Hypotrachyna flavovirens (Kurok.) Hale (1975: 37)

Elvebakk, A., Bjerke, J. W. & Støvern, L. E., 2014, Parmelioid lichens (Parmeliaceae) in southernmost South America, Phytotaxa 173 (1), pp. 1-30 : 22

Hypotrachyna flavovirens (Kurok.) Hale (1975: 37)

Hypotrachyna flavovirens (Kurok.) Hale was described with its holotype from southernmost Chile near Hotel Río Rubens, 50 km S of Puerto Natales ( Hale & Kurokawa 1968). Hale (1975) found it to be morphologically, but not chemically, identical with H. sinuosa , and hypothesized that the species was the product of hybridization between the latter and an unknown progenitor. Calvelo & Adler (2001), who reported eight collections of this species pair from Argentinian Tierra del Fuego and maintained the two entities as separate species, found traces of intermediate chemistry in parts of thalli. We have analyzed more than 20 samples and found all intermediates between the two major medullary chemotypes of protocetraric vs. norstictic and salazinic acids, and also found four samples with the deviating chemotype norstictic, stictic and constictic acids. Therefore, H. flavovirens is reduced to synonomy of H. sinuosa here.