19. Anthriscus. Fruit linear, long-beaked, without ribs or oil-tubes, and with conical stylopodium. Leaves ternately decompound.
20. Bupleurum. Fruit oblong, with slender ribs, no oil-tubes, and prominent flat stylopodium. Leaves simple, perfoliate.
[+][+] Carpels terete or slightly flattened laterally; flowers white (except n. 24).
[++] Seed-face flat (or somewhat concave in n. 28); fruit short.
[=] Leaves 3-foliolate; stylopodium conical; oil-tubes solitary.
21. Cryptotænia. Ribs obtuse, equal; fruit linear-oblong.
[=][=] Leaves once pinnate; stylopodium depressed; oil-tubes numerous. Aquatic perennials.
22. Sium. Fruit ovate to oblong; ribs prominent, corky, nearly equal.
23. Berula. Fruit nearly globose; ribs inconspicuous; pericarp thick and corky.
[=][=][=] Leaves decompound. Oil-tubes solitary (none in n. 27). Perennials.