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THE PARMELIA QUERCINA GROUP IN NORTH AMERICA
Author(s) -
Culberson William L.
Publication year - 1961
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1961.tb11621.x
Subject(s) - biology , botany , triterpene , lichen , medicine , alternative medicine , pathology
C ulberson , W illiam L. (Duke U., Durham, N. C). The Parmelia quercina group in North‐America. Amer. Jour. Bot. 48(2): 168–174. Illus. 1961.—A study of the morphology and lichen chemistry of the North American members of the Parmelia quercina complex leads to the recognition of 5 species: P. quercina (Willd.) Vain. (California), P. coronata Fée (Mexico), P. confoederata Culberson sp. nov. (southeastern United States), P. galbina Ach. (eastern North America) and P. livida Tayl. (eastern and south central United States). All species produce the depside atranorin. P. quercina and P. confoederata also produce the depside lecanoric acid, and the closely related P. coronata produces gyrophoric acid, chemically similar to lecanoric acid. P. galbina contains a previously reported but chemically unknown depside, the aliphatic triterpene zeorin, and an unidentified yellow pigment and is thus chemically very distinct from P. livida which produces an unknown substance reported here for the first time. Species descriptions, synonymy and distribution maps are provided.