Nephromopsis pallescens (Shaer.) Y. S. Park var. pallescens
Nomenclatural data
Bryologist 93: 122, 1990. – Cetraria pallescens Schaer., in Moritzi, Syst. Verzeichn.: 129, 1845–1846. Type: [Indonesia] Java, Mt. Pangerango, H. Zollinger 449 (G! – holotype). – Platysma pallescens (Schaer.) Nyl., Mém. Soc. Sci. Nat. Cherbourg 5: 100, 1858. – Cetrariopsis pallescens (Schaer.) Randlane & A. Thell, Cryptog. Bryol. Lichénol. 16: 42, 1995. – Sticta wallichiana Taylor, London J. Bot. 6: 177, 1847. – Type: Nepal, N. Wallich (FH – holotype, G 2003/1!, G 2003/2!, PC! – isotypes). – Parmelia wallichiana (Taylor) Nyl., Mém. Soc. Sci. Nat. Cherbourg 5: 105, 1858. – Platysma leucostigmeum var. wallichianum (Taylor) Nyl., Syn. Meth. Lich. I: 306, 1860. – Platysma wallichianum (Taylor) Nyl., Flora 52: 443, 1869. – Cetraria wallichiana (Taylor) Müll. Arg., Flora 71: 139, 1888. – Cetrariopsis wallichiana (Taylor) Kurok., Mem. Natl. Sci. Mus. Tokyo 13: 140, 1980. – Ahtia wallichiana (Taylor) M. J. Lai, Quart. J. Taiwan Mus. 33: 220, 1981 (nom. illeg.). – Cetraria sulphurea Mont. & Bosch, in Montagne, Syll. Gen. Sp. Crypt.: 322, 1856 (not validly published). – Orig. coll.: [Indonesia] Java, F. W. Junghuhn. – Cetraria teijsmannii (“Teysmanni”) Mont. & Bosch, in Montagne, Syll. Gen. Sp. Crypt.: 474, 1856. – Type: [Indonesia] Java, J. E. Teijsmann. – Platysma teijsmannii (“Teysmanni”) (Mont. & Bosch) Nyl., Mém. Soc. Sci. Nat. Cherbourg 5: 100, 1858.
Morphology
Description – see Randlane et al. (1995).
Typical characters. Thallus dorsiventral, upper surface greenish yellow, lower surface white to yellow. Lobes rather wide (8–15 mm). Pseudocyphellae on the lower surface on special plug-like outgrowths. Apothecia small and numerous, mainly laminal.
Chemistry
Contains usnic acid in the cortex; alectoronic and/or lichesterinic, protolichesterinic acids in the medulla.
Remarks
The species which is well-known and easily recognized in its typical form by the laminal apothecia which is unusual for cetrarioid lichens. Even so, some specimens have ascoma developed mainly along the margins of the upper surface with only a few laminal apothecia. In such specimens the lower surface should be checked for the presence of pseudocyphellae on special outgrowths – especially in the central part of the thallus.
Ecology and distribution
Distributed in China, India, Indonesia, Japan, Nepal, Papua New Guinea, Russia, South Korea and Thailand (• on fig.). In China it has been found in Sichuan, Taiwan, Xizang and Yunnan provinces (Wei 1991). Corticolous on coniferous (Larix, Pinus) and deciduous (Carpinus, Populus, Salix, Sorbus, Quercus) trees or shrubs (Berberis, Rhododendron, Spirea) in mountainous forests at medium and high altitudes (1200–4300 m).
Literature
Randlane, T. & Saag, A. 1992. | Randlane, T. & Saag, A. 1998. |Randlane, T. & Saag, A. 2004. | Randlane, T., Saag, A. & Obermayer, W. 2001. | Randlane, T., Saag, A., Thell, A. & Kärnefelt, I. 1994. | Randlane, T., Thell, A., & Saag, A. 1995. | Thell, A., Randlane, T., Saag, A. & Kärnefelt, I. 2005.
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