Stylatula, Verrill, 1864

Williams, Gary C. & Matsumoto, Asako K., 2015, A Review of the Pennatulacean Genus Stylatula, with the Description of a New Species from Japan (Cnidaria: Octocorallia), Proceedings of the California Academy of Sciences 62 (8), pp. 257-266 : 265

Key to the Pacific Ocean Species of Stylatula

1a. Sclerites of the polyp leaf fans are not three-flanged. Polyps per polyp leaf 4–6........................................................................ S. austropacifica

1b. Sclerites of the polyp leaf fans are conspicuously three-flanged....................... 2

2a. Mature colonies <65 mm in length. Polyps per polyp leaf 2–4. Large needle-like sclerites of the polyp leaf fans less than 7........................................ S. diminutiva

2b. Mature colonies> 65 mm in length. Polyps per polyp leaf more than 5. Large needle-like sclerites of the polyp leaf fans 9–12............................................... 3

3a. Number of polyps per polyp leaf up to 18................................. S. gracilis

3b. Number of polyps per polyp leaf up to 24................................ S. elongata