Near Calera creek there is aquatic vegetation including rushes, bulrushes, horsetail, fat hen, and plantain. The extant horsetails represent a tiny fraction of horsetail diversity in the past. These include herbs that may be betony, Solomon's seal, clematis, horsetail, daffodil and many others. This flowering plant is sometimes mistakenly identified as the non-flowering horsetail. These rocks often contain plant fossils, the commonest being the horsetail, "Phyllotheca". It contains a single species, Rhoiptelea chiliantha, commonly known as the horsetail tree. The remaining part of the banana stalk becomes a horsetail. The bow's horsetail hair is inseparably interlaced with the strings. For the plant horsetail see Equisetum. The highest horsetail type is Silver Cord Cascade at . The horsetail whiskers are symbols of authority and stateliness. Among the many waterfalls within the wilderness is Horsetail Falls. The falls initially descend over a small number of cascades before the horsetail drop. The tallest waterfall is "Horsetail" ("Cola del Caballo"), more than fifty meters high. In Spanish-speaking countries, these plants are known as , meaning "horsetail".