The key pharmacologic constituents of shatavari are steroidal saponins, mucilage, and alkaloids. Evening primrose leaves contain flavonoids, mucilage, tannins, sugar, resin and phytosterols. The mucilage obtained from psyllium comes from the seed coat. Psyllium is produced mainly for its mucilage content. Another plant-derived mucilage is made from sodium alginate. Numerous hairy seeds are encapsulated in a slimy mucilage. The flypaper trap utilizes sticky mucilage or glue. These included the presence of malvoid teeth, stems with mucilage canals, and stratified wedge-shaped phloem. The term "mucilage" describes a group of clear, colorless, gelling agents derived from plants. Hairs are simple, usually producing mucilage (slime). The insect will begin to struggle, triggering more glands and encasing itself in mucilage. Being full of viscid glue like mucilage, the pulp is somewhat translucent. After pulping the mucilage around the bean is removed by use of water. Plants produce a similar substance called mucilage that is also produced by some microorganisms. The parenchymatous thalli are generally covered with a mucilage layer, rather than cuticle.