犬问荆
犬问荆（学名：Equisetum palustre）为木贼科木贼属下的一个种。
Equisetum palustre
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Equisetum palustre 犬问荆
![](/Images/godic/202501/11/Equisetum_palustre_detail1128.jpeg")
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![Détail d'un verticille de rameaux, et de la gaine dentée correspondant aux feuilles](/Images/godic/202501/11/Equisetum_palustre41128.JPG")
![Sumpf-Schachtelhalm (Equisetum palustre)](/Images/godic/202501/11/Equisetum_palustre_kz11128.jpg")
Equisetum palustre, the marsh horsetail or the humpback, is a plant species belonging to the division of horsetails (Equisetopsida). It is widespread in cooler regions of North America and Eurasia.