200 UMBELLIFERJS. (PARSLEY FAMILY.) 



i- (- 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. Ccelopleuruin. 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. 



i- Carpels depressed dorsally ; fruit short. 



- Seed-face flat ; flowers mostly yellow. 



16. Foeniculum. Ribs prominent Oil-tubes solitary. Stout aromatic herb, with filiform- 



dissected 'eaves 



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



pound leaves. 



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



is. Eulophus. Oil-tubes numerous. Stylopodium conical. Glabrous perennials froic 

 fascicled tubers, with piunately compound leaves. 



19. Anthriscas. Fruic linear, long-beaked, without ribs or oil-tubes, and with conical 



Stylopodium. Leaves ternately decompound. 



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



podium. Leaves simple, perfoliate. 



-i- -i- 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. 

 il. Cryptotaenia. Ribs obtuse, equal ; fruit linear-oblong. 



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

 -2. 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. y.i/in. Ribs filiform ; Stylopodium none. Flowers yellow. 



2."). Carum. Ribs filiform or inconspicuous; Stylopodium short-conical. Leaf-segments 

 filiform. Roots tuberous. 



2o. Cicut a. Ribs flattish, corky, the lateral largest. Marsh perennials, with serrate leaf- 

 lets, the veins often running to the notches. 



27. .aSgopodium. Ribs filiform ; oil-tubes none ; Stylopodium conical. Leaves biternatc. 



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



2^. Leptocaulis. Fruit bristly or tuberculate, with rather prominent equal ribs. 



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



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



30. Coiii 11111. An introduced biennial, with spotted stems, and large decompound leaves. 



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

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



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



i- -i- -i- Carpels (as well as fruit) strongly flattened laterally. 

 H- Seed lunate, deeply suleate on the face ; umbels compound, leafy-braeted. 



33. Erigenia. Fruit nearly orbicular, with numerous oil-tubes. Low, nearly acaulescent. 



from a deep-seated tuber. Leaves ternately decompound. 



