Calvitimela perlata (Haugan & Timdal) R. Sant, 2004

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 : 37-38

Calvitimela perlata (Haugan & Timdal) R. Sant, 2004

Calvitimela perlata (Haugan & Timdal) R. Sant. Lichen-forming and lichenicolous fungi of Fennoscandia: 73. 2004.

Basionym.

Tephromela perlata Haugan & Timdal, Graphis Scripta 6(1): 22 (1994).

Holotype.

NORWAY. Sør-Trøndelag: Oppdal municipality, Drivdalen, by the rapids in the lower part of the river Kaldvella, 62°17'N, 9°35'E, alt. 940-980 m, exposed rock face in the subalpine region. 23 July 1993, E. Timdal 7535 ( O L-125!), TLC: rangiformic acid, norrangiformic acid, unknown substances.

Distribution.

New to Sweden. The species was previously known only from Norway and Greenland ( Haugan and Timdal 1994). It resembles the more common C. aglaea (Sommerf.) Hafellner, but differs in forming white areolae (Fig. 4 ), slightly longer ascospores (11.5-17 × 5-7.5 µm; Haugan and Timdal 1994), and in the presence of rangiformic and norrangiformic acids in the thallus. In C. aglaea , the areolae are usually pale yellow, the ascospores shorter (9-13.5 × 5-7.5 µm), and the thallus contains atranorin, bourgeanic acid, usnic acid (rarely lacking), and sometimes stictic acid ( Haugan and Timdal 1994).

In Norway, the species grows on sun-exposed, more or less sloping rock surfaces, often where water is trickling or near rivers or waterfalls in the subalpine and alpine regions. The Swedish locality is a boulder in the alpine region.

Specimen examined.

SWEDEN. Torne Lappmark: Låktatjåkka, 68°24.87'N, 18°19.07'E, alt. 640 m, steep face of boulder in the low alpine region. 8 July 2014, Timdal 13464-1 ( O L-195661), TLC: rangiformic acid (major). norrangiformic acid (minor), unknown substances (minor).

Figures

Figure 4. Calvitimela perlata (O L- 195661). Scale: 5 mm.