224 COMPOSITE. (composite family.) 
1. R. laciniiita, L. (Tall Cone-flower.) Stem smooth, 
branching (3?-7° high); leaves smooth or roughish, the lowest pin¬ 
nate, with 5-7 cut or 3-lobed leaflets ; upper leaves irregularly 3-5- 
parted; the lobes ovate-lanceolate, pointed, or the uppermost undi¬ 
vided ; chaff truncate and downy at the tip; rays linear, long and 
drooping. — Low thickets, common. July - Sept. 
* * Disk broadly conical , dark purple or brown. 
2. R. triloba, L. Hairy, much branched, the branches slen¬ 
der and spreading; upper leaves ovate-lanceolate , sparingly toothed, 
the lower 3-lobed, tapering at the base, coarsely serrate (those from the 
root various) ; rays 8, oval or oblong ; chaff of the black-purple disk 
smooth, awned. (§)—Dry soil, Ohio and southward. Aug. — Plant 
2P-5 0 high; the heads small, but numerous and showy. 
3. R. speciosa, Wender. Roughish-hairy, branched; the 
branches upright, elongated and naked above, terminated by single 
large heads ; leaves lanceolate or ovate-lanceolate, pointed at both ends, 
petioled , 3-5 -nerved, coarsely and unequally toothed or incised ; invo¬ 
lucre much shorter than the numerous elongated rays; chaff of the 
dark purple disk acutish, smooth. — Dry soil, W. Penn, to Ohio. 
Plant l°-2P high; the rays V- 1£' long. 
4. R. fttlgida, Ait. Hairy, branching, the upright branches 
naked at the summit and bearing single heads; leaves spatulate-oblong 
or lanceolate, partly clasping, triple-nerved, the upper entire, mostly 
obtuse ; rays about 12, equalling or exceeding the involucre ; chaff’ of 
the dark purple disk nearly smooth and blunt. — Dry soil, Penn, and 
southward. — Variable, l 0 -3? high : the rays orange-yellow. 
birta, L. Very rough and bristly-hairy throughout, 
stems simple or branched near the base, naked above, bearing single 
large heads; leaves nearly entire ; the upper oblong or lanceolate, ses¬ 
sile; the lower spatulate, triple-nerved, petioled; rays (about 14) more 
or less exceeding the involucre ; chaff of the dull brown disk hairy at 
the tip, acutish. — Dry soil, W. New York to Wisconsin and south¬ 
ward. Aug. — Stem stout, 1° - 2P high; the heads large, but coarser 
and less showy than the preceding, variable as to the size of the rays. 
33. LEPACDYS, Raf. (Obeliscaria, DC-) 
Heads many-flowered; the rays few, neutral. Scales of the 
involucre few and small, spreading. Receptacle oblong or colum¬ 
nar : the chaff truncate, thickened, and bearded at the tip, P arll f 
embracing the flattened and margined achenia. Pappus none, or 
2 teeth. — Perennial herbs, with alternate pinnate leaves; the 
grooved stems or branches naked above, and terminated by single 
showy heads. Rays yellow or particolored, large and drooping > 
