This study records a severe outbreak of a disease on Zizyphus mucronata (Rhamnaceae) in Greater Kruger National Park, South Africa. The causal agent of the disease was found to be Coniodictyum chevalieri, a fungus previously believed to be very rare. Detailed illustrations of the symptoms and fungus are presented in order to facilitate future studies. The known geographical distribution of Coniodictyum is presented in relation to the distribution of its host, and a short review of its systematic history is also given. This also treats an invalidly published species name in South Africa, which has confused the literature. A DNA-based phylogeny is presented for the pathogen and this reflects the unique nature of its geographical distribution and biology.

中文翻译：

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由 Coniodictyum chevalieri 引起的克鲁格国家公园 Zizyphus mucronata 疾病流行。

这项研究记录了南非大克鲁格国家公园的 Zizyphus mucronata（鼠李科）疾病的严重爆发。该疾病的病原体被发现是 Coniodictyum chevalieri，一种以前认为非常罕见的真菌。提供了症状和真菌的详细说明，以促进未来的研究。介绍了 Coniodictyum 已知的地理分布与其宿主的分布有关，并对其系统历史进行了简短的回顾。这也处理了在南非无效发表的物种名称，这混淆了文献。为病原体提供了基于 DNA 的系统发育，这反映了其地理分布和生物学的独特性质。