Sarcogyne algoviae H.Magn, 1935

Westberg, Martin, Timdal, Einar, Asplund, Johan, Bendiksby, Mika, Reidar Haugan,, Jonsson, Fredrik, Larsson, Per, Odelvik, Goeran, Wedin, Mats & Millanes, Ana M., 2015, New records of lichenized and lichenicolous fungi in Scandinavia, MycoKeys 11, pp. 33-61 : 47-48

Sarcogyne algoviae H.Magn, 1935

Sarcogyne algoviae H.Magn. Rabenh. Krypt.-Fl., Edn 2 (Leipzig) 9(5.1): 78. 1935.

Holotype.

[GERMANY, Bayern] Obere Seealpe in der Allgäuer Alpen bei Oberstdorf, c. 5000'. 1860, H. Rehm ( S L2741!).

Distribution.

New to Sweden. This is a little known species rarely reported in the literature. Sarcogyne algoviae belongs to the morphological group in Sarcogyne with a strongly carbonized margin ( Westberg et al. 2015). The apothecia vary considerably in size (0.3-1.8 mm) and has a raised, often glossy margin that is incised at short and fairly regular intervals (Fig. 11a, b ) forming 5-15 segments. The disc is brown to dark reddish brown and often has one or two small carbonized accretions on the surface. Further characters include a euamyloid hymenium, 65-105 µm tall and narrow, 1-1.5 µm wide paraphyses, ellipsoid to narrowly ellipsoid spores, 2.5-4 × 1.5 µm and a colorless hypothecium (Fig. 11c ). It can primarily be confused with S. clavus and S. hypophaea (syn. S. privigna , see Knudsen et al. 2013) but is apparently not closely related to either of these species (see phylogeny in Westberg et al. 2015). Sarcogyne clavus in its current sense (e.g. Magnusson 1935) always grows on siliceous rocks, has larger apothecia (up to 6 mm wide) with a margin that is irregularily cracked and crenulate and has a yellowish, to pale brownish hypothecium. Sarcogyne hypophaea grows on both siliceous and calcareous rocks and has generally smaller apothecia 0.3-0.7(1.3) mm, with a different appearance. The margin can be without or with rather indistinct incisions or with fewer (3-8) incisions at irregular intervals.

We have found Sarcogyne algoviae on several localities in Scandinavia, two in the continental parts of southern Norway and two in the Abisko area in northernmost Sweden. In addition we have found a few specimens from the Swedish mountains under the name S. clavus in the herbarium UPS. In all localities it grows on soft, calcareous schist in alpine-subalpine habitats. Sarcogyne algoviae is already included in the checklist for Fennoscandia, originally based on a specimen from Finnmark in northernmost Norway (Santesson et al. 2004). That specimen, however, has broadly ellipsoid spores and stout paraphyses, c. 2.5 µm wide, and belongs to Polysporina urceolata (specimen in O, L-38325). Other literature or database records of S. algoviae from Norway must be considered unreliable but here we also confirm its presence in Norway.

Specimens examined.

NORWAY. Oppland: Dovre, Jønndalen, Mt Nonshaugen, S precipice of the mountain, NE of farm Jønndalen, alt. 700-800 m. 12 June 2008, Westberg 08-276 ( S F122564) Lom, Bøvertun, just W of the lake Bøvertunvatnet. Alt. 954 m. 12 June 2008, Westberg 08-165, 08-168, 08-169 ( S F122535, F122537); Lom, Runningsgrende, Klypa. Alt. 700-760 m. 61.7237°N, 8.0262°E. 28 June 2013, Westberg ( S F265202); Nordland: Vega Island, farm Dalen. 22 June 1974, Degelius V-683 ( UPS L-516318); Troms: Insula Rollöen. [undated], Norman ( UPS L-680378). SWEDEN. Härjedalen: Tännäs par., Mt Stora Mittåkläppen, the southern slope. 15 Aug. 1962, Santesson 14987b ( UPS L-516445); Jämtland: Åre par., Storlien. 24 July 1950, Magnusson 22128a ( UPS L-515993); Lule lappmark: Gällivare par., Vastenjaure. 4 Aug. 1965, Gilenstam 1186a ( UPS L-103743); Torne lappmark: Jukkasjärvi par., Björkliden, N side of the river Rakkasjohka, just N of the trail from Björkliden Fjällby to Nuolja, alt. 495 m. 68.4053°N, 18.6698°E. 6 Aug. 2013, Westberg ( S F265208); Latnjajaure field station, by the lake Latnjajaure c. 15 km W of Abisko. 68°20'N, 18°30'E, alt. 980-1000 m. 3 Aug. 1998, Westberg 2572 ( LD).

Figures

Figure 11. Sarcogyne algoviae. a Apothecia (S F 122537) b Apothecia (S L 2741, holotype) c Section of an apothecium showing a strongly carbonized margin and a colourless hypothecium (S F 122537). Scale: 1 mm (a-b); 100 µm (c).