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Hypotrachyna afrorevoluta (Krog & Swinscow) Krog & Swinscow

Synonyms:

Parmelinopsis afrorevoluta (Krog & Swinscow) Elix & Hale



Family: PARMELIACEAE

Habitat: Oceanic zone

Description

    Thallus foliose, more or less adnate, orbicular, to 10 cm across (on rocks), lobes 1-6 mm wide, short, lobe apices widened, rounded to crenulate divided by sinuous axils, turned down at the tips, upper surface cortex delicate, easily cracked, white-grey, pale grey-bluish, pale grey-green, covered with marginal pustulate soralia leaving black scars when falling, and white to pale greenish granular soredia (never dark), lower surface glossy, brown-black with bright rhizines, black, rather long, simple or branched. Apothecia rare, semi-stalked, 0.5-0.8 cm diam., exciple crenulate/sorediate. Ascospores simple, ellipsoid, 11-19 x 6-12 µm. Photobiont: trebouxioid. Cortex : K+ yellow ; medullae : C+ pink, K-, KC+ dark pink, Pd-. Strong oceanic and thermophile trends, mainly on bark but common on rocks near the seashore in our prospection area. N.B. See Hypotrachyna britannica that gows exclusively on rocks in the coastal zone has dark blue-black soredia; some authors consider that this species is only a morph of Hypotrachyna afrorevoluta adapted to well-lit habitats. See also Hypotrachyna revoluta of which the soralia structure is less canonical, pale greenish and mainly marginal, the brown lobes lower surface has short rhizines, forked or branched.*







Hypotrachyna afrorevoluta Carnota La Coruña 1
Antonio Valero Risoto



Hypotrachyna afrorevoluta Carnota La Coruña 2
Antonio Valero Risoto



Hypotrachyna afrorevoluta Carnota La Coruña 3
Antonio Valero Risoto



Hypotrachyna afrorevoluta Carnota La Coruña 4
Antonio Valero Risoto



Hypotrachyna afrorevoluta Face inférieure
Antonio Valero Risoto



Hypotrachyna afrorevoluta Marge
Antonio Valero Risoto



Hypotrachyna afrorevoluta Face supérieure
Antonio Valero Risoto



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