Aromatic Herbs that Transform Dampness

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Besides transforming dampness, what is another important function of Huo Xiang (pogostemonis herba)?
Huo Xiang transforms dampness, releases the exterior, and harmonizes the middle. This makes it useful for external attacks with stomach symptoms, as in the formula Huo Xiang Zheng Qi San

Source: Bensky, D. (2004). Chinese Herbal Medicine: Materia Medica. Seattle, WA: Eastland Press. pp. 474 [Q858]