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1 December 2010 Acarospora orcuttii (Acarosporaceae), a rare terricolous lichen from southern California
Kerry Knudsen
Author Affiliations +
Abstract

The terricolous Acarospora orcuttii is described from three historical collections from San Diego in 1883 and 1884 by C.R. Orcutt in the Farlow Herbarium. The species looks similar to A. fuscescens, but differs in the absence of gyrophoric acid, thinner paraphyses as well as several other characters. The species may be extinct. Terricolous lichen habitats are rare and threatened throughout coastal southern California. It is hoped some remaining populations may be discovered.

Kerry Knudsen "Acarospora orcuttii (Acarosporaceae), a rare terricolous lichen from southern California," The Bryologist 113(4), 713-716, (1 December 2010). https://doi.org/10.1639/0007-2745.113.4.713
Received: 3 March 2010; Accepted: 1 September 2010; Published: 1 December 2010
KEYWORDS
Biological soil crusts
extinction
extirpation
morphology
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