Terreneuve"), 1828, Despréaux (UPS - lectotype). Lectotypification in Kärnefelt (1979: 68).
Barcode: Available. Data lacking.
Coordinates: Data lacking.

 

Thallus: erect, richly dichotomously branched, often forming rather dense tufts, to 5-8 cm high. Lobes weakly canaliculate, apically very narrow, 0.5-1 mm wide, middle and lower parts 2- 8 mm wide, brown to dark brown in apical parts, gradually more yellowish in lower parts. Lower surface with longitudinal ridges, dull; upper surface smoother, rather glossy; medulla lax. Marginal pycnidia-bearing projections scattered, to 0.5 mm long. Soralia rare. Pseudocyphellae distinct on the lower surface. Apothecia rare, submarginal on expanded lobes, to 17 mm diam.; disc concolorous with the surrounding thallus. Spores ellipsoidal, 6- 8.5 x 2.5 |μm. Pycnidia blackish brown, on projections. Conidia bottle-shaped, 7- 9 x 0.5- 1.5 µm.

Photobiont: Green alga.

Chemistry: Cortex C—, K—, KC—, PD—. Medulla and pseudocyphellae C+ pale reddish, K—, KC+ reddish, PD—; gyrophoric and hiascic acids.

Ecology: Mainly in wet depressions of bogs or fens, especially in the north, occasionally also on rather exposed rock outcrorps or alpine heaths.

Molecular data: Genbank

Distribution: Common in arctic and alpine regions, scattered or rare in most provinces further south and in lowlands. In Europe also known from Scotland, the Alps and the Carpathians. It has a circumpolar arctic-alpine distribution, but occurs also in Patagonia and New Zealand. Database

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