Anaptychia runcinata forme de l'ombre.

    Differs from the type by (i) its habitat: in shaded areas notably in the Abers region on sheltered rocks of the foreshore under the branches of bordering trees, (ii) its colours, pallid, greyish to brown-greyish. Seldom fertile. N.B. All intermediate forms between the 'shade' form and the brown one thriving on well-lit rocks may be found along the physical transition between the two zones.