PARSLEY FAMILY. 



Fruit elongated, its ribs upwardly bristly; flowers white in compound 



umbels 6. Osmorrhiza. 



Oil-tubes conspicuous; flowers white; annuals or biennials. 

 Ribs armed with barbed or hooked bristles. 

 Fruit somewhat flattened dorsally; calyx-teeth obsolete; umbels 



compound 7. Daucus. 



Fruit flattened laterally; calyx-teeth obvious; umbels simple or nearly 



simple 8. Caucalis. 



Ribs inconspicuous; fruit papillate-roughened; umbels irregularly com- 

 pound; di- or tri-chotomous branching annual . . 9. Apiastrum. 

 B. Fruit not prickly, nor tuberculate, nor scaly (sometimes hairy). 

 Leaves opposite: fruit ovate, turgid ; ribs none; slender annuals 



1, BOWLESIA. 



Leaves alternate or in a radical tuft; perennials or biennials. 

 Leaves simple; stems creeping; umbels simple or proliferous. 



Leaves orbicular or peltate; oil-tubes none 2. Hydrocotyle. 



Leaves consisting of hollow cylindrical petioles ; oil-tubes solitary. . . . 



18. Crantzia. 



Leaves pinnately or ternately compound, or decompound; umbels 

 compound. 



Fruit not flattened dorsally, sometimes somewhat laterally flattened; 

 ribs not winged. 

 Flowers white. 

 Oil-tubes none. 



Fruit linear or elongated, % to 1 in. long . ... 6. Osmorrhiza. 



Fruit ovate, 1V£ lines long 10. Conium. 



Oil-tubes solitary in the intervals. 

 Umbels subsessile in the forks and terminal on the branches; fruit 



less than 1 line long 12. Apivm. 



Umbels terminal on the branches. 

 Leaves pinnate or bipinnate. 

 Leaflets serrate; plants of marshes or stream banks. 

 Ribs corkv, but distinct. 



Styles short 13. ClCUTA. 



Styles elongated 19. CEnanthe. 



Ribs confluent, forming a continuous corkv covering 



20. Berula. 



Leaflets entire; ribs filiform; plants of dry ground 



15. Carvm. 



Leaves triternately dissected; fruit less than I line long 



14. Ammi. 



Oil-tubes 2 or more, at least in some of the intervals. 



Leaves simply pinnate; bracts and bractlets present 



17. SlUM. 



Leaves 2 or 3 times ternate ; bracts and bractlets mostly none. . . . 



16. PlMPINELLA. 



Flowers yellow. 



Rather low plants; leaves mostly radical; leaflets broad 



11. VELjEA. 



Tall leafy plants; leaves dissected into filiform segments 



21. Fcenictjlum. 



Fruit flattened dorsally; the lateral ribs winged. 

 Oil-tubes as long as the fruit. 

 Dorsal and intermediate ribs winged or very prominent; flowers 

 white; tall and leafy plants. 

 Leaves ternate, then pinnate; oil- tubes 1 to 3 in the intervals. . . . 



23. Angelica. 



Leaves pinnate; oil-tubes solitary in the intervals 



22. Selinum. 



Dorsal and intermediate ribs filiform. 

 Acaulescent or short caulescent. 

 Wings corky-thickened; flowers commonly yellow; tall plants 



with large leaves 24. Leptot.exia. 



Wings thin; flowers yellow, white or purple; low plants 



25. Peucedanvm. 



