Ramalina implexa (Nyl.) Krog

Acta Bot. Fenn., 150: 103, 1994. Basionym: Ramalina scopulorum var. implexa Nyl. - Syn. Lich.: 293, 1980.
Synonyms: Alectoria arabum auct. eur. non Dill. ex Ach.; Ramalina arabum auct. eur. non (Dill. ex Ach.) Meyen & Flot.; Ramalina usnea auct. eur.
Distribution: C - Tosc, Laz (Gigante & Petriccione 1995), Sar (Krog 1994, Spjut & al. 2020). S - Si (Krog 1994, Ottonello & Romano 1997).
Description: Thallus fruticose-filamentous, yellowish green, densely tufted to pendulous, with numerous branches arising from closely adjacent basal holdfasts and a few short lateral branches, often covering very large surfaces. Branches up to 10 cm long, in average c. 1(-2) mm wide, tangled and irregularly recurved, sometimes slightly flattened, ribbon-like and to 3 mm wide at base, subterete and often hook-shaped at tips, the surface smooth or more or less foveate or reticulately ridged, with elliptical to linear, paler pseudocyphellae. Paraplectenchymatous cortex absent; peripheral chondroid tissue well-developed, forming a continuous cylinder of variable thickness; medulla dense, without chondroid strands. Apothecia not seen. Photobiont chlorococcoid. Spot tests: cortex K-, C-, KC+ yellowish, P-; medulla K+ yellow turning orange-red, C-, KC+ red, P+ orange-red. Chemistry: cortex with usnic acid; medulla with salazinic acid.
Note: a mainly Mediterranean lichen found on siliceous, much more rarely calcareous rocks in coastal sites with frequent fog and/or exposed to humid maritime winds; widespread and locally abundant in the small siliceous islands (a stunted specimen in TSB is on limestone).
Growth form: Fruticose

Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by thallus fragmentation
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: very rare
Dry mediterranean belt: absent

pH of the substrata:

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(info)

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
Herbarium samples
Index Fungorum GBIF

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Ramalina_implexa.htm
France, 14/3/2014 - Île de Cavallo - Sur granite - alt. 29 m - Corse



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5975)
2001/12/09
detail of main branch with pseudocyphellae



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5975)
2001/12/09


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Ramalina_implexa.htm
France, 14/3/2014 - Île de Cavallo - Sur granite - alt. 29 m - Corse


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Ramalina_implexa.htm
France, 14/3/2014 - Île de Cavallo - Sur granite - alt. 29 m - Corse



P.L. Nimis CC BY-SA 04
TSB 5975


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Ramalina_implexa.htm
France, 14/3/2014 - Île de Cavallo - Sur granite - alt. 29 m - Corse


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Ramalina_implexa.htm
France, 14/3/2014 - Île de Cavallo - Sur granite - alt. 29 m - Corse