International Mycological Institute, Bakeham Lane, Egham, Surrey, England TW20 9TY.
Mycologia. 2004 May-Jun;96(3):572-97.
Neonectria (Hypocreales: Nectriaceae) species having Cylindrocarpon anamorphs that lack microconidia and chlamydospores include: Neo. discophora var. discophora, Neo. discophora var. rubi, stat nov. et comb. nov., Neo. lucida, comb. nov., Neo. viridispora, sp. nov. and Neo. westlandica, comb. nov. Perithecia of these species are red and perithecial anatomyis of the N. mammoidea type, with a palisade of hypha-like cells in the outer perithecial wall. These species occur on recently dead or dying trees. Perithecia of Neo. betulae, sp. nov and Neo. dumontii, sp. nov. are anatomically and biologically similar to those of Neo. discophora. The only known culture of Neo. betulae remained sterile, while Neo. dumontii has not been cultured; their anamorphs are presumed to be Cylindrocarpon. Analyses of mit ssu rDNA sequences indicate that Neonectria/Cylindrocarpon is monophyletic. Within the genus, species having N. mammoidea type perithecia are paraphyletic. Most species cluster with Neo. discophora, but Neo. westlandica and Neo. trachosa are basal to a clade that includes species that do not have a N. mammoidea-type perithecium. Nectria fuckeliana clusters independently of Neonectria and Nectria. Although reported to have a Cylindrocarpon anamorph, fresh ascospore isolates of N. fuckeliana did not produce Cylindrocarpon macroconidia but produced acremonium- or verticillium-like anamorphs. A key to nectriaceous species of Neonectria that have Cylindrocarpon anamorphs that lack microconidia and chlamydospores and/or that have a N. mammoidea type perithecial wall anatomy is presented. New combinations are proposed for other species formerly included in Nectria that have non-microconidial Cylindrocarpon anamorphs: Neonectria cinnamomea, Neo. jungneri, Neo. platycephala, Neo. phaeodisca and Neo. verrucospora.
无梗囊壳霉（Hypocreales：Nectriaceae）物种具有缺乏分生孢子和厚垣孢子的柱孢属无性型，包括：Neo. discophora var. discophora、Neo. discophora var. rubi，新组合和新种，Neo. lucida，新组合，Neo. viridispora，新种和 Neo. westlandica，新组合。这些物种的子囊壳为红色，子囊壳解剖学为 N. mammoidea 型，在外子囊壳壁中有一层菌丝状细胞的栅栏。这些物种发生在最近死亡或垂死的树上。Neo. betulae，新种和 Neo. dumontii，新种的子囊壳在解剖学和生物学上与 Neo. discophora 相似。Neo. betulae 的唯一已知培养物仍然无菌，而 Neo. dumontii 尚未培养；它们的无性型被推测为柱孢属。线粒体 ssu rDNA 序列分析表明，Neonectria/Cylindrocarpon 是单系的。在属内，具有 N. mammoidea 型子囊壳的物种是并系的。在该属中，具有 N. mammoidea 型子囊壳的物种是并系的。大多数物种与 Neo. discophora 聚类，但 Neo. westlandica 和 Neo. trachosa 位于一个不具有 N. mammoidea 型子囊壳的种组成的分支的基部。Nectria fuckeliana 与 Neonectria 和 Nectria 独立聚类。尽管报道有柱孢属无性型，但 N. fuckeliana 的新鲜游动孢子分离物不产生柱孢属分生孢子，但产生类似于 acremonium 或 verticillium 的无性型。提出了一种具有缺乏分生孢子和厚垣孢子和/或具有 N. mammoidea 型子囊壳壁解剖结构的柱孢属无性型的 Neonectria 种的 Nectria 属种的关键。对于以前归入 Nectria 的具有非分生孢子的柱孢属无性型的其他物种提出了新的组合：Neonectria cinnamomea、Neo. jungneri、Neo. platycephala、Neo. phaeodisca 和 Neo. verrucospora。
