New Taxa of Pyrenocarpous Lichens from the Sonoran Region

Othmar Breuss

doi:10.1639/0007-2745(2000)103[0705:NTOPLF]2.0.CO;2

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Othmar Breuss¹

¹Naturhistorisches Museum Wien, Botanische Abteilung, Burgring 7, Postf. 417, A-1014 Wien, Austria

Abstract

Three taxa of pyrenocarpous lichens from the Sonoran Region are described as new: Placidium lacinulatum var. erythrostratum is characterized by a reddish medullary layer and broadly ellipsoidal ascospores. It is known from Arizona, California, and Mexico. Placopyrenium insuetum from Mexico is recognized by its rosulate, brown, epruinose thallus. Verrucaria rubrocincta, yet known only from Arizona and Mexico, is characterized by an endolithic thallus and a reddish pigmented, dimidiate involucrellum.

Citation Download Citation

Othmar Breuss "New Taxa of Pyrenocarpous Lichens from the Sonoran Region," The Bryologist 103(4), 705-709, (1 December 2000). https://doi.org/10.1639/0007-2745(2000)103[0705:NTOPLF]2.0.CO;2

Received: 8 September 1999; Accepted: 1 March 2000; Published: 1 December 2000

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