250 COMPOSITE. (COMPOSITE FAMILY.) 



11. R. laciuiata, L. Stem smooth, tall (4-6), branching; leaves 

 rough ; the lowest piunately divided, the divisions lanceolate or oblong, lobed 

 or pinuatifid ; the middle ones 3 - 5-parted ; the uppermost ofteu undivided, 

 toothed ; disk yellowish, ovate or conical ; rays large, drooping ; chaff of the 

 receptacle truncate, pubescent at the apex, about as long as the 3-angled 

 achenia. Swamps, Florida, and northward. July - August. Leaves large. 

 Kays l'-2' long. 



Var. humilis, Gray ? Stem 2 - 4 high, corymbosely branched ; lowest 

 leaves mostly entire, round-cordate ; stem leaves 3 - 5-lobed ; disk globose. 

 River banks along the mountains of Georgia. August. 



12. R. heterophylla, Torr. & Gray. Pubescent; stem corymbose 

 above ; leaves coarsely serrate, rough above, tomeutose beneath ; the lowest 

 orbicular-cordate or 3 - 5-parted, on long petioles ; the middle ones 3-lobed ; 

 the uppermost ovate, sessile and entire ; disk globose, yellowish ; rays droop- 

 ing ; chaff of the receptacle acute ; acheuia 3-sided. Swamps, Middle Flor- 

 ida. August. Stem 3 -4 high. Leaves and heads much smaller than in 

 the preceding. 



* * Disk columnar, elongated : stems tall, simple. 



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

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

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

 Wet pine barrens, West Florida, and westward. August. Stem 4 - 9 high. 

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



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

 leaves rigid, oblong-lanceolate, slightly toothed or entire, 3-5-ribbed; the 

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

 disk brown. Borders of swampy thickets, Georgia, Florida, and westward. 

 July. Stem 3 - 5 high. Lowest leaves 4' - 6' long. 



2. Achenia terete, striate : chajfofthe receptacle deciduous. DRACOPIS. 



15. R,. amplexicaulis, Vahl. Annual, glabrous, branching, l-3 

 high; leaves oblong, clasping ; heads terminal, showy ; scales of the involucre 

 small; disk cylindrical, brown; achenia small. New Orleans (Dr. Hale), 

 and westward. 



54. LEPACHYS, Raf. 



Scales of the involucre few and small. Chaff of the oblong or columnar 

 receptacle truncate and thickened at the apex. Achenia flattened and 

 margined. Pappus 2-toothed or none. Otherwise like Kudbeckia. Peren- 

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



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

 sparingly branched; 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. 



