316 CLASS XIX. ORDER I. 



The stems are erect, round, hairy, branched at top only. The 

 leaves, which are perforated by the stem, are rather perfoliate 

 than connate, since they have not the character of two leaves 

 joined together, but of one entire leaf, having its four principal 

 veins proceeding at right angles from the four quarters of the 

 stem, two of them being situated in the place of the supposed 

 junction. The upper leaves, however, are generally divided 

 into pairs. The main leaves are acuminate, decreasing gradu- 

 ally in breadth from the stem, where they are widest, to the ex- 

 tremities. They are serrated, wrinkled, pale underneath, and 

 hairy, especially on the veins. Flowers in corymbs with hairy 

 peduncles. Calyx cylindrical, imbricate, the scales lanceolate, 

 acute, hairy. Each calyx contains about twelve or fifteen 

 florets, which are tubular, with five spreading segments, and 

 surrounded with a rough down. The stamens in each consist 

 of five soft filaments, with blackish anthers united in a tube. 

 Style filiform, divided into two branches, which project above 

 the flower. Seeds oblong on a naked receptacle. — In low 

 lands and meadows, common. — August. — Perennial. — The 

 whole plant is bitter and used as a tonic. 



EuPATORiuM PURPUREUM. L. Trumpet Weed. 



Leaves petioled, four or five in a whorl, ovate- 

 lanceolate, serrate, wrinkled and veiny, somewhat 

 rough ; stem fistulous. Willd. 



A tall plant, growing about the borders of thickets in wet land. 

 Stem five or six feet in height, straight, round, purplish, hollow 

 throughout its whole length, its tube not being interrupted by 

 joints. Leaves in whorls of four, five, or six ; ovate, rugged 

 with veins, acute. Flowers purple, in a large, branching, termi- 

 nal corymb. Calyx containing about eight florets, with very 

 long styles. — August, September — Perennial. 



EUPATORIUM VERTICILI.ATUM. MuM. WhorUd EupU- 



torium. 

 Leaves petioled, in whorls of three or four, ovate- 

 lanceolate, wedge shaped at base, unequally serrate, 

 smoothish ; stem solid, smooth. Willd. 



