162 UMBELLIFER^. 



Vittse several. Disk-lobes depressed ; riclges elevated 5. Conium. 



Viltse several. Disk-lobes conical : 6. Smyrnium. 



Section 2. Ammi'nese proper. Fruit as in 1, but seed flat ventrally. 



* Petals entire, tip acute or shortly inflexed. Vittse 1-2. 



Leaves simple. Flowers yellow. 7. Bupleurum. 



Leaves compound. Flowers white, dioecious 8. Triuia. 



Leaves compound. Flowers white, 2-sexual ' 9. Apium. 



** Petals 2-lobed, tip long inflexed. Vittse solitary in the furrows. 



Calyx- teeth obsolete. Vittse as long as the fruit 10. Carum. 



Calyx-teeth obsolete. Vittse very short 11. Sison. 



Calyx-teeth ovate, acute. Vittse long 12. Cicuta. 



*** Petals as in * ; but vittse several in each furrow (except in JEgopodium}. 



Calyx^-teeth acute. Leaves pinnate 13. Sium. 



C ilyx-teeth obsolete. Leaves 2-ternate. Vittse 14. JEgopodium. 



Calyx-teeth obsolete. Leaves various. Vittse many 15. Pimpinella. 



Section 3, Scandici'nege. Fruit elongate. Seed grooved ventrally. 



* Vittse many in each furrow, often faint 16. Conopoclium. 



*'* Vittse 0, or 1 in each furrow. 



Fruit f-1 in.; ridges almost winged 17. Myrrhis. 



Fruit 1-3 in. ; ridges prominent 18. Scandix. 



Fruit J in.; ridges vanishing upwards 19. Chserophyllum. 



Fruit J-J in.; ridges or obscure .20. Anthriscus. 



TRIBE IV. SESEIiI'NE/E. Fruit globose or ovoid, not laterally compressed ; 

 commissure broad ; lateral ridges distinct (except in 22*. Coriandrum) , 

 rarely winged, if so wings of opposite carpels not in contact. 



/Sub-tribe 1. Seseli'neee proper. Fruit subterete ; ridges not thickened or corky. 



Calyx-teeth small. Petals white, notched 21. Seseli. 



Calyx-teeth obsolete. Petals yellow, entire 22. Fceniculum. 



Sub-tribe 2. Corian'drese. Fruit globose ; ridges low, secondary broadest. 



22*. Coriandrum. , 



Sub-tribe 3. Cacliry'dese. Fruit subterete ; primary ridges acute ; outer coat 

 of pericarp lax 23. Crithmum. 



Sub-tribe 4. CEnan'tlieae. Fruit subterete; primary ridges thick, lateral 

 forming a corky rim round the carpel. 



Bracteoles whorled 24. GEnanthe. 



Bracteoles unilateral 25. ^Ethusa. 



Sub-tribe 5. Sclmltz'iese, Fruit subterete; lateral ridges thickened or 

 winged 26. Silaus. 



Sub-tribe 6. Seli'nese. Fruit dor sally compressed; primary ridges broad, 

 thick. 



Seed concave ventrally; vittse several 27. Meum. 



Seed almost flat ventrally ; vittae many or obscure 28. Ligusticum. 



Seed biconvex; vittse solitary in the dorsal furrows 29. Selinum. 



