Four new species of Acalypha (Euphorbiaceae, Acalyphoideae) from the Western Indian Ocean Region, based on morphological and molecular evidence, are described, illustrated, and mapped. Acalypha gillespieae sp. nov., A. leandrii sp. nov. and A. nusbaumeri sp. nov. are endemic to Madagascar, and A. mayottensis sp. nov. is known only from Mbouzi islet (Mayotte), in the Comoros Archipelago. We also describe for the first time in Acalypha the presence of membranous or chartaceous perules covering the axillary buds. Preliminary conservation assessments of the new species are also provided.

中文翻译：

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来自西印度洋地区的四个新种 Acalypha L.（大戟科，Acalyphoideae）。

根据形态学和分子证据，描述、说明和绘制了来自西印度洋地区的四种新的 Acalypha（大戟科、Acalyphoideae）物种。Acalypha gillespieae sp. 十一月，A.leandrii sp。十一月 和 A. nusbaumeri sp。十一月 是马达加斯加和 A. mayottensis sp. 的特有种。十一月 仅在科摩罗群岛的姆布齐岛（马约特岛）已知。我们还第一次在 Acalypha 中描述了覆盖腋芽的膜质或图质细珠的存在。还提供了对新物种的初步保护评估。