The Lichenologist

Table of Contents - 1986 - Volume 18, Issue 04  

Research Article

Rhizocarpon Santessonii, A New Parasitic Lichen from Norway

E. Timdala1

a1 Botanical Museum, University of Oslo, Trondheimsveien 23 B, N-0562 Oslo 5, Norway

Abstract

Rhizocarpon (subgenus Phaeothallus) santessonii sp. nov. is described from Norway. The species grows immersed in the areolae of Tremolecia atrata when young and later develops autonomous areolae. The species is further characterized by a yellowish grey thallus containing an unidentified pigment, a non-amyloidmedulla, and 1-septate spores which are persistently colourless or become unevenly brownwith age.

(Accepted April 25 1986)