AMMIACEAE 



473 



AMMIACEAE 



Fruit with obscure or obsolete oil tubes. 

 Fruit strongly flattened laterally. 

 Fruit not strongly flattened, sometimes turgid. 

 Fruit bristly, elongated. 



Fruit smooth, of almost distinct globular carpels. 

 Fruit with distinct oil tubes. 



Inflorescence glomerate, the inflorescence aggregated into 



dense heads. 

 Inflorescence manifestly umbellate. 



Fruit flattened dorsally, the lateral ribs of the carpels 

 more or less prominently winged. 

 Oil tubes solitary in the intervals. 

 Stylopodium conic. 



Fruit not notched at the apex. 

 Fruit notched at the apex. 

 Stylopodium obsolete or flat. 

 Flowers white. 



Fruit armed w-ith barbed spines. 

 Fruit spineless. 

 Flowers yellow. 

 Oil tubes more than I in the intervals. 

 Leaf blades 1-2 ternately divided. 

 Leaves much more divided. 

 Fruit more or less flattened laterally or sometimes 

 slightly dorsally flattened. 

 Oil tubes solitary in the intervals. 

 Stylopodium conic. 



LTpper leaves with narrow linear seg- 

 ments. 

 Upper leaves with relatively broad seg- 

 ments. 

 Seed-face concave. 



Fruit glabrous or merely pu- 

 bescent. 

 Fruit spiny. 

 Seed-face flat. 



Fruit nearly as broad as long. 

 Fruit linear-oblong. 

 Stylopodium obsolete or flat. 

 Flowers white. 



Dorsal ribs filiform; plant aquatic. 

 Dorsal and lateral ribs prominent 

 and corky. 

 Stylopodium flat or flattish. 

 Stylopodium obsolete. 

 Flowers yellow. 



Fruit with winged ribs. 

 Fruit with merely filiform ribs. 

 Oil tubes more than one in the intervals. 

 Stylopodium conic. 



1. Hydrocotvle. 



5. Washingtonia. 

 7. bupleurum. 



3. Eryngium. 



20. O.XYPOLIS. 

 22. HERACLEUM. 



23. Daucus. 

 19. Angelica. 

 21. Pastinaca. 



19. Angelica. 



18. conioselinum. 



14. Ptilimnium. 



4. Chaerophyllum. 



6. Torilis. 



10. ClCUTA. 



11. Deringa. 



15. LlLAEOPSIS. 



8. Celeri. 

 13. Slum. 



17. Thaspium. 



9. ZlZIA. 



16. LlGUSTICUM. 



