96 BOTANY OF LA SALLE COUNTY. 



Jh. C. lanceolata var. augustifolia. Leaves narrow, 



crowded. 

 C. palnata. Nearly smooth; 10 10 15 in., leafy; 



leaves 3 lobed, rigid. 

 C. tripteris. P. Tall, Gareopsis. Smooth, 4 to 



9 ft.; leaves palmately 3 to 5 lobed. 

 C. trichosperma. Smooth; leaves pinnate, 3 to 7 



leaflets, serrate. Wet lands. 



C. aurrea. Nearly smooth, 1 to 3 ft.; leaves 3 to 

 7 leaflets, or undivided, serrate or lobed. Wet 

 lands. .; ; 



BI DENS. Bur Marigold. Achenes or seeds flat and 



crowned with two or more barbed awns by 



which they stick to clothing. 

 B. frondasa, Common Beggar Ticks, Stick 



tight. Cuckle. Awns 2. 

 B. connata. Swamp Beggar Ticks. Seeds look 



shriveled, awns 4. 

 B. cornua. Smaller Bur Marigold. Heads nodding, 



rayed or not awns 4, barbed downward; 5 to 30 



in. Along streams. 

 B. chrysanthemoides. Rays golden, 1 in. long; 



swamps. 

 HELENIUM. Smeeze-weed. Branching from base, 



very leafy, leaves decarred, alternate, 1 to 3 ft: 

 H. autumna le. Almost smooth; leaves toothed; 



rays 3 to 5 cleft. Damp, rich lands. 

 DYSODIA. A. Plants with finely divided leaves 



and a strong odor. 



D. chrysanthemoides. Dog Fennel. I/eaves with 

 thread-like lobes, opposite; rays few, short; 6 to 

 18 in. Waste places. 



ANTHEMIS. Branching with finely divided leaves; 



strong scented. 

 A. cot. Mayweed. Branching from ground; slen- 



