Punctelia stictica (Delise ex Duby) Krog (1982: 291)

Elvebakk, A., Bjerke, J. W. & Støvern, L. E., 2014, Parmelioid lichens (Parmeliaceae) in southernmost South America, Phytotaxa 173 (1), pp. 1-30 : 11

Punctelia stictica (Delise ex Duby) Krog (1982: 291)

Punctelia stictica was first reported from Argentina and Chilean Tierra del Fuego by Stenroos (1991). The species has an essentially amphi-tropical distribution pattern ( Stenroos 1991), and is primarily a temperate species, but extends to the boreal zone in Europe (map by Krog 1970) and the anti-boreal zone in Tierra del Fuego. Stenroos (1991) listed three localities from the Ushuaia area. It is reported here with 18 new collections, concentrated to the Patagonian steppe areas, where the species is very common. In addition to atranorin and gyrophoric acid, all our samples contain an unidentified substance.

Specimens examined: CHILE.XII REGIÓN DE MAGALLANES: Parque Nacional Torres del Paine , Lago Nordenskjöld S , 1 km W of Mirador Lago Nordenskjöld , 51 ° 02’30”S, 72 ° 56’W, 70 m, on pebbles, 1 Dec 2000, Elvebakk, A. 00:869 ( TROM) ; 00:861 ( TROM); 1.5 km N of Salto Grande , 51 ° 03’30”S, 73 ° 02’W., 80 m, on rocks, richly fertile, 7 Dec 1995, Elvebakk, A. 95:512 ( TROM) ; 0.5–1 km N of Salto Grande , 51 ° 04’S, 73 ° 02’W, 100 m, on rocks, Nov 1995, Elvebakk, A. 95:463 ( TROM) ; 3 km SW of Guardería Laguna Amarga , 51 ° 00’S, 72 ° 50’W, 2050 m, on rocks, 15 Mar 1992, Elvebakk, A. 92:053 ( TROM) ; 2 km NW of Guardería Laguna Amarga , 50 ° 59’30”S, 72 ° 49’W, 150 m, on sun-exposed rocks, Nov 1995, Elvebakk, A. 95:457 ( TROM) ; 1.5 km SW of Guardería Laguna Amarga , 50 ° 59’30”S, 72 ° 48’W, 100 m, on an exposed rock outcrop, 5 Jan 1996, Elvebakk, A. 96:073 ( SGO) ; 1.5 km N of E end of Lago Sarmiento Chico , 51 ° 03’S, 72 ° 56’W, 150–200 m, on rocks, 2 Nov 1995, Elvebakk, A. 95:440 ( TROM) ; Pudeto, 400 m E of the easternmost lake of Lagunas Mellizas , 51 ° 03’30”S, 72 ° 58’W, 80 m, on a slightly exposed rock near a very exposed outcrop 50 m N of the road, locally common, 3 Dec 1999, Elvebakk, A. 99:1033 ( TROM) ; 1.5 km SE of Laguna de los Cisnes , 51 ° 03’S, 72 ° 51’W, 2–300 m, on gravel on exposed very dry ridge, ass. with Physcia dubia , 3 Dec 1999, Elvebakk, A. 99:1051 ( TROM) ; Lago del Toro (L. Maravilla), La Península, on the ground on a forestless, rocky slope, 10 Mar 1941, Santesson, R. 6336 (S); Lago del Toro (L. Maravilla), Estancia Río Paine , on exposed rocks above the river, 15 Mar 1941, Santesson, R. 6541 (S); Seno Otway , 2 km NE of Punta Espólon , 52 ° 47’S, 71 ° 12’W, 5 m, on an erratic, andesite rock, 30 Nov 1999, Elvebakk, A. 99:906 ( TROM) ; Seno Skyring, Estancia María , on a block of stone in a grass heath, 28 Apr 1940, Santesson , R. 7050 (S); 7051 (S); Morro Chico , 52 ° 03’S, 71 ° 28’W, 200 m, on rocks in a NW-facing, protected slope, 28 Nov 1999, Elvebakk, A. 99:851 ( TROM) .