Studies on the Lichen Parmotrema rigidum s. lat. from North and South America

Robert S. Egan; Robert Harms; Todd Widhelm

doi:10.1639/0007-2745(2005)108[0402:SOTLPR]2.0.CO;2

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Robert S. Egan,¹ Robert Harms,¹ Todd Widhelm¹

¹Department of Biology, University of Nebraska at Omaha, Omaha, NE 68182-0040, U.S.A. regan@mail.unomaha.edu

Abstract

In North America, the common and abundant coastal, corticolous species currently known as Parmotrema rigidum (Lynge) Hale, is shown to be morphologically distinct from the South American type and other South American representatives of the species based on both ascospore and conidial size. We describe the North American taxon as Parmotrema subrigidum Egan sp. nov., recognizing two chemical strains, one with atranorin and alectoronic acid and a second with atranorin, alectoronic, and norstictic acids.

Citation Download Citation

Robert S. Egan, Robert Harms, and Todd Widhelm "Studies on the Lichen Parmotrema rigidums. lat. from North and South America," The Bryologist 108(3), 402-405, (1 September 2005). https://doi.org/10.1639/0007-2745(2005)108[0402:SOTLPR]2.0.CO;2

Received: 10 March 2005; Accepted: 1 May 2005; Published: 1 September 2005

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