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Stereocaulon evolutum Graewe

Synonyms:

Family: STEREOCAULACEAE

Habitat: Ubiquitous

Description

    Primary thallus soon excluded. Pseudopodetia, to 3-5 cm tall, erect, shrubby or in compact tufts, typically with the tips curved (palmate), strongly branched, with small and smooth squamules (phyllocladia), swollen and digitated-like with more or less cylindrical extensions, pale grey, pale grey-greenish. Apothecia rare, on pseudopodetia, terminal, flat, then slightly convex, brown-redish turningbrown-redish, exciple sometimes paler. Ascospores elongate, 3-septate. Photobiont: Trebouxioid. Chemical spot tests confusing unless done on filtering paper following acetone extraction: C-, K+ yellow, KC+ violet, Pd+/- faint yellow. On acid mossy rocks, notably schists. Easily confused with infertile specimen of Stereocaulon dactylophylum but the latter has more ascending -or less pendulous - branches, and is Pd+ orange.*







Stereocaulon evolutum Morgat 1
Michel DAVID



Stereocaulon evolutum MĂ©nez Meur 2
Alain GERAULT



Stereocaulon evolutum MĂ©nez Meur 1
Alain GERAULT



Stereocaulon evolutum Roc'h Trédudon
Michel DAVID



Stereocaulon evolutum MĂ©nez Meur 3
Joël QUERELLOU



Stereocaulon evolutum MĂ©nez Meur 4
Joël QUERELLOU



Stereocaulon evolutum MĂ©nez Meur 5
Joël QUERELLOU



Stereocaulon evolutum Apothécies Morgat 2
Michel DAVID



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