200 UMBELLIFERJE. (PARSLEY FAMILY.) 



- - Ribs all prominent and equal but not winged ; flowers white. 



12. Ligusticum. Ribs acute, with broad intervals. Stylopodium conical. Oil-tubes nu- 



merous. Smooth perennials, with large compound leaves. 



13. ^Ethusa. Ribs very broad and corky, acute. Stylopodium depressed. Oil-tubes soli* 



tary. Introduced annual. 



*4. Coelopleurum. Ribs thick, corky (mostly obtuse). Oil-tubes solitary, adherent to 

 the seed, which is loose in the pericarp. Stout glabrous sea-coast perennial. 

 ---- Dorsal ribs filiform, the lateral very thick and corky ; oil-tubes solitary. 

 \5. Crantzia. Small glabrous creeping perennials, rooting in the mud, with small simple 

 umbels and leaves reduced to hollow cylindrical jointed petioles. 



* * * Fruit flattened laterally, 

 t- Carpels depressed dorsally ; fruit short. 

 - Seed-face flat : flowers mostly yellow. 



16. Foeniculrtm. Bibs prominent. Oil-tubes solitary. Stout aromatic herb, with filiform- 



dissected leaves 



17. Pimpinella. Ribs filiform. Oil-tubes numerous. Glabrous perennials, with com- 



pound leaves. 

 ++ -H- Seed-face concave ; flowers white (yellow in n. 20) ; ribs filiform or obsolete. 



18. Eulophus. Oil-tubes numerous. Stylopodium conical. Glabrous perennials from 



fascicled tubers, with pinnately compound leaves. 



19. Anthriscus. Fruit linear, long-beaked, without ribs or oil-tubes, and with conical 



.Stylopodium. Leaves ternately decompound. 



20. Bupleurum. Fruit oblong, with slender ribs, no oil-tubes, and prominent flat stylo- 



podium. Leaves simple, perfoliate. 



-- +- Carpels terete or slightly flattened laterally ; flowers white (except n. 24). 



- Seed-face flat (or somewhat concave in n. 28) ; fruit short. 



Leaves 3-foliolate ; Stylopodium conical ; oil-tubes solitary. 



$1. Cryptotsenia. Ribs obtuse, equal ; fruit linear-oblong. 



= = Leaves once pinnate ; Stylopodium depressed ; oil-tubes numerous. Aquatic perennials. 



22. Slum. Fruit ovate to oblong ribs prominent, corky, nearly equal. 



23. Berula. Fruit nearly globose ; ribs inconspicuous ; pericarp thick and corky. 



== = == Leaves decompound. Oil-tubes solitary (none in n. 27). Perennials. 



24. Zizia. Ribs filiform ; Stylopodium none. Flowers yellow. 



25. Car urn. Ribs filiform or inconspicuous; Stylopodium short-conical. Leaf-segments 



filiform. Roots tuberous. 



26. Cicuta. Ribs flattish, corky, the lateral largest. Marsh perennials, with serrate leaf- 



lets, the veins often running to the notches. 



27. ^Egopodium. Ribs filiform ; oil-tubes none ; Stylopodium conical. Leaves biternate. 



= = == = Leaves finely dissected ; oil-tubes solitary. Very slender annuals. 



28. Leptocanlis. Fruit bristly or tuberculate, with rather prominent equal ribs. 



29. Discoplenra. Dorsal ribs filiform, the lateral very thick and corky. 



H- -H- Seed-face concave ; fruit ovate, glabrous, with depressed Stylopodium, and no oil-tubes. 



30. Centum. An introduced biennial, with spotted stems, and large decompound leaves. 



4+ ++ 4+ Seed-face concave. Fruit linear-oblong, with conical Stylopodium. 



31. Chaerophyllum. Fruit glabrous, with small mostly solitary oil-tubes. 



32. Osmorrhiza. Fruit bristly, with oil-tubes obsolete. 



^_ ^ H_ Carpels (as well as fruit) strongly flattened laterally. 

 H- Seed lunate, deeply sulcate on the face ; umbels compound, leafy-bracted. 

 88. Erigenia. Fruit nearly orbicular, with numerous oil-tubes. Low, nearly acauleseent 

 from a deep-seated tuber. Leaves ternately decompound. 



