From the stem bark of Teclea ouabanguiensis Aubrev. & Perr. (Rutaceae), six furoquinoline alkaloids have been isolated and characterized. Previously known alkaloids, but new to this plant, were tecleaverdoomine (1), tecleine (3), flindersiamine (4), montrifoline (nkolbisine) (5) and kokusaginine (6), while tecleamine 2 is reported from a natural source for the first time. Spectroscopic and chemictal evidence is presented for the structure of the new isolate 2. © 1982, American Chemical Society. All rights reserved.