Flora of New Zealand Series

A. fusconigrum (Nyl.) Müll. Arg., Bull. Herb. Boissier 2, App. 1: 84 (1894).

Arthonia fusconigra Nyl., Annls Sci. nat. Bot. sér. 4, 11: 245 (1859).

Arthothelium fusconigrum f. endophoeniceum Zahlbr., Denskschr. Akad. Wiss. Wien math.-naturwiss. Kl. 104: 260 (1941).

A. fusconigrum f. endophoeniceum. Lectotype: New Zealand. North Auckland, Rangitoto I., on Avicennia resinifera. L.B. Moore, ZA 14, CHR 241774!

Thallus whitish or glaucous-grey, continuous, smooth, coriaceous or minutely wrinkled, in patches 1-3 cm diam. Ascocarps sessile to subinnate, black or dark red-brown, rounded to suboblong, 1 mm wide or less, flat to convex. Ascospores colourless at first, brownish at maturity, ovoid-oblong, submuriform, 27-30 × 11-14 µm.

N: Rangitoto I. - sine loco, Charles Knight (H-NYL).

Pantropical