Lupinas palmeri, S. Wats, contains three alkaloids : lupinine, C10H19ON, previously found in L. luieus and in Anabasis aphylla; tetralupine, a new alkaloid isomeric with lupinine and not identical with isolupinine; and pentalupine, provisionally given the formula C16H30ON2, also a new alkaloid. Sparteine does not occur in this plant. © 1934, American Chemical Society. All rights reserved.