Grovesinia moricola於臺大實驗林溪頭教育中心的野生木本灌木Debregeasia orientalis與台北市士林區的觀賞性木蘭品系植物上皆有被記錄。其中D. orientalis為此真菌於全球首次發現的新宿主屬，而木蘭屬則為於台灣首次紀錄的新宿主屬。本研究透過此真菌於寄主上的無性世代之形態與ITS rDNA序列相似度鑑定此真菌物種。於此二種宿主上，所產生之輪斑病的病徵與無性世代的Hinomyces有關。於木蘭葉上，亦有菌核階段的產生，且即使木蘭葉仍附著於樹木上，其被降解的速度依然很快，這很可能會影響樹木的固碳效率。在台灣，由G. moricola所引起的輪斑病僅發生在相對低溫的環境條件之下，這或許具有做為氣候變遷之生物指標的潛力。

Grovesinia moricola is recorded on the wild woody shrub Debregeasia orientalis (Urticaceae) in the Xitou Education Center of the Experimental Forest of National Taiwan University and on ornamental magnolia cultivars in Shilin District, Taipei City. Debregeasia orientalis represents a new host genus for this fungus worldwide and Magnolia a new host genus for Taiwan. The fungus was identified based on anamorph morphology on the host and ITS rDNA sequence similarity. In both hosts, the Hinomyces anamorph was associated with symptoms of zonate leaf spot. On the magnolia leaves, the sclerotium stage also developed. The degradation of magnolia leaves progressed very quickly even when they were still attached to the trees, and may affect the carbon fixation efficacy of the tree. In Taiwan, zonate leaf spot disease caused by G. moricola only occurs under relatively low-temperature conditions and may have the potential to serve as a bioindicator of climate change.