Caloplaca veneris Cl. Roux & Nav.-Ros.

Bull. Soc. linn. Provence, 43: 100, 1992.
Synonyms:
Distribution: S - Pugl (Nimis & Tretiach 1999).
Description: Thallus crustose, episubstratic, chalky white to pale grey, rimose-areolate, 0.05-0.2 mm thick, rarely endosubstratic and poorly evident, usually poorly delimited. Areoles 0.2-0.5 mm wide, angular, usually flat, the surface often finely cracked. Apothecia biatorine/zeorine, 0.2-0.7(-0.9) mm across, bright orange, 1-2(-3) per areole, at first concave and immersed, then sessile and constricted at base, with a flat to slightly convex, rough disc, and a 0.05-0.15 mm thick, smooth, concolour or paler proper margin. Thalline margin absent or developed only at the base of the apothecium, rich in algal cells; proper margin prosoplectenchymatous, with a 20-30 μm thick cortex and a colourless medulla of radially arranged hyphae; epithecium orange, granular, 8-20 μm high, K+ red; hymenium colourless, 50-80 μm high; paraphyses simple or forked, 1.5-2 μm thick at mid-level, the apical cells 4-6 μm wide; hypothecium colourless, prosoplectenchymatous. Asci 8-spored, cylindrical-clavate, Teloschistes-type. Ascospores 1-septate, polarilocular, hyaline, ellipsoid, (8-)9-13 x 5-6(-7) μm, the septum (2-)3-4(-5) μm thick. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-; apothecia K+ red. Chemistry: thallus without lichen substances; apothecia with unidentified anthraquinones.
Note: a recently-described species of calcareous rocks, probably more widespread along the Mediterranean coasts.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Taxon bound to maritime-coastal situations

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: very rare


pH of the substrata:

(info)

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5

Solar irradiation:

(info)

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5

Aridity:

(info)

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5

Eutrophication:

(info)

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5

Poleotolerance:

(info)

0

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Altitudinal distribution:

(info)

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5





Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (22590)
2001/11/19



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0080895], Greece, South Aegean, Cyclades Archipelago, Santorini islands, Thira, Mt. Arkhangelos, between the chapel and the top; scarce dwarfscrub on slope with andesitic lava outcrops, 36°21,5' N, 25°23,5' E, 150 m. Leg. H. Sipman (nr. 29282-a) & Th. Raus, 26.05.1990, det H. Sipman 1999.