A new species of Psoroma (Pannariaceae, lichenized Ascomycotina) from Tierra del Fuego, Argentina

Psoroma saccharatum Scutari & Calvelo (Pannariaceae, lichenized Ascomycotina), from Tierra del Fuego (Argentina), is described as new. It is characterized by the small, areolate, subendolithic thallus extending by means of a stolon-like prothallus, the sugary, fissured upperside, the stratified...

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Bibliographic Details
Published in:Annales botanici fennici 1995-01, Vol.32 (1), p.55-61
Main Authors: Scutari, Nora C., Calvelo, Susana
Format: Article
Language:English
Subjects:
Algae
Biological taxonomies
Holotypes
Hyalin
Hyphae
Lichens
New species
Parasitism
Spores
Thallus
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Description
Summary:Psoroma saccharatum Scutari & Calvelo (Pannariaceae, lichenized Ascomycotina), from Tierra del Fuego (Argentina), is described as new. It is characterized by the small, areolate, subendolithic thallus extending by means of a stolon-like prothallus, the sugary, fissured upperside, the stratified cortex with well developed epinecral layer, the basal, lateral to overlapping cephalodia, and the rounded spores with roughened epispore. The new species is the host of a parasitic species of Caloplaca Th. Fr.
ISSN:0003-3847
1797-2442