What Plant Is Bibotongcao? Understanding Its Morphology and Main Uses at a Glance

Bibotongcao is a folk name for a group of plants in the horsetail family Equisetaceae, most often referring to Equisetum ramosissimum, also known in various places as bitoucao, cuocao and other names. It is a perennial herb with upright, hollow stems marked by distinct nodes and longitudinal ridges; the surface feels rough to the touch, and from a distance it looks like little brush pots or mini bamboo stalks stuck into the ground, which is how it got its name.

Bibotongcao is highly adaptable and prefers moist environments. It is commonly found at field edges, beside ditches, near streams and on damp wasteland, and it is distributed across most parts of China. It spreads and reproduces by underground rhizomes and has vigorous vitality; when it grows in patches it is neat and uniform, which helps to some extent in preventing soil erosion, but in farmland it is also often regarded as a weed that is difficult to eradicate.

In terms of applications, Bibotongcao has a fairly wide range of traditional uses. In folk practice, its aboveground parts are often harvested, dried and then used; traditional experience holds that it has effects such as clearing heat and improving eyesight, and it is mostly used in decoctions or for external washing. For specific usage, consult a physician, and do not use it indiscriminately on your own. In addition, because the stems contain silica and are rough in texture, people once used it to polish wooden objects and to shine metal utensils.

It should be noted that Bibotongcao and Bibotongshu are completely different plants. Bibotongshu is a tree fern in the family Cyatheaceae and is a rare protected plant, with a tall stature like a small tree; Bibotongcao, by contrast, is only a low-growing herb. The two are similar only in name and are not related.

Overall, Bibotongcao is a common yet distinctive wild grass. Understanding its morphology and habits not only helps with identification and management in the field, but also allows us to appreciate the traditional wisdom of folk plant use. If you want to dig it up for use, it is advisable to first have a professional identify it, so as to avoid confusing it with plants of similar appearance.