OMBELUFE&AE. 2$T 



blowers white, greenish or pink. 



Fruit, or its beak, bristly, papillose or tuberculide^ 



Leaves digitately 3-7-pairted or lobed. 2, Sanwula. 

 Leaves pinnately or tcrnately decompound ox dissected. 

 Fruit linear, ribbed, long-attenuate at the- base. 



5. Washingtonia. 

 Fruit with 4 strong, bristly wings. 



25. Daucus. 

 Fruit smooth, ribbed or wmged, rarely pubescent. 



Fruit winged, at least on the lateral ribsy dorsally . flat- 

 tened. 

 Leaves simply ternate or pinnate. 22. Qxypolis. 

 Leaves ternately or pinnately compound ; segments 

 broad. 

 Segments ovate or oval, not cordate. 



21. Angelica. 

 Segments large; cordate, pubescent. 



1 24. Heraalewm. 



Fruit winged or wingless, not flattened either dorsally or 



laterally. i 18. A.eth\isd. { 



Fruit laterally flattened. 



Fruit linear or linear-oblong. 



Leaves 3-foliolate. 11. Deringa. 



Leaves decompound or finely dissected. 



4. Chaerophyllum. 

 Fruit ovoid or oval. , , 



Leaves finely dissected into filiform, segments. 

 Bibs of the fruit equal, prominent. 



17. Ptilimnium. 

 Bibs filiform, inconspicuous. 



12. Carum. 

 Leaves pinnate or decompound; segments linear 

 to ovate-oblong. 

 Oil-tubes of the fruit none. 



Leaves biternate with broad segments. 



15. AeffopOfAvam. 

 Leaves decompound into small, piqn,a,ti- 



fid segments. 7. Cojjiiwn, 



Oil-tubes solitary between the ribs;, leaves 



pinnate. ,,, 10. Cieuta. 



Oil-tubes numerous. 



Tall, native marsh perennials. 



16. Sium. 

 Introduced plant of dry ground. 



14. Pimpinclla. 

 Flowers yellow or purple. 



Fruit ' dorsally flattened. 23. Pastinaoa. 



Fruit not flattened; ribs, or some of them, wuaged. 



20. Thdspiwm. 

 Fruit laterally flattened; leaves decompound (eicept Zizia)-. 

 Leaf-segments oval or ovate, entire. 13. Taenidia. 

 Leaf -segments crenate, lobed or incised. 



Leaf-segments broad, crenate or dentate. 



9. Zizia. 

 Leaf -segments filiform; fruit prominently ribbed. - 



19. Foenicvlvm., 



1. HYDBOCOTYLE L. Water Pennywort. 



Leaves nearly orbicular, peltate. 



Umbels simple, rarely proliferous; pedicels slender. 



1. H. umbeUata. 



