BOTANY OF LA SAL,L,E COUNTY. 89 



clusters of small heads. 



S. caesia. Stem round, smooth; leaves long-, nar- 

 row, serrate, sessile; heads in short clusters. 

 S. latifolia. Angular, zigzag-; leaves broad-ovate, 



thin. 

 S. bicolor. Hairy, leaves broad, lanceolate, acute 



at both ends, little serrate petiolate; clusters of 



flowers form a loose spike, W. 

 S. bicolor var. con color. Flowers Y. Our form 



of the plant. 

 S. semper virens. Smooth, stout, 1 to 8 ft.; leaves 



lanceolate, a little clasping; flowers in a loose 



panicle. One specimen collected by Mr. L. A. 



Williams, Atty. at Law of Ottawa near the Salt 



Marsh in fall of 1895. . 



S, speciosa. Leaves thickish; panicle pyramidal. 

 S. patula. Angled, smooth, 2 to 4 ft. leaves 4 to 8 

 in. long, ovate, acute, sessate, pale, rough above, 



veiny below; bralches spreading. Swamps. 

 S. rugosa. Rough-hairy, leafy, 1 to 6 ft., leaves 



thickish and rugose. 

 S. neglecta. Leaves thickish, smooth; 2 to 4 ft. 



Damp lands. 



S. arguta. Stem angular; leaves ovate, thin ser- 

 rate, lower petioles margined. Moist places. 

 S. juncea. Smooth 1 to 3 ft., lower leaves with 



winged and hairy petioles, sharp sessate, 



racemes long, drooping. 

 S. Missouriensis. Leaves long, narrow, margins 



very rough. 

 S. serotina. Stout, smooth; leaves lanceolate, 



acute, serrate. 

 S. serotina var. gigantea. S. gigantea of 5th Ed. 



Tall, more or less soft-hairy. 5 to 8 ft. 

 S. -Canadensis. Rough-hairy, stout, tall, 3 to 6 ft. 



leaves narrow, acute, more or less serrate. Com. 



