A new tropane alkaloid, 7β-hydroxyhyoscyamine was isolated, together with 6β-hydroxyhyoscyamine, hyoscyamine, norhyoscyamine, scopolamine and tropine, from the leaves of Duboisia hybrid M-II-8-6 (crossbred between D. myoporoides and D. leichhardtii) and the hairy roots of Hyoscyamus albus. © 1989.