152 New Species of South American Plants 



neutral, 2-toothed. Disk-scales nearly equaling the flowers, 

 obovate, finely nerved, the summit abruptly contracted into a 

 narrow, rigid, purplish, serrulate acumination, seveial minute 

 teeth at either side of the otherwise rounded summit. Disk- 

 flowers 6 mm. long, the black akene about a fourth of the total 

 length, obovate, compressed, without pappus. Corolla 5- 

 toothed, the teeth ovate, acutish. Anther-cells acute at the 

 base. Style-branches elongated, recurved, acuminate. 



"Open ground, in dry water-courses, near the coast at 

 Playa Brava, April i. Form of leaf constant in a long series of 

 specimens." (Herbert H. Smith, Colombia, No. 516.) 



Wedelia heterophylla. 



Strongly strigose and very scabrous, the branchlets stout, 

 costate, very leafy, the internodes 5 to 7 cm. long. Petioles 

 2 to 3 cm. long, broad, margined, channelled and costate. 

 Blades 7 to 14 cm. long, 3 to 8 cm. broad, ovate, the very abruptly 

 acuminate rounded base tapering into the petiole, long-acumin- 

 ate and acute at the summit, coarsely and acutely serrate, thin, 

 dark-green, slendeily 3-nerved, the venation inconspicuous. 

 Outer involucre little exceeding the disk, of about 5 scales which 

 are broadly ovate, acuminate, gray-strigose, the inner scales 

 about equaling the disk, obovate with rounded, strongly ciliate 

 summit, strongly 3-nerved. Disk about i cm. long and a half 

 broader. Rays about twice the length of the outer involucre. 

 Disk-flowers about the length of their acutish scales, the ovary 

 half the length of the corolla, the pappus saucer-shaped, with 

 strongly lacerate margin. Akene 4 mm. long, the fimbriate 

 margin of its pappus erect, its margins strongly cartilaginous- 

 thickened, its sides sharply keeled. 



Species very near the next and possibly a variety of it, but 

 the almost hispid leaf surfaces, the smaller heads with short, 

 broad outer scales, and inner scales without the purplish acumi- 

 nation, indicate that it is distinct. Smith sends several col- 

 lections under the same number, which differ considerably. 

 One "from Bonda, July, is a shrub, 4 to 6 feet high," has the 

 leaves only about half the size described above, another has 

 them elongated-lanceolate. Of this Smith says "An erect 

 shrub, 2 feet high, collected near Cacagualito, 1600 feet, Nov- 

 ember 15." 



"Varies greatly in the form and pubescence of the leaves, 

 size of flowers and habit. It may be a low compact shrub or 

 sub-scandent to 6 or 7 feet. The rough stem and stiff curved 

 hairs on the veins seem characteristic. Generally there are 



