ITALIC 8.0

Gypsoplaca macrophylla (Zahlbr.) Timdal

Bibl. Lichenol., 38: 424, 1990. Basionym: Lecidea macrophylla Zahlbr. - in Handel-Mazzetti, Symb. Sinic., 3: 110, 1930

Synonyms:

Distribution:

Description: Thallus squamulose, monophyllous, olivaceous brown to brown, up to 3-4 cm wide. Upper cortex 70-200 µm thick, with thick-walled, anticlinally to irregularly arranged hyphae, with an epinecral layer; algal layer discontinuous; medulla white, containing crystals of oxalates, I-. Ascomata effuse, continuous with the thallus, laminal, often confluent and extending over the whole surface, red-brown, epruinose, without a margin. Proper exciple lacking; hymenium developing within the upper cortex, initially formed by branched and anastomosing, thin-walled paraphyses, then forming the asci. Asci 8-spored, clavate, surrounded by an amyloid, gelatinous sheath, with a well-developed, amyloid tholus with a deeper amyloid tube and usually an ocular chamber. Ascospores 1-celled, hyaline, ellipsoid to subglobose, 13-17 x 7-9 µm, not halonate. Pycnidia immersed, appearing as a faintly paler pore, with richly branched conidiophores producing conidia terminally. Conidia hyaline, bacilliform to asymmetrically bifusiform, 8-10 x c. 1.5 µm. Photobiont chlorococcoid. Chemistry: without lichen substances or with triterpenoids.

Note: on soil layers over calcareous schists or gypsum under periodically xeric conditions leading to steppe vegetation; widespread in the steppe-regions of Asia, with a single locality in the Eastern Alps. To be looked for in Italy, especially in the dry-continental Alpine valleys.

Growth form: Squamulose

Substrata: soil, terricolous mosses, and plant debris

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Subcontinental: restricted to areas with a dry-subcontinental climate (e.g. dry Alpine valleys, parts of Mediterranean Italy)

pH of the substrata:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (14308)
2001/11/24

Curtis Randall Björk CC BY-SA 4.0

British Columbia, Chilcotin Grasslands, Dog Creek area
Winter, 2011
Photographed from a specimen by Kasia Caputa, University of Northern British Columbia

Curtis Randall Björk – CC BY-SA 4.0

British Columbia, Chilcotin Grasslands, Dog Creek area Date: Winter, 2011 Photographed from a specimen by Kasia Caputa, University of Northern British Columbia