Umbelliferae 79 



Bracteoles short, whorled. Oenanthe. 



Bracteoles long, unilateral. Aethusa. 



4. Fruit as above, lateral ridges thickened or 

 winged. Silaus. 



5. Fruit dorsally compressed. Primary ridges broad, 

 thick. 



Seed grooved ventrally, vittae several. Meum. 



Seed flat or slightly concave ventrally, vittae many 

 or obscure. Ligusticum. 



Seed biconvex : one vitta in each of the dorsal 

 furrows. Selinum. 



Tribe 7. Peucedaneae. Lateral ridges winged, much 

 broader than the three dorsal ridges which are often 

 only feebly developed. Seed narrow in section. 



Subtribe i . A ngeliciiiae. Lateral ridges of opposite 

 carpels not appressed but gaping. 

 Only British genus : 



Angelica (including *Archangelica). 



Subtribe 2. Ferulinae. Lateral ridges appressed, 

 forming a wing round the fruit. 



Only British genus : Peucedanum. 



Subtribe 3. Tordyliinae, As Ferulinae but wing 

 hardened. 



Vittae clavate. Margins of wing thin. Heracleum. 

 Vittae slender. Margins of wing thick. Tordylium. 



B. Diplozygieae. Secondary ridges as large as or 

 larger than the primary. 



Tribe 8. Danceae. Secondary ridges spinous. 



Daucus. 



