COMPOSITE. 127 



2. C. Parthe'nium, Pers. (PEVEKFEW.) Stem branch- 

 ing, leafy. Leaves twice-pinnately divided, the divisions 

 ovate, cut. Heads corymbed. Escaped from gardens. 



3. C. Balsam'itSB, L. (COSTMARY.) A garden-escape, 

 smooth, with pleasant odour. Leaves pale, oblong, some- 

 what toothed. Heads small, pale yellow. 



33. BEIXIS, Tourn. DAISY. 



B. perenniS, the true Daisy, a native of the Old World. 

 is a low stemless herb. It is an uncommon garden escape. 

 The heads are many-flowered with numerous pistillate rays. 

 The scales of the involucre equal, in about 2 rows, herbace- 

 ous. Receptacle conical. Pappus wanting. 



34. MATRICA'RIA, Tourn. WILD CHAMOMILE. 

 M. inodo'ra, L. Leaves twice- piunately divided into 

 very narrow lobes. Heads large, naked-peduncled, the rays 

 many and long. Chiefly Atl. Prov. 



35. AN'THEMIS, L. CHAMOMILE. 



1. A. Cot'ula, DC. (MarutaCotula.) (MAY-WEED.) Stem 

 branching. Leaves thrice-pinnate, finely dissected. Odour 

 disagreeable. Rays soon reflexed. Roadsides everywhere. 



2. A. arven'SiS, L. (CORN CHAMOMILE.) Resembling the 

 last, but the leaves are not so finely dissected, and the odour 

 not so unpleasant. Atl. Prov., rare. 



36. RUDBECK'IA, L. CONE-FLOWEK. 



1. R. ladnia'ta, L. Rays linear, 1-2 inches long, droop- 

 ing. Disk greenish-yellow. Stem tall, smooth, branching. 

 Lowest leaves pinnate, of 5-7 lobed leaflets ; upper ones 3-5- 

 parted, or the uppermost undivided and generally ovate. 

 Heads terminal, long-peduncled. Swamps. , 



2. R. hir'ta, L. Rays bright yellow. Disk purplish- 

 brown. Stem very rough-hairy, naked above, bearing 

 single large heads. Leaves 3-ribbed, the lowest spathulate, 

 narrowed into a petiole, the upper ones sessile. Meadows. 



3. R. eolumna'ris, Pursh. (Lepachys columnaris, Torr. 



