We studied the alkaloids in the leaves of three Berberis species (B. oblonga, B. intergerrima, B. nummularia) and Ammopipanthus mongolicus. For the three Berberis species: B. oblonga (collected in Tashkent oblast in May 1975, flowering phase) had 0.04% total bases; extraction with chloroform and methanol, separation on silica gel yielded thalicmidine, isocorydine, and a small amount of berberine, with qualitative differences from root alkaloids. B. intergerrima (collected in Kirghizia in July 1974, fruit-bearing phase) had 0.18% total alkaloids; four bases were isolated from the nonphenolic fraction, identified as isocorydine, thalicmidine, glaucine, and hydroxyacanthine, plus berberine; main alkaloids were thalicmidine and glaucine. B. nummularia (collected in Chimgan in May 1975, flowering phase) had 0.052% total alkaloids, yielding thalicmidine and isocorydine. The main alkaloids in the three species were aporphine type; thalicmidine and isocorydine were first isolated from Berberis genus. For Ammopipanthus mongolicus (collected in September 1974 in Ala-Shan Gobi, Mongolia), chloroform extraction gave 2.5% of base mixture; repeated separation by basicity, silica gel column chromatography, and salt preparation yielded nine individual alkaloids. About half the total was sparteine (I, isolated as perchlorate with mp 171-172°C, [α]D -12.5°); 10% was d-lupanine (II, isolated as hydriodide with mp 189-190°C, [α]D +44°); base III (mp 105-110°C, [α]D -67°) was identified as α-isosparteine; bases IV-VI were in very small amounts.