1 8 OOMPOSSXM. 



Pry soil. July— Sept Sinn 2 to 5 feet high, very branching. Leaves 2 to 4 

 inches long, 3-veined. Heads small, numerous and showy. 2. vdc-i-r 



yellow, y 2 to 1 inch long, % as wide. 



3. B. speciosa, lender. Showy Gone-flower. 



Poughish-hniry. branched: leaver lanceolate or ovate-lanceolate, pointed at bcrh 

 ends, petioled, 3 to o-nerved, coarsely and unequally toothed or cut ; involucre much 

 shorter than the numerous elongated rays; chaff of the disk aeutish, smooth. 



Pry soil. Aug. — Oct. &>cm 1 to 2 feet high, branched, the branches tq 

 elongated and naked above, terminated by single large L rather thin, 



those of the root i to 5 inches long by 3 to 4 wide, on petioles, C to 10 inchc - 

 Kays about 18, oblong-linear, bright yellow. 



4. E. fulgida, Ait Small-flowered Rudbechia. 



Hairy: stem with slender branches : leases spatulate-oblong or lanceolate, partly 

 clasping, 3-nerved, the upper entire, mostly obtuse: scales oblong, spread n 

 long as the spreading rays: chaff linear-oblong, obtuse. 



Pry soil. July — Oct. St m 1 to 3 feet high, branching, the upright branches 

 naked at the summit and bearing single heads. - 2 to 



than the leafy involucre, deep erange-yellow, 2-cleft at the summit. Disk nearly 

 hemispherical, purple. 



5. E. hirta, L. Hairy RudbecJcia, 



Yery rough and bristly -hairy : stem simple or branched near the base: 

 nearly entire : the upper oblong or lanceolate, sessile : the lower spatulate,. 3-r. . 

 on petioles: scales nearly equalling the rays : chaff hairy at the tip. 



Drj soil. July — Sept. A showy plant. 2 to 3 feet high, with the stem simple or 

 branched near the base, naked above, bearing single large heads. Rays 12 to 15, 

 bright yellow, 1 inch long, surrounding a broadly conical disk of dark purple or 

 brown chaff and flowers. 



2& LEPACHYS, Eaf. 



Gr. -.hick, refering to the thickened tips of the chaff. 



Heads many-flowered ; the rays few, neutral, in a single 

 series ; those of the disk small, tubular, perfect. Scales 

 of the involucre few, small, spreading. RECEPTACLE 

 oblong or colunmer j the chaff truncate, thickened and 

 bearded at the tip, partly embracing the flattened and mar- 

 gined achenia. Pappus none, or 2 teeth. — Perennial I 

 with alternate pinnate leaves, and showy heads of yellow flower? . 

 long drooping rays ; disk grayish. 



L. pixxata, Torr. & Gray. Tall Lepaehys. 



Hairy with minute, appressed "hair? : bates pinnate : leaflets 3 to T, lanceolate, 

 acute at both ends, toothed or entire : disk oblong; rays much longer than the disk. 



Pry soil. July—- 3 to •» feet high, grooved, with naked br. 



above, terminated by single showy heads. Rays yellow, about 2 inchi •- 

 fly toothed at the apex. Disk ovate, exhaling an anisate odor when I: 

 '■'. of the ray 3-ang:ed, hairy : that cf the disk compressed, smooth or ciliate, 



29. HELIAXTHUS, Linn. Sunflower. 



Gr. hdics. the sun, and tmthos, &f.ov:cr. 



Heads many-flowered ; ray-flowers in one series, ligu- 

 . neutral j those of the disk ; tubular, perfect. I>~ yol- 



