The family contains only three genera&colon; "Gelsemium", "Mostuea" and "Pteleocarpa". "Gelsemium elegans" or heartbreak grass. "Gelsemium" has been shown to contain methoxyindoles. Some 19th century sources identified "Gelsemium sempervirens" as a folk remedy for various medical conditions. Gelsemium is an Asian and North American genus of flowering plants belonging to family Gelsemiaceae. "Gelsemium" is the subsequent "Nanfang caomu zhuang" entry (26, tr.