A new species of Placocarpus (Verrucariaceae) from southern California

Author:

KNUDSEN Kerry,BREUSS Othmar,KOCOURKOVÁ Jana

Abstract

AbstractA new species, Placocarpus americanus, is described from the Santa Monica Mountains in Southern California. It is a juvenile parasite on Protoparmeliopsis muralis and differs from Placocarpus schaereri in having smaller non-halonate ascospores, a negative iodine reaction of the medulla, lack of inspersion of the medulla with small crystals, and having a thallus of dispersed areoles.

Publisher

Cambridge University Press (CUP)

Subject

Ecology, Evolution, Behavior and Systematics

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