Ramalina siliquosa Chem. druidarum = Chem. c.
Ramalina druidarum W. L. Culb. p.p.
Chem c: C-, K- or K+ pale reddish, faint red (difficult to observe in the field), KC- or faint pale reddish, Pd-, UV+ blue. Small tufts, erect, branches strap-shaped, long, narrow towards apices, apices pointed or dichotomous, branches with small globose warts (pycnidia) usually scarce, apothecia very rare. Rather common on vertical walls of large acid rocks in the aerohaline zone and sometimes quite far inland (see: Ramalina siliquosa Chem. druidarum de l'intérieur des terres). May also be found on weakly acidic substrata, on granite or kersantite of old artifiacts (menhirs, dolmens and calvaries).