Intercalary phialides rare. Conidia (n = 90) broadly ellipsoidal, (3.7–)4.2–5.0(−6.0) × (2.5–)3.2–4.0(−4.5) μm, L/W

(1.0–)1.1–1.5(−1.9) (95% ci: 4.5–4.7 × 3.5–3.7 μm,. L/W 1.3–1.4), green, typically conspicuously tuberculate, less frequently tubercles few. Chlamydospores uncommon, terminal and intercalary, globose, ellipsoidal or pyriform. Etymology: ‘saturnisporopsis’ refers to morphological similarity to T. saturnisporum. Habitat: roots, branches. Known distribution: USA (OR), Sardinia. Holotype: USA, Oregon. Oregon Coast Range: 46°1′N, 123°4′W; elev. 420 m, from fumigated roots of Douglas Fir (Pseudotsuga menziesii) infected with Phellinus weirii, 1983, E. Nelson 15(BPI 882297; ex-type culture TR 175 = CBS 130751). Pritelivir Sequences: tef1 = JN182281, chi18-5 = JN182299, rpb2 = DQ857348. See Nelson et al. (1987), as No. 15. Additional culture: Italy, Sardinia, at the road SP17, between junctions to Burgos and Foresta di Burgos, on a branch ICG-001 supplier selleck kinase inhibitor of Quercus virgiliana, 5 Nov. 2009, W. Jaklitsch S19 = CBS 128829. Sequences: tef1 = JN175580, cal1 = JN175404, chi18-5 = JN175463. Comments: Colonies of T. saturnisporopsis strains S19 and TR 175 are different from

each other. Most notably, colonies of strain S19 grown at 30–35°C have a highly dissected margin and relatively slow rate of growth, whereas colonies of Tr 175 have a uniform colony margin and a much faster rate of growth. The appearance of colonies in S19 grown at higher temperature suggests that it is aberrant. The description of growth rates and colony morphology is drawn mainly from TR 175. Trichoderma saturnisporopsis belongs to a clade that includes H. novae-zelandiae and the phylogenetic species G.J.S. 99–17 (Figs. 2i and 16; Druzhinina et al. 2012). This clade is basal in the Longibrachiatum Clade. Its members differ

from typical species of the Longibrachiatum Clade in the formation of divergent whorls of phialides or, in the case of phylogenetic species G.J.S. 99–17, the dense disposition of ampulliform phialides in ‘pachybasium’ type heads (Bissett 1991a). In T. saturnisporopsis and H. novae-zelandiae the formation of solitary phialides over a considerable distance of the tip of the conidiophores is infrequent, SB-3CT and in G.J.S. 99–17 this character is absent. Conidia of H. novae-zelandiae are typical of most species in the clade in being ellipsoidal and smooth. Conidia of T. saturnisporopsis and G.J.S. 99–17 are ellipsoidal and tuberculate, strongly reminiscent of T. saturnisporum. Trichoderma saturnisporopsis differs from G.J.S. 99–17 in the pachybasium-like heads of phialides produced in the latter. None of the members of this clade are common. Hypocrea novae-zelandiae is endemic to New Zealand, where it has only been found as its teleomorph on wood in primarily Nothofagus forests of the North and South Islands. The deviating strain G.J.S. 99–17 was isolated from soil in Japan (Kyushu).