ADDITIONAL SPECIMENS EXAMINED (all on Rhopalostylis sapida). NEW ZEALAND: Northland, Hokianga County, Omahuta State Forest, Samuels, 8 May 1983 (PDD 45798), second collection, Samuels, Matsushima & Petersen, 9 May 1983 (PDD 45799); Hokianga County, Waipoua State Forest, 30 May 1982 (PDD 44394), second collection, Samuels, Matsushima & Petersen, 12 May 1983 (PDD 45786, NY), third collection, Samuels 13 May 1983 (PDD 45777). Coromandel, Thames, Kauaeranga Valley, Samuels & Petersen, 1 May 1983 (PDD 46262, 46263).

Perithecia immersed in host tissue below slightly raised and blister-like, non-blackened lesions with only minute black dots indicating the perithecial openings, solitary or gregarious; each surrounded by stromatic tissue that lacks definite orientation; forming within the hypodermic, 3-4 cell layers below the epidermis and with 1 cell layer of hypodermal cells below each perithecium or seated directly on the vascular tissue; with brown hyphal cells growing into underlying vascular tissues. Cells of stroma pseudoparenchymatous, 812 µm in greatest dimension, walls < 1 µm thick, brown. Perithecial body 220-280 µm long x ca. 125 µm high, with long axis parallel to the surface of the host and perpendicular to the ostiolar canal; ostiolar canal 110-175 µm long. Perithecial wall not easily distinguished from the surrounding stromatic tissue, consisting of a ca. 10 µm wide region of elliptical cells 12 x 4.5 µm, with walls < 1 µm thick and dark brown; perithecial papilla composed of 5 µm wide hyphal elements arranged in a palisade; ostiolar canal periphysate; periphyses arising from a tissue distinct from the paraphyses. Paraphyses persisting among mature asci or deliquescing, much branched and anastomosed, ca. 2 µm wide, cells 10-15 µm long. Asci (130-)165-235(-285) x (7-)13.519.7(22) µm, cylindrical, apical ring J+ Melzer's, wedge-shaped, 2-3 µm wide x 2-2.5 µm long; 8-spored, ascospores biseriate to multiseriate, completely filling each ascus or up to 50 µm of the ascal base devoid of ascospores. Ascospores (65)74-88(-95) x (5.5-)6-7.2(-8) µm, narrowly fusiform with ends apiculate but not ciliate, with a single, median septum, hyaline, smooth.
Anamorph. None known.

KNOWN DISTRIBUTION. New Zealand (North Island: Northland, Coromandel).

HABITAT. On leaf midrib of Rhopalostylis sapida.

Oxydothis sabalensis (Cooke) Petrak similis sed ascosporae differt, (65-)74-88(-95) x (5.5-)6-7.2(-8) µm.
Holotypus. PDD 45779.

HOLOTYPE. NEW ZEALAND: Northland, Hokianga County, vic. Mangamuka Bridge, Omahuta State Forest, at forest headquarters, on Rhopalostylis sapida, Samuels (83-507), 11 May 1983 (PDD 45779, Isotype NY).