Aconitum, Delphinium, and Consolida species (Ranunculaceae) are toxic plants due to the diterpenoid alkaloids they contain. These alkaloids are neurotoxic agents, causing bradycardia, muscle system spasms, hypotension, and death by arrest of respiration. Aconitum preparations have been used as cardiotonics, febrifuges, sedatives, and anodynes. Delphinium and Consolida were formerly known as Delphinium, and their extracts have been employed in analgesic balms and also as sedatives, emetics, and anthelmintics. They are also known to possess insecticidal and growth-inhibiting activities [1, 2]. In continuation of our investigations on Turkish Aconitum, Delphinium, and Consolida species for their diterpenoid alkaloid content [3–6], we have now studied Consolida anthoroidea and Delphinium linearilobum. From the aerial parts of Consolida anthoroidea six diterpenoid alkaloids, ajaconine (1), hetisine (2), 13-O-acetylhetisine (3), α-atisine (4), spiratine A (5), and septentriosine (6), and two norditerpenoid alkaloids, 1-demethylwinkleridine (7), and senbusine B (8), have been isolated and identified. This plant has not been chemically studied before. From the aerial parts of Delphinium linearilobum two diterpenoid alkaloids, hetisine (2) and acochlearine (9), and five norditerpenoid alkaloids, isotalatizidine (10), cammaconine (11), winkleridine (12), deltatsine (13), and condelphine (14), have been isolated and identified. From the aerial parts of Delphinium linearilobum (Syn. D. crispulum) collected from a different region of Turkey and from the roots of the plant some diterpenoid alkaloids have been isolated earlier [7, 8]. In this study we report the occurence of winkleridine, condelphine, and acochlearine for the first time in this plant. Among the alkaloids isolated from both plants, especially spiratine A (5) [9] and acochlearine (9) [3] are very rare compounds; these two alkaloids have been isolated only once before from other plants. This is also the first report for the occurrence of spiratine A in Ranunculaceae. 13C NMR data of these two compounds are shown in Table 1.