Lecanora thysanophora, a Common Leprose Lichen in Eastern North America

Richard C. Harris; Irwin M. Brodo; Tor Tønsberg

doi:10.1639/0007-2745(2000)103[0790:LTACLL]2.0.CO;2

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Richard C. Harris,¹ Irwin M. Brodo,² Tor Tønsberg³

¹Cryptogamic Herbarium, New York Botanical Garden, Bronx, NY 10458-5126, U.S.A.
²Canadian Museum of Nature, P.O. Box 3443, Station D, Ottawa, Ontario K1P 6P4, Canada
³Department of Botany, University of Bergen, Allégaten 41, N-5007 Bergen, Norway

Abstract

Lecanora thysanophora R. C. Harris, n. sp. is described. It is a common lichen in eastern North America, most often found as a sterile corticolous crust, but apothecia are not uncommon when the species grows along streams. Besides being recognizable in the field, it is distinctive chemically, containing usnic acid, zeorin, often porphyrilic acid, and several species-specific terpenoids.

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Richard C. Harris, Irwin M. Brodo, and Tor Tønsberg "Lecanora thysanophora, a Common Leprose Lichen in Eastern North America," The Bryologist 103(4), 790-793, (1 December 2000). https://doi.org/10.1639/0007-2745(2000)103[0790:LTACLL]2.0.CO;2

Received: 15 November 1999; Accepted: 22 June 2000; Published: 1 December 2000

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