Hyphae smooth, hyaline to brown, sometimes aggregated into strands up to about 5 hyphae wide. Strands of grouped hyphae sometimes arranged in small coils, with conidiogenous cells held on the outside of these coils. Conidiogenous cells terminal and lateral, mostly monophialidic, rarely with 2–3 conidiogenous cells held on a one-celled, short-cylindric conidiophore. Conidiogenous cells 9.5–17  2–3 µm, hyaline, Type I and Type II (sensu Mostert et al. 2006), subcylindrical to elongate-ampulliform, often slightly swollen at base, not constricted; conidiogenous locus with non-flaring collarette about 1–1.5 µm long and wide. Conidia 4.0–5.5  1.5–2 (–2.5) µm, oblong-elliptic, straight or irregularly curved, ends broadly rounded, 0–septate, hyaline. Conidia on agar surface 6.5–9 (–12)  1.5–2.5 µm, cylindric, curved, allantoid, 0–septate, hyaline. Cultural characteristics: Colonies on MEA 30–32 mm diam. after 16 days, aerial mycelium cottony, uniform in height, pale greyish-green (28B2), with scattered, irregular pinkish patches, margin entire. PDA 18–19 mm diam. after 16 days, aerial mycelium cottony, sparse towards margin, greyish-red (7B2), white to margin, agar surface undulate with radiate ridges, margin entire. OA 20–21 mm diam. after 16 days, aerial mycelium cottony, in ropey upright strands, pale bluish grey (20C2) with irregular greyish red patches, yellow in reverse, yellow pigment diffusing across agar, margin slightly and irregularly scalloped.

In mycelio aerio hyphae singulae vel ad 5 fasciculatae, plerumque hyalinae, laeves. Conidiophora nulla. Phialides 9.5–17  2–3 µm, terminales vel laterales, praecipue typi I vel typi II, cylindricae vel elongato-ampulliformes. Conidia 6.5–9 (–12)  1.5–2.5 µm, oblongo-ellipsoidea, hyalinae, 0–septatae; in agaro 6.5–9 (–12)  1.5–2.5 µm, plerumque allantoidea.

Holotypus: New Zealand, Auckland, Whenuapai, on Vitis berlandieri x V. riparia hybrid rootstock, vascular staining of living wood, A. Graham ES68, 21 Mar 2007, ICMP 17421 (dried culture from holotype, PDD 93586).