Rinodina corticola (Arnold) Arnold
* Account prepared by Dr H. Mayrhofer (Graz).
R. teichophila var. corticola Arnold, Verhandl. zool.-bot. Ges. Wien 18: 952 (1868).
Thallus very thin, whitish or glaucous, areolate or dispersed, I+ pale blue, corticolous. Apothecia lecanorine, scattered, sessile, to 0.4 mm diam., disc plane, dark brown becoming black. Hymenium 75-90 µm tall. Epihymenium red- brown. Hypothecium colourless. Ascospores of Physcia -type, 18-24 × 9-11 µm. Chemistry: Atranorin, chloratranorin, zeorin.
S: Canterbury (Cass).
Cosmopolitan
