Taxonomy and phylogeny of the Leptographium olivaceum complex (Ophiostomatales, Ascomycota), including descriptions of six new species from China and Europe Author Yin, Mingliang Author Wingfield, Michael J. Author Zhou, Xudong Author Linnakoski, Riikka Author Beer, Z. Wilhelm de text MycoKeys 2019 60 93 123 http://dx.doi.org/10.3897/mycokeys.60.39069 journal article http://dx.doi.org/10.3897/mycokeys.60.39069 1314-4049-60-93 7E7DFCA0FC455155AE9E1A3250242507 Leptographium olivaceapini (R.W. Davidson) M.L. Yin, Z.W. de Beer & M.J. Wingf. comb. nov. ≡ Ceratocystis olivaceapini R.W. Davidson, Mycologia 63: 7 (1971). (Basionym) ≡ Ophiostoma olivaceapini (R.W. Davidson) K.A. Seifert & G. Okada, In Okada et al., Can. J. Bot. 76: 1504 (1998). ≡ Grosmannia olivaceapini (R.W. Davidson) Z.W. de Beer, R. Linnakoski & M.J. Wingf., In Linnakoski et al., Antonie van Leeuwenhoek 102: 375-399 (2012). Type. USA, New Mexico, Santa Fe, from Pinus ponderosa tree infested Dendroctonus sp. and other bark beetles, 10 July 1964, R.W. Davidson , ( holotype BPI 595910 = RWD 548D; BPI 595914 = RWD 548D isotype); USA, Arizona, Flagstaff, from Pinus ponderosa infested with Dendroctonus sp., 24 July 1964, R.W. Davidson , (BPI 596223= RWD 581-D isotype); Arizona, Flagstaff, from P. ponderosa infested with Dendroctonus sp., 3 Oct 1986, T. Hinds , ( epitype PREM 61051, designated here, ex-epitype cultures CBS 504.86 = CMW 116 = COLO 479, MBT 379458 ). Descriptions. Davidson (1971 , pp 7-10, figs 2, 12, 18); Upadhyay (1981 , p. 54, figs 122-129); Mouton et al. (1993 , pp 372-373, figs 1-4). Host trees. Pinus ponderosa . Insect vectors. Dendroctonus sp. Distribution. USA. Notes. No living culture associated with the holotype (BPI 595910) or isotype (BPI 595914) of L. olivaceapini exists. However, T. Hinds, a collaborator of R.W. Davidson and later curator of the RWD culture collection, provided an isolate (COLO 479) labeled as C. olivaceapini to M.J. Wingfield, who later deposited this in the CBS (CBS 504.86). The species name and origin provided by Hinds with the isolate corresponds to a second specimen mentioned by Davidson (1971 , p. 10) in the protologue (RWD 581-D = BPI 596223). In our opinion, the isolate (COLO 479) most probably originated from the specimen (RWD 581-D). We could not confirm with certainty that BPI 296223 originated from RWD 581-D and thus designated a dried culture of COLO 479 as the epitype for L. olivaceapini . Additional Material examined : USA, Arizona, Flagstaff, from P. ponderosa infested with Dendroctonus sp., 3 Oct 1986, T. Hinds , (PREM 61051, cultures CBS 504.86 = CMW 116 = COLO 479). Minnesota, Pinus resinosa , Nov 1986, M.J. Wingfield, (cultures: CBS 503.86 = CMW 63).