Colony circular, dense, compact learn more with well-defined margin, numerous yellow crystals formed in the agar. Aerial hyphae abundant, often with subglobose thickenings to 6–11 μm terminally or along their length; forming a thick white to yellowish cottony mat, ascending to the lid of the Petri dish. Autolytic activity and coilings absent. Reverse yellow, orange, 4–5AB4–5, to orange-brown or yellow-brown, 5CD7–8. No distinct odour noted. Conidiation noted after 3 days; conidia produced in small numbers in wet to dry heads on scant solitary, cylindrical or subulate
phialides on aerial hyphae. Conidia (5–)6–15(–21) × (3.0–)4.0–6.7(–9.3) μm, l/w (1.1–)1.3–2.7(–3.9) (n = 30), variable in shape, ellipsoidal, oval, subglobose, oblong, broadly fusoid, or clavate, hyaline, smooth, eguttulate or rarely with few small guttules; scar indistinct or truncate; often adhering in small clusters. At 15°C colony coarsely zonate, with crystals and white cottony mat; no conidiation seen. On SNA after 72 h 4 mm at 15°C, 10 mm at 25°C; mycelium covering the plate after 13 days at 25°C. Colony circular, dense, with well-defined or irregular margin, becoming hairy by numerous, loosely disposed, long, dichotomously branched aerial hyphae ascending to the lid of the Petri dish along the Cytoskeletal Signaling inhibitor colony margin, with some thickenings 6–9(–15) μm. Autolytic excretions locally frequent, coilings absent. No diffusing pigment, no distinct odour noted. No chlamydospores seen. Conidiation
noted after 10 days. Conidia (examined after 14–28 days) produced in small numbers in minute wet to dry heads on solitary phialides or simple conidiophores on long aerial hyphae in mostly marginal, whitish, arachnoid to cottony areas. Conidiophores 2–5(–6.5) μm wide, of a main axis to 150 μm long, with few unpaired, often right-angled branches or phialides, apically with one, more rarely 2–3(–4) divergent phialides. Phialides (11–)22–43(–55) × (2.3–)3.0–4.0(–5.0)
μm, l/w (2.7–)6.5–13(–17), (1.7–)2.2–3.0(–3.5) μm wide at the base (n = 40), cylindrical or subulate, sometimes lanceolate or fusoid, mostly straight, equilateral, sometimes with a clamp-like widening on their base. Conidia (5–)6–16(–29) × (3.0–)4.0–6.5(–8.0) μm, l/w (1.2–)1.3–3.0(–5.0) (n = 70), hyaline, extremely variable in shape, mostly oblong to cylindrical, also ellipsoidal, subglobose, Adenylyl cyclase oval, pyriform, sometimes curved, smooth, eguttulate, scar indistinct or truncate; often adhering in clusters. Habitat: on forest litter in mixed forests dominated by conifers such as Picea abies. Distribution: North Europe, northern areas of Finland and Sweden. Holotype: Finland, Oulun Pohjanmaa. Haukipudas, Kello, Kalimeenkylä, Kalimeenoja, 1.5 km upstream of Saarela, in a spruce forest at the Suo-oja brook, 24 Aug. 1967, T. Ulvinen (OULU F 49597, isotype OULU F 49596; not examined). Material examined: Finland, Oulun Pohjanmaa, Kiiminki. Pikkuhalmeenmaa, Jolosmäki. In calcareous spruce forest. Grid 27°E 7228:445, elev. 45 m, on soil/leaf litter, 15 Aug.
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