88 COMMON CANADIAN WILD PLANTS. 



10. Tliaspiiim. Stem smooth. Leaves 1-3-ternately divided. Floioers 



yellow. Fruit not flattened, 10-winged or ribbed. 



11. .Kl h ;i s;i. Leaves twice or thrice ternately compound, the divisions 



finely dissected. No involucre: involucels of long narrow bract- 

 lets. Flowers white. Fruit ovate-globose, the carpels with 5 

 thick sharp ribs. 



12. Ligiis'ticum. Stem smooth, from large aromatic roots. Leaves 



twice ternate, coarsely toothed. Flowers white. Fruit with pro- 

 minent acute ribs, having broad spaces between them. 



13. Zizia. Stem slender, smooth and glaucous. Leaves 2-3-ternately 



compound. Flowers yellow. Rays of the umbel long and slender. 

 Fruit contracted at the junction of the carpels; the carpels nar- 

 rowly 5-ribbed. 



14. Cicu'ta. Stem streaked with purple, stout. Leaves thrice com- 



pound. Flowers white. Fruit a little contracted at the sides, the 

 carpels strongly 5-ribbed. 



15. < arum. Stem erect, slender, smooth. Leaves pinnately decom- 



pound, the divisions filiform. Eoots tuberous. Flowers white. 

 Ribs of the ovate or oblong fruit inconspicuous. 



16. Si mil. Stem grooved. Leaves simply pinnate. Flowers ivhite. 



Fruit as in No. 10. 



17. Cryptotse'nia. Stem smooth. Leaves 3-foliolate. The umbels ivith 



very unequal rays. Flowers white. Fruit nearly as in Nos. 10 

 and 11. 



2. Inner face of each seed hollowed lengthwise. 



18. Biipleu'rum. Stem smooth. Leaves perfoliate, ovate, entire. No 



involucre : involucels of 5 very conspicuous ovate mucronate 

 bractlets. Flowers yellow. 



19. 'flux niiim. Stem short, branching from the base. Flowers 



yellow. Leaves twice-pinnatitid. Roots spindle-shaped. No 

 involucre ; involucels 1-sided, of a few narrow bractlets. Ribs of 

 the ovate fruit slightly prominent. N. W. only. 



20. Osmorrlii'za. Leaves large, 2-3-ternately compound. Flowers 



white. Fruit linear-oblong, angled, tapering downwards into a 

 stalk-like base. Ribs of the carpels bristly upwards. 



21. Co' uium. Leaves large, decompound. Flowers white. Fruitovate, 



flattened at the sides, 5-ribbed, the ribs wavy. 



3. Inner face of each seed curved inwards at top and bottom. 



22. Erlge'iiia. Stem low and smooth. Leaves 2-3-ternately divided. 



Fruit twin. Carpels nearly kidney-form. Umbels 3-rayed, small, 

 Flowers white. 



