250 coMrosiT.E. (compositk family.) 



11. K. laciniata, L. Stem t^muuth, tall (4°-G''), branchiiif; ; leaves 

 rOii^^li ; tlie lowt-st |)iiiiiiitely divided, tlie divisions lanceolate or oliloiig, lobed 

 or piiinatirtd; the iiiidille ones .3 - ."i-parted ; the uj)])erriiost often iindivided, 

 tootlied ; disk yellowish, ovate or eonieal ; rays large, drooping ; chaff of tiie 

 receptacle trnncate, jiuliescent at tin- ajtex, ahont as long :us the 3-angled 

 achcnia. — Swamps, Florida, ami northward. July - August. — Leaves large. 

 Hays l'-2' loiiir. 



N'ar. humilis, (Jray ; Stem 2^ -4'^ liigli, corymhosely branched ; lowest 

 leaves mu.stly entire, round-cordate ; .stem leaves ."i - .5-lul)ed ; disli globose. — 

 Kiver banks along the mountains of Cieorgia. August. 



12. R. heterophylla, Torr. & (iray. I'ultcscent ; stem corymbose 

 above; leaves coarsely serrate, rungii above, tomcntose beneath; tlie lowest 

 orbicular-cordate or 3 - 5-partetl, on long jtctioles; the middle ones 3-iolied ; 

 the upjiermost ovate, sessile and entire; disk globose, yellowish ; rays droo])- 

 ing ; cliaff of the receptacle acute ; aclienia 3-sided. — Swamps, Miihlle Flor- 

 ida. Augu.st. — Stem 3° -4° high. Leaves and heads uuuli smaller tiian iu 

 the preceding. 



* * Dish columnar, elomjaled: stems tuU, simjile. 



13. R. maxima, Nutt. Smooth; leaves large, membranaceous, oval or 

 oblong, slightly toothed or entire, feather-veined, the lower ones petioled, 

 the upper clasping ; head solitary, long-peduucled ; rays large, droojiing. — 

 Wet jiiiie barrens. West Florida, and westward. Aiigust. — Stem 4° - 9° liigh. 

 Lowest leaves 8' -12' long. Rays 2' long. 



14. R. nitida, Nutt. Smooth and shining; stem tall, naked above; 

 leaves rigid, oblong-lanceolate, sliglitly tootlied or entire, 3-5ribbed; the 

 lowest long-petioled ; the upper partly clasping, small; rays large, drooping; 

 disk brown. — Borders of swampy tiiickets, Georgia, Florida, and westward. 

 July. — Stem S° - 5° high. Lowest leaves 4' - 6' long. 



§ 2. Achenia terete, striate: chaff of the receptacle deciduous. — Dracopis. 



1.'). R. amplexicaulis, Vahl. Annual, glabrous, branching, l°-3*' 

 high ; leaves olibuig, clasiiing; lieads terminal, showy ; .scales of the involucre 

 .small; ilisk cylindrical, brown; achenia small. — New Orleans (JJr. Il(de), 

 and w estward. 



54. LEPACHYS, Kaf. 



Scales of the involucre few ami small. Cliaff of the oblong or columnar 

 receptacle truncate and thickened at the apex. Aclienia tlattene<l and 

 margined. I'appus 2-toothed or none. Otherwise like Rudbcckia. — Peren- 

 nials. Leaves pinnately divided. Rays large, drooping, yellow. 



1. L. pinnata, Torr. & Gray. Rough with short appressed hairs; stem 

 sparingly l)ranched; divisions of the leaves 3 -7, lanceolate, acute, serrate or 

 entire ; disk yellowish, oval or oblong, shorter than the rays ; pappus ob- 

 scurely 2-toothed. — Dry soil, West Florida, Georgia, and westward. July- 

 Sept. — Stem 3° - 4° high. Rays 2' long. 



