A new species, Plagiostachys lourdesiae, from Mindanao, Philippines is described here. Plagiostachys escritorii, which also occurs in Mindanao, is the most closely related species. The new species differs from P. escritorii in its petiolate lamina, lax inflorescence, red and strongly curved upward labellum, and globose to subglobose maroon fruit. A colour plate, notes on its distribution, habitat, phenology, conservation status as well as a key to Plagiostachys species in the Philippines are provided.

中文翻译：

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Plagiostachys lourdesiae（姜科），一种来自菲律宾棉兰老岛的新种

此处描述了一种来自菲律宾棉兰老岛的新物种Plagiostachys lourdesiae。棉兰（Plagiostachys escritorii），也发生在棉兰老岛（Mindanao），是关系最密切的物种。新种不同于P. escritorii，有叶柄叶片，花序疏松，红色和强烈弯曲的向上唇，以及球状到近球状栗色果实。提供了一个彩色标牌，说明了其分布，栖息地，物候，保护状况以及菲律宾斜柏树种的关键。