Leucodermia vulgaris (Vain.) Kalb, 2015

Mongkolsuk, Pachara, Meesim, Sanya, Poengsungnoen, Vasun, Buaruang, Kawinnat, Schumm, Felix & Kalb, Klaus, 2015, The lichen family Physciaceae in Thailand-II. Contributions to the genus Heterodermia sensu lato, Phytotaxa 235 (1), pp. 448-450 : 448-450

Leucodermia vulgaris (Vain.) Kalb , comb. nov.

Mycobank MB 813834

Basionym: Anaptychia leucomelaena (L.) A. Massal. var. vulgaris Vain., Acta Soc. Fauna Fl. Fenn. 7(1): 128; Anaptychia vulgaris (Vain.) Kurok., Beih. Nova Hedwigia 6: 81 (1962). Heterodermia vulgaris (Vain.) Follmann & Redón, Willdenowia 6: 447 (1972). Type:— BRAZIL. Minas Gerais; Lafayette. Vain. Lich. Bras. Exs. 289 (Lectotype, selected by Kurokawa loc. cit.: 81, TUR-Vain. 7855!).

Remarks:—TLC was performed on the rather large type specimen, as well as our collections made near the type locality, as well as from Rio de Janeiro and São Paulo States and Peru. All specimens tested exhibit similar chemistry but japonene may be present (as in the type) or it may be absent.

Chemistry: Atranorin (major), zeorin (major), 7-chloroemodin (submajor), 5,7-dichloroemodin (minor), ± japonene (minor) and two unknown orange and violet pigments. In solvent A, the two pigments have the same R f value, and the common spot appeared violet after the plate was dried, while "vulgaris low" alone appeared pink. After H 2 SO 4 spray and charring, the common spot in A appeared pink like the "vulgaris low". However after H 2 SO 4 spray and charring, the "vulgaris high" appears very faintly violet or almost invisible in all three solvents, but "vulgaris low" appears pink in B' and C.

Selected specimens examined:— PERU. Cuzco: surroundings of Machu Picchu, on trees and shrubs alongside the railway track from Aguas Calientes to Cuzco, 20 October 1995, B. Marbach P 34 (herb. Kalb 40534) ; BRAZIL. Minas Gerais: Serra da Mantiqueira ; Vila Monte Verde, ca. 30 km E of Camanducaia, on Podocarpus , at the edge of a dark and humid rainforest along a rivulet, 1500 m, 22°50’ S, 46°00’W, 07–11 September 1978, K. Kalb & G. Plöbst (herb. Kalb 40532) ; BRAZIL. Rio de Janeiro: Serra da Mantiqueira ; Itatiaia, between Registro do Picú and Agulhas Negras, on bark of a tree at the edge a dense rainforest, 1900 m, 22°20’ S, 44°45’ W, 1. XI. 1978, K. Kalb & G. Plöbst (herb. Kalb 40533) ; BRAZIL. São Paulo: Serra do Mar; Serra de Paranapiacaba, ca 60 km SW of São Paulo, above Juquitiba, on deciduous trees in a light and humid rainforest along the Rio Juquiá , 700 m, 23°50’ S, 47°10’ W, 13-14 May 1978, K. Kalb & G. Plöbst (herb. Kalb 39841) .

III. The lichen genus Polyblastidium