COMPOSITE. 629 



WEDELIA, Jacq. 



Heads many-flowered, radiate. Flowers of tlie ray pistillate, of the disk 

 perfect, tubular, 5-toothed. Scales of the involucre in "2 -3 rows, the outer 

 ones leafy, the inner ones membranaceous. Receptacle convex, chaffy. 

 Achenia obovate or compressed. Pappus calyx-like, composed of united 

 dentate and ciliate scales. — Herbs or undershrubs, with opposite serrate 

 leaves, and mostly solitary yellow flowers. 



W. carnosa, Rich. Herbaceous, smooth, creeping ; leaves sessile, thick, 

 obovate, slightly 3-lobed ; heads axillary, peduncled ; outer scales of the in- 

 volucre oblong, as long as the disk, the inner ones smaller ; achenia wingless. 



— Springy places, Key Biscayne {Curliss). 



DRACOPIS, Cass. 



Scales of the involucre very small, the inner row linear, mucronate. 

 Achenia terete, finely striate and glandular. Pappus none. Otherwise like 

 Rudbeckia. 



D. amplexieaulis, Cass. — New Orleans {Dr. Hale), and westward. — 

 Annual, smooth, branching, l°-3°high; leaves oblong, mostly serrate, 

 clasping ; heads terminating the peduncle-like branches ; rays yellow ; disk 

 brown. 



RUDBECKIA, L. 



R. rupestris, Chickering. Stem and leaves sparingly hairy ; lower stem- 

 leaves 3-parted, with deep rounded sinuses, the lateral lobes spreading; heads 

 large (f wide), globular; rays 10-13, orange-yellow ; otherwise like R. tri- 

 loba. — Rocky slopes of Little Roan Mountain, North Carolina {Prof. J. W. 

 Chickering). 



R. bupleuroides, Shuttlw. Smooth throughout ; stem sometimes flexu- 

 nus below ; leaves broadly linear, 3-nerved, entire, the lowest ones tapering 

 into a more or less elongated petiole, the upper ones distant, short, linear- 

 subulate ; heads long-peduncled, globose ; rays yellow, longer than the diirk- 

 brown disk ; achenia slightly curved ; pappus cup-shaped. (R. Mohrii, Gray.) 



— Wet pine barrens, St. Mark's and Tola, Florida {Ruijel, Mohr). — Stem 2°- 

 3° high. Lower leaves 6'- 12' long. 



HELIANTHUS, L. 



H. Floridanus, Gray. Stem tall (4° -6° high), smooth; leaves lanceo- 

 late or ovate-lanceolate, acute at both ends, sparingly denticulate, short-peti- 

 oled (2' -4' long) ; involucre smooth, the leaves lanceolate, acuminate; disk 

 dark purple ; rays long, oblong. — East Florida (Palmer, Garber). 



H. cinereus, Torr. & Gray. Rough with rigid white hairs ; stem simple ; 

 leaves ovate-lanceolate, slightly serrate, nearly sessile, paler beneath, the 

 upper ones small and distant; heads 1-3 at the summit of the stem, short- 

 peduncled ; scales of the involucre ovate-lanceolate, canescent. — Mountains 

 of Georgia, and westward. September. — Stem 2° -3° high. Leaves 3'- 

 5' long. 



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