608 



= Leaves decompound ; oil-tubes solitary or none ; perennials. 



11. Aegopodium. Ribs equal, filiform. Oil-tubes none ; stylopodiuin conical. Leaves biternate. 



12. Cicuta. Kilts flattish, corky, the lateral largest. Marsh plants. 



13. Carum. Kibs filiform, inconspicuous; stylopodiuin short-conical. Leaf-segments filiform. 



Petals wiiite or roseate. 



14. Petroselinum. Kibs filiform, inconspicuous ; stylopodiuin short-conical. Leaf-segments 



incised. Petals greenish-yellow. 



= = Leaves once pinnate ; oil-tubes 6-many ; stylopodium depressed ; aquatic perennials. 



15. Berula. Fruit nearly globose ; ribs inconspicuous ; pericarp thick and corky. 



16. Slum. Fruit ovate to oblong ; ribs prominent, corky, nearly equal. 



= == Leaves 3-foliolate ; stylopodium conical ; oil-tubes solitary, beneath and between the ribs. 



17. Cryptotaenia. Ribs obtuse, equal ; fruit linear-oblong, glabrous. 



t- -i- +- Carpels terete or slightly flattened laterally ; petals golden yellow. 



18. Zizia. Fruit ovate to oblong ; ribs filiform ; etylopodium none ; seed terete. 



*-*-*-+- Carpels depressed dorsally ; fruit short. 

 H- Seed-face flat or nearly so ; petals mostly yellow. 



19. Foeniculum. Ribs prominent ; oil-tubes solitary. Leaves filiform-dissected. 



20. Pimpinella. Ribs filiform; oil-tubes numerous; stylopodium depressed-conical. Leaves 



pinnate. Petals white. 



21. Taenidia. Ribs filiform; oil-tubes numerous; stylopodium none. Leaves palmately com- 



pound. Petals yellow. 



H- ++ Seed-face decidedly concave ; petals white (except in Bupleurwm). 



= Leaves compound. 

 a. Fruit beakless ; oil-tubes numerous. 



22. Eulophus. Stylopodium conical. Glabrous perennials from fascicled tubers. Leaves pin- 



nately compound. 



6. Fruit (in ours) conspicuously beaked ; oil-tubes solitary in the intervals or none ; leaves 2-8 

 ternately or -pinnately divided. 



23. Anthriscus. Beak not more than one third to one half as long as the body of the fruit, smooth. 



24. Scandiz. Beak much exceeding the body of the fruit, its margins upwardly hispid. 



= = Leaves entire. 



25. Bupleurum. Fruit oblong, with slender ribs, no oil-tubes, and prominent flat stylopodium. 



Leaves simple, perfoliate. 



* * * Fruit not flattened either way or but slightly, neither prickly nor scaly, 

 i- Dorsal ribs filiform, the lateral very thick and corky ; oil-tubes solitary. 



26. Lilaeopsis. Small glabrous creeping perennials, rooting in the mud, with small simple 



umbels and leaves reduced to hollow cylindrical jointed petioles. 

 2T. Cynosciadium. Annuals with compound leaves and compound umbels. 



+- + Ribs all prominent and equal but not winged ; flowers white or roseate. 

 ++ Ribs acutish or rounded, narrower than the intervals between them. 



28. Ligusticum. Stoutish perennials. Leaves 2-4-ternate ; leaflets ovate, obovate, or oblong. 



29. Coriandrum Slender annuals. Cauline leaves cleft or dissected into linear segments. 



M- ** Ribs thick ish and corky, broader than the intervals. 



80. Aethusa Slender annual with finely divided leaves. Oil-tubes solitary in the intervals, 2 on 

 the commissure. 



31. Coelopleurum. Stout maritime perennial. Oil-tubes under the ribs as well as in the inter- 



vals, 2-4 on the commissure. 



-t- -i- -t- Ribs all conspicuously winged ; stylopodium depressed or wanting ; perennials. 



32. Cymopterus. Low and glabrous, mostly cespitose, with pinnately compound leaves and 



white flowers. Oil-tubes 1-several. Western. 



83. Thaspium Tall, with ternately divided or simple leaves, and yellow flowers (rarely purple). 

 Oil-tubes solitary in the intervals, 2 on the commissure. 



