WHITE 



to cure a disease peculiar to the South, known as break -bone 

 fever (Dengue), and it is without doubt from this property that 

 the name boneset was derived." 



ARROW-LEAVED TEAR-THUMB. 



Polygo>iiti)i sagittatiim. Buckwheat Family. 



Stem. — Four-angled; erect, or somewhat climbing by its prickles. 

 Leaves. — Arrow-shaped; short-stemmed. Flowers. — White or pale pink; 

 small; clustered. Calyx. — Usually five-parted; white or pale pink. Co- 

 rolla. — None. Stavicns. — Usually eight. Fisttl. — One, with three styles. 

 Fruit. — Sharply three-angled. 



This rather noticeable plant is common in low grounds, 

 bearing the name of '' scratch-grass " in some places. 



HALBERD-LEAVED TEAR-THUMB. 



Polygonum arifolium. Buckwheat Family. 



This plant is distinguished from P. sagittatimi by its taper- 

 pointed, long-stemmed leaves. 



WHITE SNAKEROOT. 



iPl. XLV 

 Eupatoruun ageratoides. Composite Family. 



About three feet high. Stetn. — Smooth and branching. Z^az/^j.— Op- 

 posite ; long-stalked; broadly ovate ; coarsely and sharply toothed. Floiuer- 

 heads. — White; clustered; composed of tubular blossoms. 



This species is less common but more beautiful and effective 

 than the boneset. It is found blossoming in the rich northern 

 woods of late summer. 



104 



