... a perennial with a thick rhizome, rhizome ramifies, faint yellow radicle, brown to dark brown original rhizome, often have ... abscission cork, stiff and faint yellow section, upright stem, green & white in color, oblong trilobed leaves, no ... stalk, umbrella inflorescence, with dense terminal, yellow or yellowish green flowers, 6 to 7 month blooming period. In application ...