COMPOSITE. 204 LEPACHYS. 



2. Z. MULTIFLORA. — ffeatfs pedunculate ; Zearej ovate-lanceolate, on 

 short stalks. Native of the Southern States. Z. coccinca, with brilliant 

 scarlet flowers, and Z.panciflora, with bright yellow flowers, are also garden 

 annuals well known among us. All the species are raised from seeds in a 

 light, rich soil. 



23. RUDBE'CKIA. 



Ray-flowers neutral, disk perfect; involucre with a double 

 row of leafy scales; receptacle conic, chaffy ; pappus or a 

 4-toothed margin. 



Named after the celebrated Olaus Rudbeck, prof of botany at Upsal, 

 Sweden. Perennial herbs with large (usually yellow) flowers. Lvs. 

 alternate. Scales 6 in each row. Fls. of the disk numerous, border 5-cleft, 

 of the ray about 12, very long, lanceolate, flat, pendulous, with 2 or 3 terminal 

 teeth. 



1. R. lacinia'ta. 



Glabrous; lower leaves pinnate, segments 3-lobed ; upper ones ovate; 

 pappus crenate. In the edges of swamps and ditches. A tall, sliowy plant 

 resembling the sunflower, from which, however, it is readily distinguished by 

 its conical disk and its drooping rays. Stem round, branching, 6 — 8 feet 

 high. LeJlVes attenuate, rough; upper ones generally ovate, the rest various- 

 ly divided, toothed or cut, petiolate. Flowers large, terminal. Rays 1 — 2 

 inches long, oblanceolate, bright yelloW; Aug. Smooth Rudbeckia. 



2. R. HIRTA. 



Very hirsute or hispid; stzm simple or somewhat branched; pedundts 

 naked; leaves ovate-spalhulate, 3-nerved, petiolate, denticulate, the upper 

 ones sessile, ovate-lanceolate ; involucre scales numerous, narrow, imbricated 

 in 3 rows ; rays spreading. A beautiful flowering plant, in dry soils. Western 

 N. Y., &c. Stems subsimple or branching from the base, covered with 

 prickly prominences, each branch leafless towards the summit and bearing a 

 large head with 12—15 bright yellow rays. These are an inch long, and sur- 

 round a broadly conical disk of dark purple or dark brown chaff" and flowers. 

 July — Sept. Rough Rudbeckia. 



Echinacea purpurea (Manch), the Rudbeckia purpurea of Linn, native 

 of Virginia is a cultivated plant 4 feet high with singularly beautiful flowers. 

 The rays are about 15, 2 or 3 inches in length, purple, pendulous. Disk 

 conical, brown. 



24. LE'PACHYS. 



Involucre in one series of linear scales; ray-flowers few, 

 neutral, disk perfect ; receptacle columnar, chafiy ; pappus 0; 

 fertile achenia compressed, 1 — 2-wingcd. 



Perennial herbs. Lvs. alternate, pinnately divided. Heads of flowers 

 yellow, with long, drooping rays. Chaff" obtuse and bearded at the summit. 



L. PINNA'TA. T. ^ G. Rudbeckia pinnata. .\fx. 



Scabrous; leaves a.\\ pinnate, the divisions 3 — 7, some of the lower ones 

 2-parted, the rest undivided ; rays elongated. In dry soil. Western N. Y. 

 Stem 2—4 feet high, furrowed and hispid. Heads very large. Rays yellow, 

 about 2 inches in length, reflexed, the disk ovate, purple. 



