33b LXXV. COMPOSITE. ZINNIA, 



prominences, each branch leafless towards the summit and bearing a large head 

 with 13 15 bright yellow rays. These are an inch long, and surround a broad- 

 ly conical disk of dark purple or dark brown chaff and flowers. July Sept.} 



5. R. FULGIDA. Ait. (R. chrysomela. Michx. R. spatulata. PA.) 



St. hirsute, with rigid hairs ; branches slender, naked above; Ivs. strigose 

 pubescent, remotely denticulate, radical petiolate, ovate, cauline lance-oblong, 

 tapering to the sessile, subclasping base ; scales obldlg, spreading, as long as 

 the spreading rays; chaff linear-oblong, obtuse. Mountains, Penn. to Ohio! 

 and Ga. Stem 1 3f high. Rays 12 14, scarcely longer than the leafy invo- 

 lucre, deep orange-yellow. July, Oct. f 



6. R. SPECIOSA. Wender. 



St. hispidly hirsute ; branches slender, elongated, naked above ; Ivs. sca- 

 brous-pubescent, strongly dentate, radical ones broadly ovate, 5- veined, on long 

 petioles, cauline ovate and lanceolate, 3-veined, upper sessile; scales lance-lin- 

 ear, much shorter than tb spreading rays ; chaff linear-oblong, acute. Bor- 

 ders of woods, 111. Jenn&ij I Ohio! to Penn. A large and very showy species, 

 2 4f high. Leaves rather thin, radical 4 5' by 3 1', the teeth mucronu- 

 late ; petioles 6 10' long. Rays about 18, oblong,linear, bright yellow. Aug. 

 Oct. f 



31. ECHINACEA. Mcench. 



Gr, %tvos, the hedgehog ; from the character of the paleae. 



Involucre scales imbricated in 2 rows ; ray-flowers neutral ; disk- 

 flowers $ ; receptacle conic, with rigid, mucronate palese ; pappus 0. 

 ^ Lvs. alternate. Rays purple, pendulous. 



1. E. PURPUREA. Momch. (Rudbeckia Linn.') Purple Cone-flower or 

 Comb-flower. Very rough ; lower Ivs. broad-ovate, attenuate at base, 



remotely toothed ; cauline ones lanceolate-ovate, acuminate, nearly entire ; rays 

 very long, deflexed, bifid. Thickets and barrens, Western ! and Southern States. 

 A tall, handsome plant, often cultivated. Stem 4f high, branched, sulcate. 

 Leaves 4 8' long, as wide, rough, with short, stiff bristles, 3-veined. Heads ' 

 large, solitary, on long peduncles. Disk thickly beset with the stiff, pointed, 

 brown chaff. Rays about 15, 2 3' long, pendulous. July Sept. Root black, 

 pungent, medicinal. | 

 0. Rays nearly white. 111. Dr. Mead in T. <$ G. Fl. Am. 



2. E. ANGUSTIFOLIA. DC. (Rudbeckia. pallida. Null.) 



St.. hispid, subsimple, slender, naked above ; Ivs. entire, hispidly pubescent, 

 3-veined, lower ones lanceolate, petiolate, upper lance-linear, sessile; scales in 

 about 2 rows, short ; rays 12 20, slender, drooping. Prairies and marshes, 111. 

 Mo. to Tex. Plant of a more slender habit than the last, 2 31' high. Leaves 

 3 6' by 3 6". Petioles 8" long. Heals on long, naked peduncles. Rays 

 1 2' long, purple, varying to white. Disk fcrown. May J uly. 



32. LEPACHYS. 



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

 disk perfect ; receptacle columnar, chaffy ; chaff obtuse and bearded 

 at apex ; pappus ; fertile achenia compressed, 1 2-winged. 1\. Lvs. 

 alter nale, pimialely divided. Hds. of flowers yellow, wiUi long, droop- 

 ing rays. 



L. PINNATA. Torr. & Gray. (Rudbeckia. MX. Obeliscaria. Cass.) 

 Scabrous; Ivs. all pinnate, the divisions 3 7, some of the lower ones 2- 

 partcd, the rest undivided ; rays elongated. In dry soil, Western N. Y., West- 

 ern ! and Southern States. Stem 2 4f high, slender, furrowed and hispid. 

 Heads very showy. Rays yellow, about 2' in length, pendulous, the disk ovate, 

 purple. 



33. ZINNIA. 



Dedicated to John Godfrey Zinn.a German botanist, 1557. 



Involucre scales oval, margined, imbricate ; rays 5, persistent, en- 



