PARSLEY FAMILY 613 



Umbels (at least some of them) sessile or subsessile in the forks, as well as 

 terminal on the branches. 

 Leaves with large leaflets ; umbels with about 5 to 16 rays ; fruit elliptic- 

 ovate, not tuberculate ; biennial 5. Apium. 



Leaves dissected into linear lobes; umbels 3 or 4-rayed; fruit elliptic- 

 cordate, tuberculate; annual 6. Apiastrum. 



Umbels terminal on the branches. 



Eibs prominent, conspicuously scabrous; umbels with unequal rays; an- 

 nuals 7. AsiilOSELINUir. 



Eibs filiform, smooth ; umbels with equal or subequal rays. 



Bracts 3-parted to the middle into filiform divisions, closely reflexed; 

 upper leaves ternately decompound and dissected ; biennials.. 



8. Ammi. 

 Bracts entire or merely toothed, spreading or rarely reflexed; leaves 

 pinnate or bipinnate ; leaflets entire ; perennials.. ..9. Carum. 

 Oil-tubes 2 or more in the intervals, at least in some of them. 



Pedicels of the flowers equal or nearly so ; calyx-teeth not rigid. 

 Leaves once to thrice ternate or pinnate ; mostly tall plants. 



Leaflets linear, mostly entire; ribs filiform 10. Eulophus. 



Leaflets ovate, incised; ribs prominent, acute 11. Ligusticum. 



Leaves pinnate or bipinnate, the divisions or leaflets oblong, entire ; alpine 



dwarf 12. Podistera. 



Pedicels of the sterile flowers surpassing or equaling the fruit; sterile calyx- 

 teeth rigid-subulate, very prominent 13. Oreonana. 



Flowers yellow. 



Stems of medium height, the leaves mostly basal ; leaflets broad 14. Velaea. 



Stems very tall, leafy ; leaves dissected into numerous filiform segments 



15. Foenicttlum. 

 Eihs, or some of them, corky. 



Oil-tubes solitary in the intervals ; plants of marshes or stream banks. 



Kibs confluent, forming a continuous corky covering ; leaves simply pinnate 



16. Berula. 

 Eibs corky but distinct. 



Stems erect ; leaves plane, with serrate leaflets. 



Styles short (about % to % as long as the fruit) ; fruit broadly ovate or 



roundish 17. CiCUTA. 



Styles long (about i/^ as long as the fruit) ; fruit subcylindric 



18. Oenanthe. 

 Stems creeping; leaves consisting of hollow cylindrical petioles 



19. Lilaeopsis. 

 Oil-tubes 2 or more in the intervals, at least in some of them. 



Leaves simply pinnate; stems leafy; ribs all corky; marsh or aquatic plants 



20. SiUM. 

 Leaves once or twice ternate, all basal ; lateral ribs corky-thickened, the others slen- 

 der; slopes towards the arid interior (transmontane) 21. Okogenia. 



II. Some or all of the ribs of the fruit winged. 

 Lateral ribs winged, the dorsal and intermediate ribs filiform ; fruit flattened dorsally. 



Corollas of marginal flowers of umbel radiately enlarged; oil-tubes reaching only half way 



to base of fruit; tall coarse plants 22. Heracleum. 



Corollas all alike; oil-tubes as long as the fruit (except in no. 25). 



Leaves and peduncles arising from the root-crown, or from only a very short proper stem. 

 Lateral wings of fruit corky-thickened; flowers commonly yellow; tall plants with 



large ample leaves 23. Leptotaenia. 



Lateral wings thin; flowers yellow, white or purple; low plants with medium or 



small leaves 24. Lomatium. 



Stems tall, leafy. 



Dorsal and intermediate ribs 3 ; flowers yellow. 



Leaves pinnate, the leaflets ovate, toothed 25. Pastinaca. 



Leaves ternately compound and dissected into filiform segments.. 26. Anethum. 

 Dorsal and intermediate ribs apparently 5 ; leaves simply pinnate ; flowers white 



27. OXYPOLIS. 



Lateral, dorsal and intermediate ribs all winged or very prominent. 

 Tall plants with leafy stems ; flowers white. 

 Umbellets not capitate. 



Eibs not corky-thickened ; fruit flattened dorsally ; petioles not inflated. 



Leaflets incised or deeply toothed ; oil -tubes solitary in the intervals 



28. CONIOSELINUM. 



