310 COMPOSITiE. RuDBECKiA. 



Prairies antl copses, (Mountains of Virginia?) Illinois! to Arkansas! 

 Western Louisiana ! and the borders of Texas! July-Aug. — Plant rather 

 stout and with a coarse habit, 2-4 feet high ; the receptacle when bruised, 

 and perhaps also the leaves, exhaling an anisate or vanilla-like odor, much 

 as in Lepachys. Leaves 3-5 inches in length ; the lower ones sometimes 

 undivided and the upper occasionally 3-lobed ; but usually the lower ones 

 only 3-parled or divided ; the lateral lobes smallest, lanceolate ; the termi- 

 nal ovate-lanceolate or ovate, acuminate, serrate. Peduncles short. Rays, 

 10 to 12, or rarely 20, 10-15 lines long, bright yellow. 



7. R. mollis (Ell.): stem hirsute-villous, branching; leaves sessile and 

 partly clasping, oblong, obscurely serrate, tomentose-canescenl on both sides, 

 the lower ones somewhat spatulate ; heads rather large ; scales of the invo- 

 lucre numerous, linear-lanceolate, villous, reflexed about half the length of 

 the rays; cliaff linear, canescent at the summit, rather obtuse, as long as the 

 purple corolla; achenia (small) minutely 4-toothed at the summit. — Ell. I 

 sk. 2. p. 453 ; DC. .' prodr. 5. p. 55G. JR. spalhulata, Pursh ! ji. 2. p. 574, 

 not of Michx. 



"Western districts of Georgia, Barlram ! Baldivin! Elliott! &c. Aug.- 

 Oct. — Plant 2-3 feet high, canescent throughout ; the branches simple and 

 terminated by a single head. Leaves 12-15 lines long, soft. Rays 15-20, 

 usually an inch loHg, pale yellow, but deep yellow at the base. Achenia 

 scarcely half the length of the narrow chaff, exactly 4-sided ; the angles 

 produced into indistinct and minute obtuse teeth. 



8. R. Heliopsidis : stem simple from a prostrate rhizoma, somewhat pu- 

 bescent with appressed hairs, terete, bearing 3-6 slender angled branches or 

 peduncles near the summit; leaves somewhat distant, ovate or oval, slightly 

 serrate, mostly obtuse, quintuplinerved, glabrous or nearly so, abruptly con- 

 tracted, the lower into long and slender, the upper into short petioles ; scales 

 of the involucre oblong or somewhat spatulate, minutely pubescent, at length 

 squarrose, shorter than the subglobose brownish purple disk, and much shorter 

 than the (10-12) oblong-linear spreading rays ; chaff of the receptacle ob- 

 tuse, canescenl-pubescent at the summit, about the length of the corolla ; 

 achenia of the rays triangular and as large as the quadrangular fertile ones ; 

 pappus nearly obsolete. 



a. almost glabrous ; leaves more or less serrate, sometimes acute ; invo- 

 lucre much shorter than the disk. 



(3. stem stouter, pubescent below with spreading, above with appressed 

 hairs ; leaves nearly entire, obtuse. 



Pine woods, &c. a. Columbus, Georgia, Dr. Boykin! /?• Cherokee 

 country of Alabama, in Avet places, Mr. Buckley ! Aug.-Sept. — Stem 

 about 2 feet high. Lower leaves 2-3 inches long, 1-2 broad, on petioles 2-6 

 inches long, which in /3. are hairy, pale beneath, dull above. Rays scarcely 

 an inch long, pale yellow, in /?. presenting an abortive style. Involucre and 

 disk exactly resembling some forms of Heliopsis la^vis, except that the latter 

 is brownish-purple : the achenia of the rays perfectly formed, and often 

 larger than the fertile fruit, but not ovuliferous. 



9. R. alismeefolia : glabrous; stem simple or sometimes branched, angled, 

 smooth below, scabrous towards the long and naked striate-furrowed summit, 

 terminated by large solitary heads; leaves (often membranaceous) somewhat 

 scabrous, oval, obtuse or slightly pointed, entire or sparingly repand-toothed, 

 3-5-nerved and reticulate-veined ; the radical and lower cauline tapering by 

 a cuneate base into slender petioles ; the uppermost cuneiform-obovate, 

 nearly sessile ; scales of the involucre linear, mostly shorter than the ovoid- 

 globose brownish disk, and much shorter than the (12-15) drooping rays ; 

 chaff of the receptacle rather obtuse, canescent at the summit, a little shorter 

 than the corolla; pappus coroniform, conspicuous, unequally crenatc-toothed. 



