Dimerella lutea (Dicks.) Trevis.
Lichen luteus Dickson, Fasc. pl. cryptog. brit. 1: 11 (1785).
Lecidea planella Nyl., Bull. Soc. linn. Normandie sér. 2, 2: 84 (1868).
L. familiaris Nyl., Lich. N.Z.: 83 (1888).
Biatorinopsis pallidula Müll. Arg., Bull. Soc. r. Bot. Belg. 31: 34 (1892).
Catillaria perpulchra Zahlbr., Denkschr. Akad. Wiss. Wien math.-naturwiss. Kl. 104: 313 (1941).
Lecidea familiaris. Holotype: New Zealand. Sine loco. C. Knight 307, 1867, H-NYL 20460!
Biatorinopsis pallidula. Lectotype: New Zealand. Sine loco. C. Knight, G!
Catillaria perpulchra. Holotype: New Zealand. Otago, saddle between Leith Valley and Waitaki near Dunedin, in forest remnant on Hemitelia smithii. J.S. Thomson A92, W - not seen.
Thallus thin, spreading to 8 cm diam., pale yellowish-green to dark olive-green in shaded situations, varnish-like, ± continuous or cracked-areolate or wanting. Apothecia common and conspicuous, sessile, orbicular, disc plane, orange, shallowly concave at first becoming convex with age, margins pale flesh-coloured, prominent, entire or flexuose, occasionally with a faint pale pruina in older fruits. Ascospores fusiform-ellipsoid, 6-12(-14) × 2-4 µm.
N: North Auckland to Wellington. S: Nelson to Southland. St: Throughout, very widespread in damp, humid low-light habitats on bark or twigs or overgrowing bryophytes. It is particularly characteristic of tree-fern brush.
Cosmopolitan
