China, Beijing, soil, 2010, isolated by B.D. Sun, Holotype CBS H-22831, culture ex-holotype CBS 141833= DTO 349-E7.

Turkey, Zonguldak, soil, 2014, isolated by Rasime Demirel, culture DTO 307-C1. Maroc, soil, 2005, isolated by J. Dijksterhuis, culture CBS 118436 = DTO 004-D8.

MN864269. Alternative identification markers: BenA = MN863338, CaM = MN863315, RPB2 = MN863328.

Talaromyces brevis produces short conidiophores measuring 15–50 × 3–4 μm, yellow to orange ascomata on OA and spiny ascospores measuring 3.5–4.5 × 3–4 μm.

Talaromyces section Talaromyces

CYA 30–31; CYA 30 °C 28–30; CYA 37 °C 25–26; MEA 50–51; MEA 30 °C 57–60; OA 39–43; YES 42–43; CREA 13–14; CYAS No growth; DG18 13–15.

CYA 25 °C, 7 d: Colonies moderately deep, sulcate; margins entire; mycelium white and flesh (37); texture floccose; sporulation sparse; conidia en masse white; soluble pigments absent; exudates absent; reverse ochreous (44). MEA 25 °C, 7 d: Colonies moderately deep, plane; margins entire; mycelium white and primrose (66); texture floccose; sporulation sparse; conidia en masse white to greyish yellow-green (68); soluble pigments absent; exudates absent; reverse ochreous (44). YES 25 °C, 7 d: Colonies moderately deep, sulcate; margins entire; mycelium white; texture floccose; sporulation absent; soluble pigments absent; exudates absent; reverse ochreous (44). DG18 25 °C, 7 d: Colonies moderately deep, slightly raised at center, plane; margins entire; mycelium white; texture floccose; sporulation moderately dense; conidia en masse yellow-green (71); soluble pigments absent; exudates absent; reverse greyish yellow-green (68). OA 25 °C, 7 d: Colonies moderately deep, plane; margins entire; mycelium primrose (66); texture floccose; sporulation absent; soluble pigments absent; exudates absent; reverse primrose (66). Ascomata present. CREA 25 °C, 7 d: Moderate growth, acid production present.

Conidiophores monoverticillate and biverticillate; stipes smooth, 15–50 × 3–4 μm; metulae 3–5, divergent, 10–15 × 2.5–3 μm; phialides 4–6, flask-shaped, 9–13 × 2–4 μm; conidia smooth, subglobose to fusiform, 3–4(–5) × 2.5–3.5(–4.5) μm. Ascomata maturing after 2–3 wk of incubation on OA, yellow to orange, globose to subglobose, 400–550 μm; ascospores ellipsoidal, spiny, 3.5–4.5 × 3–4 μm.

Talaromyces brevis is morphologically and phylogenetically close to T. liani, but the latter produces larger ascospores measuring 4–6 × 2.5–4 μm and does not produce acid on CREA (except T. liani CBS 118885 produces very weak acid) (Yilmaz et al. 2014).

Latin, brevis, refers to its short conidiophores.