74 COMMON CANADIAN WILD PLANTS. 



large and thin, ovate ; the upper elliptical-lanceolate. Raceiacs 

 much shorter and looser than in No. 7, and the rays much larger. 

 Moist woods and thickets. 



0. S. altis'siina, L. (S. ruyotsa, Mill, in Maconu's Catalogue.) 

 Stem rough-hairy, less than a foot hiy/t. Leaves ovate-lanceolate 

 or oblong, coarsely serrate, veiny, often rugose. Racemes panicled, 

 spreading. Borders of fields and copses. 



10. S. neglecta, Torr. and Gr. Stem smooth, 2-3 feet high, 

 stout. Leaves thickish, smooth both sides, the upper oblong- 

 lanceolate, nearly entire, the lower ovate-lanceolate or oblong, 

 sharply serrate, tapering into a petiole. Heads rather large. 

 Racemes short and dense, at first erect and scarcely one-sided, at 

 length spreading. Swamps. 



11. S. nemoralis, Ait. Stem minutely and closely hoary- 

 pubescent, simple or corymbed. Leaves more or less hoary, 

 slightly 3-nerved, obscurely serrate or entire ; the lower oblancco- 

 late, somewhat crenate, and tapering into a petiole. Racemes 

 numerous, dense, at length recurved, forming a large panicle. 

 Dry fields. 



* * Racemes one-sided and recurved, and the leaves plainly 3-ribbed, 



12. S. Canadensis, L. Stem rough-hairy, tall and stout. 

 Leaves lanceolate, serrate, pubescent beneath, rough above. 

 Panicle exceedingly large. Very common along fences and in 

 moist thickets. 



13. S. sero'tina, Ait. (S. serotinu, Ait., var. yiyantea, Gray, 

 in Macoun's Catalogue.) Stem very smooth, tall and stout. 

 Leaves lanceolate, serrate, the veins beneath pubescent. Panicle 

 pyramidal, of many curved racemes. Low thickets and meadows. 



14. S. gigante'a, Ait. (.9. serotina, Ait., in Macoun's Cata- 

 logue.) otcm smooth, stout. Leaves lanceolate, taper-pointed, 

 sharply serrate, except at the base, smooth both sides, rough- 

 ciliatr. Panicle large, pubescent. Open thickets and meadows. 



****** Tnjl .rcscence a fiat-topped corymb. 



1."). S. lanceola'ta, L. Stem pulu-sueut above, much branched. 

 Leaves linear- lanceolate, the nerves (o-o) a: id. margins rough- 

 pubescent, llrndsi-i dense corymbed clusters, giving a decidedly 

 characteristic aspect to this species. Low river-margins. 



