COLLECTION EXAMINED: NEW ZEALAND: WELLINGTON: 198172, Waikanae, Waikanae River estuary, G, S. Ridley, 11 Feb. 1982, holotype, Phaeosphaeria wakanae, PDD 50261.

Ascocarps scattered, superficial, depressed ellipsoidal, glabrous, 200-250 µm long, 150-200 µm wide, 100-125µm high. Beak central, terete, 25-35 µm long, 45-55 µm wide. of 5 or 6 layers of brown polygonal 4-6 x 4-6 µm cells around a 20-25 µm diameter ostiole, without periphyses. Ascocarp wall surface a textura angularis. Wall in longitudinal section laterally uniformly 10-12 µm thick of 3 or 4 layers of polygonal brown 6-8 x 4-6 µm pseudoparenchyma cells. Physes numerous, 2-3µm wide, with thin septa at 10- to 15- µm intervals, without guttules, without slime coating . Asci numerous, in a broad hymenium, cylindrical, 50-60 x 10-12 µm, short-stalked, with 8 overlapping linearly biseriate ascospores. Ascospores fusiform, L/W 4.2, straight or slightly curved, 20-24 x 5-5.5 µm, 3-septate in sequence 2:1:2, first septum slightly constricted, median (0.50), not constricted at other septa, with dots at ends of septa, second cell from apex, enlarged towards base, hyaline, greenish to pale yellowish, with guttules. smooth, with a sheath, 2.5-4 µm wide.

Host: Decorticated wood.

The ascospores are mainly colorless and resemble those of Massarina microspora Pass. but are consistently longer. The new combination is proposed to reflect this affinity.