Psyllium is a seed used for medicinal purposes taken from the common fleawort, Plantago psyllium. There are about 250 species of the genus Plantago found worldwide; they belong to the Plantaginaceae family. The most common species producing seed for medicinal use, in addition to P. psyllium, are P. afra, P. isphagula, P. ovata, and P. indica.Psyllium is extensively cultivated in many parts of the world. Shrubby perennial plants with narrow green leaves put up spikes of small flowers that mature into seedpods. The seeds and husks are harvested and used in healing. The seeds are small (1.5–2 cm) and brown or reddish-brown.
Psyllium has been used in Ayurvedic medicine in India and in traditional Chinese medicine for thousands of years. It has also been used in Europe for many years, but it has become common in North American healing only near the end of the twentieth century.
Psyllium facts, information, pictures | Encyclopedia.com .., http://www.encyclopedia.com/sports-and-everyday-life/food-and-drink/food-and-coo (accessed January 23, 2017).