Seven soil-inhabiting new species of the genus Trichoderma in the Viride clade Author Chen, Kai State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China & University of Chinese Academy of Sciences, Beijing 100049, China Author Zhuang, Wen-Ying State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China & University of Chinese Academy of Sciences, Beijing 100049, China text Phytotaxa 2017 2017-07-04 312 1 28 46 http://dx.doi.org/10.11646/phytotaxa.312.1.2 journal article 10.11646/phytotaxa.312.1.2 1179-3163 13701723 Trichoderma adaptatum K. Chen & W.Y. Zhuang , sp. nov. Fig 2 Fungal Names: FN570314. Etymology : The specific epithet refers to adaption of diverse living conditions. Diagnosis . Colony fast-growing on CMD and PDA, slow-growing on SNA at 25 °C. Conidiophores trichoderma-like, phialides narrowly lageniform, conidia green, subglobose to ellipsoid. On CMD after 72 h colony radius 65–66 mm and mycelium covering the plate after 3 d at 25 °C. Colony hyaline, radial, margin well defined, aerial hyphae common, more abundant with distance from the original inoculum. Conidiation noted after 2 d, formed on aerial hyphae and shrubs, shrubs mainly concentrated along the colony margin. Conidiophores symmetrical, trichoderma-like, numerous. Phialides solitary or paired or in whorls of 3–4, typically narrowly lageniform, sometimes ampulliform, (6.9–)9.0–13.8(–21.9) × 2.5–3.5 μm, l/ w 2.3 –5.0(–8.8), 1.7–2.8 μm wide at the base (n = 40). Conidia green, smooth, subglobose to ellipsoid, less commonly globose, 3.1–4.4(–5.3) × 2.8–3.6 μm, l/ w 1.0 –1.5 (n=40). No chlamydospores observed. No distinct odor, no diffusing pigment observed. On PDA after 72 h colony radius 62–65 mm and mycelium covering the plate after 4 d at 25 °C. Colony radial, indistinctly zonate, margin well defined. Aerial hyphae abundant, forming a downy, zonate mat. Conidiation noted after 2 d, formed on aerial hyphae and tufts. No chlamydospores observed. No distinct odor, no diffusing pigment observed. On SNA after 72 h colony radius 13 mm and mycelium covering the plate after 11 d at 25 °C. Colony hyaline, loose, margin well defined, aerial hyphae common. Conidiation noted after 3 d, formed in loose shrubs, first white, turning green after 4 d. No chlamydospores observed. No distinct odor, no diffusing pigment observed. Strains examined : CHINA . Tibet : Linzhi , elev. 3258 m , isolated from soil, 21 November 2014 , K. Chen TC408 ( holotype HMAS 248800 , ex-type culture CGMCC 3.18321 ). ibid. , K. Chen TC403 ( HMAS 248802 ) ; K. Chen TC404 ( HMAS 248803 ). CHINA . Beijing : Yanqing , Yudushan , elev. 926 m , isolated from soil, 8 July 2015 , K. Chen TC734 ( HMAS 248801 ) ; Notes : Trichoderma adaptatum was isolated from Tibet and Beijing , the areas have significantly different climates, which indicates that the fungus might be widely distributed in the county. In Fig 1 , T. adaptatum appeared as a separate terminal branch in the Viride clade, and is not closely related to any other species. Trichoderma tibetense is also from Tibet ( Chen & Zhuang 2016 ), but is distantly related and belongs to the Strictipile clade.