Eight new Arthrinium species from China Author Wang, Mei Author Tan, Xiao-Ming Author Liu, Fang Author Cai, Lei text MycoKeys 2018 34 1 24 http://dx.doi.org/10.3897/mycokeys.34.24221 journal article http://dx.doi.org/10.3897/mycokeys.34.24221 1314-4049-34-1 Arthrinium camelliae-sinensis M. Wang, F. Liu & L. Cai sp. nov. Figure 4 Type . CHINA, Jiangxi Province, on Camellia sinensis , 22 Apr. 2013, Q. Chen, (holotype: HMAS 247186; culture ex-type: CGMCC 3.18333 = LC5007). Etymology. Named with the host plant of the type. Description. Hyphae hyaline, branched, septate, 2.0-4.5 μm diam. Conidiophores reduced to conidiogenous cells. Conidiogenous cells erect, aggregated in clusters, hyaline to pale brown, smooth, doliiform to ampulliform, 4.0-9.5 x 3.0-6.0 μm (x̄ = 6.1 +/- 1.4 x 4.4 +/- 0.9, n = 30). Conidia brown to dark brown, smooth, globose to subglobose, 9.0-13.5 x 7.0-12.0 μm (x̄ = 11.1 +/- 0.9 x 10.1 +/- 1.0, n = 50). Culture characteristics. On PDA, colonies flat, margin circular, initially white, becoming greyish on surface, reaching 9 cm in 7 days at 25 °C. On MEA, with sparse aerial mycelia, surface dirty white, reverse pale luteous. Other specimens. CHINA, Hubei Province, on Brassica campestris , 31 Mar. 2016, Y.Z. Zhao, living culture LC8181 = LF1498. Notes. Two strains representing A. camelliae-sinensis clustered in a well-supported clade and appeared closely related to A. jiangxiense (97% sequence similarity in ITS; 94% in TUB2; 94% in TEF1) and A. obovatum (98% sequence similarity in ITS; 95% in TUB2; 93% in TEF1). While A. camelliae-sinensis is distinct from A. jiangxiense in its larger conidia (globose or subglobose, 9.0-13.5 x 7.0-12.0 μm in A . camelliae-sinensis vs. surface view 7.5-10.0 μm diam, side view 4.5-7.0 μm diam in A. jiangxiense ) and conidiogenous cell arrangement (aggregated irregularly on hyphae vs. scattered on hyphae in A. jiangxiense ) and distinct from A. obovatum in the lack of obovoid conidia (see the note under A. obovatum ). Figure 4. Arthrinium camelliae-sinensis (from ex-holotype strain CGMCC 3.18333) A-B 7 d old cultures on PDAC Colony on MEA with bamboo leaves producing conidia masses D-F Conidiogenous cells giving rise to conidia G Conidia. Scale bars = 10 μm .