NOTES: Nectriopsis anthostomellicola is characterised by being associated with an unidentified and immersed species of Anthostomella growing on Freycinetia banksii. The ascomata are small, pale orange, globose, and composed of a narrow layer of simple, thin-walled cells. A small group of ascomata encircles the host ostiole and is always surrounded by hyphal tissue, which often forms fasciculate hairs. Of the 43 species of Nectriopsis treated by Samuels (1988a) only N. squamulosa (Ellis) Samuels and N. epimyces Samuels are associated with immersed ascomycetes. In N. squamulosa the ascomata are similar to N. anthostomellicola in being thin-walled, smooth, yellow to yellow-orange and surrounded by hyphae. However, the hyphae do not form erect, fasciculate hairs and the ascospores are slightly smaller (6–11 × 1.5–3 µm) and smooth (Samuels, 1988a). In N. epimyces the perithecia are also surrounded by white mycelium, and have similar sized asci (27–50 × 5.5–8.5 µm) and ascospores (10–16.2 × 2–3.5 µm). However, the ascospores are smooth, the hyphae surrounding the perithecia do not form erect, fasciculate hairs, the apex of the perithecia is formed of hyphal elements that merge with the periphyses and the perithecial walls are somewhat thickened (Samuels, 1988a).