164 UMBELLIFER^. 



f Fruit muricate or prickly 



Ridges of fruit elevated, with strong spines 35. Caucalis. 



Ridges obscure 20. Anthriscus. 



ft Fruit smooth, glabrous, rarely pubescent. 



J Fruit short, ovoid, subalobose, or didymous. 



Flowers white. Ridges filiform ; vittse solitary 4. Physospermum. 



Flowers white. Ridges thick, waved ; vittse several 5. Coniura. 



Flowers yellow. Ridges stout, even ; vittse several 6. Smyrnium. 



H Fruit narrow, but not beaked. Flowers white. 



Ridges slender ; vittse numerous 16. Conopodium. 



Ridges obtuse ; vittse solitary 19. Chserophyllum. 



Primary ridges winged ; vittse 2-3 27. Meum. 



J}} Fruit narrow, beaked. Flowers white. 



Beak short; ridges sharp 17. Myrrhis. 



Beak long ; ridges obtuse 18. Scandix. 



Beak moderate ; ridges obscure 20. Anthriscus. 



** Seed flat ventrally or nearly so. (Fruit short in all.) 

 t Petals white, entire, with an incurved point. 



Ridges slender; vittse 1-3. Carpophore entire or 2-fid 9. Apium. 



Ridges stout, sharp ; vittse numerous 23. Crithmum. 



tt Petals yellow, entire or with an incurved point. 



Ridges slender; carpophore 2-partite 10. Carom. 



Dioecious. Vittse within the stout ridges 8. Trinia. 



Bracteoles 0. Vittse solitary 22. Fceniculum. 



Bracteoles many. Vittse many 26. Silaus. 



ttt Petals white, obcordate, notched or 2-lobed. 

 IF Calyx-teeth distinct.. 



Fruit didymous ; ridges depressed ; vittse solitary 12. Cicuta. 



Fruit subterete ; ridges depressed ; vittse 1-2 21. Seseli. 



Fruit globose ; ridges obscure ; vittse 22*. Coriandrum. 



Fruit subterete ; ridges stout; vittse solitary 24. (Enanthe. 



Hf Calyx-teeth obscure or 0. 



Fruit covered with hooked bristles 34. Dauctis. 



Bracts and bracteoles linear 10. Carum. 



Bracteoles 0. Ridges slender ; vittse ; styles slender 14. JEgopodium. 



Bracts and bracteoles unilateral, deflexed 25. ^Ethusa. 



Bracts few or 0, bracteoles many. Ridges almost winged. ..28. Ligusticum. 



B. Fruit much dorsally compressed, broadly winged. 



* Lateral wings of the opposite carpels closely contiguous. 



Petals white, notched. Wings thin, vittse club-shaped 32. Heracleum. 



Petals v?.riou Wings thin, vittse long 31. Peucedanum (proper). 



Petals white. Wings with a thickened border 33. Tordylium. 



