New Species of South American Plants 153 



little tufts of fine hairs in the axils of the veins." (Herbert 

 H. Smith, Colombia, No. 515.) 

 Wedelia symmetrica. 



Harshly strigose throughout, the hairs short and stout. 

 Branchlets stout, coarsely and irregularly costate, the inter- 

 nodes 5 to 7 cm. long, all the leaves opposite. Petioles 10 to 

 15 mm. long, stout, channelled, long-pilose toward the base, 

 the blades 7 to 10 cm. long, 2.5 to 5 cm. broad, lanceolate to 

 ovate, the base more or less produced, the summit more or less, 

 mostly long-, acuminate, acute, the margin serrate with small, 

 sharp, erect teeth; thickish, dark green, lightly scabrous, 3- 

 nerved, the lateral pair starting from near the base of the mid- 

 rib, the other secondaries strongly falcate, the venation little 

 prominent. Heads slenderly peduncled, erect, the disk 12 to 

 15 mm. broad and high, the rays exceeding it by nearly its own 

 length. Outer involucral scales 4, unequal, some longer, some 

 shorter than the rays, foliaceous, lanceolate, acuminate, the 

 inner averaging about half as long, brown, thickish and rigid, 

 not strigose, nerved, truncate, shortly 3-toothed. Receptacle 

 slightly convex. Ray akenes 4 to 5 mm. long, 2.5 to 3 mm. 

 broad, obovoid, the summit broadly and shallowly emarginate, 

 compressed, lightly strigose, nerved and slightly tuberculate, 

 the margin cartilaginous-thickened, light-colored. Pappus 

 consisting of a flat disk with fimbriate spreading margin on a 

 stout peduncle about half of its breadth. Ray corollas with 

 tube nearly as long as the ovary and slightly broader upward, 

 the limb oblanceolate, 3-toothed, the teeth lance-ovate, acumi- 

 nate. Branches of the style filiform, exserted, about as long as 

 the tube. Disk-flowers about 8 mm. long, the terete pilose 

 ovary about a fourth of the total length, the corolla infundi- 

 bular, slightly and equally broadened above, finely many- 

 nerved,' the ovate obtuse lobes nearly a third, of the total length. 

 Anthers black, half as long as the corolla, the basal auricles short, 

 obtusish. Style-branches long exserted, recurved, long-pilose, 

 acute. 



"AtCinto on the north coast, March 22." (Herbert H. 

 Smith, Colombia, No. I975-) 

 Melanthera longipes. 



Harshly strigose. Branchlets slender, weak and crooked, 

 sulcate, the internodes about i dm. long. Petioles 2 to 4 cm. 

 long, slender, channelled, striate, the blades very thin, bright- 

 green, 7 to 10 cm. long, 4 to 7 cm. broad, ovate, the base sub- 

 truncate, but slightly produced into the petiole, the summit 

 abruptly acuminate and acute, the margin coarsely crenate- 

 dentate, the slender, coarsely reticulate venation conspicuous, 

 sub-tri-nerved. Heads few, shortly and slenderly peduncled. 



