Sarcographa labyrinthica (Ach.) Müll.Arg.
Glyphis labyrinthica Ach., Syn. Lich.: 107 (1814).
Thallus olivaceous, pale greenish or yellowish, thin or thick, ± continuous, uneven, wrinkled or smooth, matt, or shining and ± varnish-like in parts, in patches or bands, 2-5(-8) cm diam., corticolous. Apothecia scattered in raised, round to irregular, grey-white pseudostromata, 2-8 mm diam., surface of pseudostromata cracked, cracks elongate, subreticulate, radiating or anastomosing, black, margins whitish, slightly pulverulent. Ascospores 4-6-locular, linear-oblong to elongate-ellipsoid, 14-21 × 68 µm.
N: South Auckland (Kihikihi near Te Awamutu). On planted tree (? Fraxinus) in churchyard. First collected in New Zealand by J.K. Bartlett (18/7/1977). Still very poorly known in New Zealand, but probably more widely distributed in northern coastal and lowland forest, on smooth-bark trees.
?Pantropical
