Number: NIH number; PQ number Name: Species Plant Part: b - bark r - root sd - seed fr - fruit bu - bulb s - stem l - leaf pl - plant wo - wood Family: Botanical classification Source: As supplied by P.I. note. Alkaloid: (a) result with Mayer's reagent (b) result with silicotungstic acid (c) quantitative determination w - wet, as received d - dried Glycoside: +++ Very active (fresh extract) ++ Moderately active (fresh extract) + Active (conc. extract) + Weakly active (conc. extract)