Le aoga o la'au su'ega
Fa'aleleia le puipuiga. O laau faanatura o loʻo i ai le tele o mea faʻamaʻi, e pei o suauu taua, polysaccharides, glycosides, alkaloids, acids organic, suauu, waxes, tannins, resins, pigments laau, elemene minerale, ma isi.
va'ai fa'amatalaga