Spp. Plantago ovata
Fam. Plantaginaceae
Sweet and neutral in energy.  Mucilage and a lubricating laxative.  
Psyllium husk is said to act as a fiber supplement, and therefore should be taken with a lot of water to hydrate it. It has been used to soothe the digestive tract, lower appetite, help lower cholesterol, and has a laxative effect.
Kosher and USDA organic