Flavoplaca microthallina (Wedd.) Arup, Frödén & Søchting

in Arup & al., Nord. J. Bot., 31: 46, 2013. Basionym: Lecanora microthallina Wedd. - Mém. Soc. Imp. Sc. Nat. Cherbourg, 19: 276, 1875.
Synonyms: Caloplaca irregularis H. Magn.; Caloplaca microthallina (Wedd.) Zahlbr.; Physcia microthallina (Wedd.) Arnold; Placodium microthallinum (Wedd.) H. Olivier
Distribution: C - Sar.
Description: Thallus crustose-microsquamulose, episubstratic, lemon-yellow to yellow-orange, consisting of scattered to imbricate, 0.3-0.5(-2) mm mm wide, rounded, flat to convex, sometimes isidia-like areoles/squamules, forming up to 2-3 cm wide patches, often on the thalli of maritime Hydropunctaria-species. Thallus paraplectenchymatous with thin-walled cells. Apothecia zeorine, yellow-orange, sessile and constricted at base, 0.4-1.2(-1.6) mm across, with a flat to convex disc, a paler, minutely crenulated proper margin, and a conspicuous, mostly uneven to crenulate thalline margin. Thalline exciple 25-125(-175) μm wide; proper exciple (25-)40-60(-75) μm wide, of radiating, thick- walled, tightly packed hyphae; epithecium yellow-orange, granular, K+ red; hymenium colourless, 75-90(-100) μm high; paraphyses simple or sparingly branched, somewhat moniliform in upper part, 1-2 μm thick at mid-level, the apical cells 3-6(-7) μm wide; hypothecium colourless, 30-80 μm high, rarely inspersed with oil droplets. Asci 8-spored, cylindrical-clavate, Teloschistes-type. Ascospores 1-septate, polarilocular, hyaline, ellipsoid, (10-)12-15(-17) x (4-)6-8 µm, the septum 3-6 µm thick ( c. 1/4 of spore length). Pycnidia immersed, orange. Conidia narrowly ellipsoid, 2.5-3.2 x 1-1.2 μm. Photobiont chlorococcoid. Spot tests: thallus and apothecia K+ red, C-, KC-, P-. Chemistry: thallus and apothecia with parietin (major), fallacinal, emodin, teloschistin and parietinic acid (minor), corresponding with chemosyndrome A of Søchting (1997).
Note: a mainly Atlantic species in Europe, also known from North America, confined to the salt-spray belt, in the mesic supralittoral zone where it often grows on Hydropunctaria-species; in Italy it is known from a single station in northwestern Sardegna (Punta Falcone).
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
paras Hydropunctaria
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: extremely rare
Dry mediterranean belt: absent

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


Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.


Source: http://www.stridvall.se/la/galleries.php



Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[19598], Bulgaria, Pontus, distr. Burgas, in litore prope pagum Lozonec, alt. 1-2 m, ad scopulos siliceos. Leg. A. Kiszely & A. Vezda, 15.08.1975. VEZDA: LICHENES SELECTI EXSICCATI NR. 1361.


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_F/Texte_F_1/Flavoplaca_microthallina.htm
France, Siouville-Hague, Le Mont St Pierre, Le Fort, alt. 20 m - Manche
20/5/2016


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_F/Texte_F_1/Flavoplaca_microthallina.htm
France, Siouville-Hague, Le Mont St Pierre, Le Fort, alt. 20 m - Manche
20/5/2016


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_F/Texte_F_1/Flavoplaca_microthallina.htm
France, Siouville-Hague, Le Mont St Pierre, Le Fort, alt. 20 m - Manche
20/5/2016


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_F/Texte_F_1/Flavoplaca_microthallina.htm
France, Siouville-Hague, Le Mont St Pierre, Le Fort, alt. 20 m - Manche
20/5/2016