The genus Allantonectria is synonymised with Thyronectria, based on morphological and molecular phylogenetic considerations. Investigations of types and fresh collections revealed that Tubercularia concentrica is an earlier name for Sphaeria (syn. Allantonectria) miltina and is thus combined in Thyronectria. Allantonectria yuccae is recognised as a distinct species and transferred to Thyronectria, as well as the recently described A. zangii. Descriptions and illustrations are provided for T. concentrica and T. yuccae. A recent collection of the North American Thyronectroidea chrysogramma, the generic type of Thyronectroidea, was studied with respect to morphology of its sexual morph in fresh condition and of its asexual morph produced in pure culture. Molecular phylogenies based on six loci (ITS and LSU regions of nuc rDNA, act1, rpb1, rpb2, tef1 and tub2 genes) place T. chrysogramma within Thyronectria, confirming synonymy of Thyronectroidea with Thyronectria, but remarkably a relationship to European species with green to brown spores (former genus Mattirolia) receives no support, and its closest relatives remain unclear. Thyronectria caraganae is described as a new species from herbarium specimens of Caragana arborescens collected in the Ukraine. It is characterised by morphology of the sexual morph and by DNA sequence data, which place it within the T. austroamericana - T. rhodochlora clade with high support. This is also supported by its morphology, specifically ascomata partly embedded within a stroma, muriform ascospores not budding within the ascus, becoming yellowish to rosy at maturity.

中文翻译：

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重新评估 Allantonectria、Thyronectroidea 和 Thyronectria caraganae sp. 的系统发育位置。十一月

基于形态学和分子系统发育考虑，Allantonectria属与Thyronectria同义。对类型和新鲜采集的调查表明，Tubercularia concentrica是 Sphaeria (syn. Allantonectria ) miltina 的早期名称，因此与Thyronectria结合在一起。Allantonectria yuccae被认为是一个独特的物种，并被转移到Thyronectria以及最近描述的A. zangii中。为T. concentrica和T. yuccae提供了描述和插图. 最近收集的北美甲状胼胝亚属（ Thyronectroidea的通用类型）在新鲜条件下的有性变体形态和纯培养中产生的无性变体形态方面进行了研究。基于六个基因座（nuc rDNA、act1、rpb1、rpb2、tef1和tub2基因的 ITS 和 LSU 区域）的分子系统发育将T. chrysogramma置于Thyronectria内，证实了Thyronectroidea与Thyronectria的同义词，但与具有绿色至绿色的欧洲物种的关系显着棕色孢子（前属Mattirolia ) 没有得到任何支持，其最亲近的亲属仍不清楚。Thyronectria caraganae被描述为来自于乌克兰采集的Caragana arborescens标本的新物种。它的特点是有性变体的形态和 DNA 序列数据，将其置于T. austroamericana - T. rhodochlora进化枝内，具有高支持度。这也得到了它的形态学的支持，特别是部分嵌入基质内的子囊，胞状子囊孢子不在子囊内出芽，成熟时变成淡黄色到玫瑰色。