356 JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES’ VOL. 13, No. 15 
Type in the U. 8S. National Herbarium, no. 1,140,920, collected in the forest 
along the Rfo Santa Rita, near Salento, Department of Caldas, Colombia, 
altitude 1,600 to 1,800 meters, August 26, 1922, by E. P. Killip and T. E. 
Hazen (no. 10121). 
Killip & Hazen no. 9007, collected at essentially the same locality, is also of 
this species. 
Pilea hazeni clearly should be placed in the section Heterophyllae, though it 
differs greatly from any of the described species of that group. 
Pilea puracensis Killip, sp. nov. 
Erect herbs, 30 to 40 em. high, glabrous throughout. Stipules triangular- 
ovate, 3mm. long. Petioles angulate, those of a pair unequal, the longer 3.5 
to 5 em. long, the shorter 2.5 to 4.5 em. long. Leaf blades elliptic or elliptic- 
lanceolate, 10 to 15 cm. long, 3.5 to 6.5 cm. wide, acuminate at apex, rounded 
or subauriculate at base, closely crenate-serrulate to base (serrulations about 
1 mm. long), 3-nerved to apex, penniveined along nerves, faintly covered on 
both surfaces with punctiform and linear cystoliths. Staminate inflorescence 
subdichotomously branched, 3 to 6 em. long, the flowers borne in few- 
flowered clusters at the ends of the branches. Pistillate inflorescence of 
sessile, paniculately branched cymes, much shorter than the petioles; perianth- 
segments unequal, the middle oblong, 0.7 mm. long, the lateral orbicular, 0.2 
mm. long; achenes ovate, 1 mm. long. 
Type in the U. S National Herbarium, no. 1,140,081, collected in the forest 
at “Canaan,” on the slopes of Mt. Puracé, Department of El Cauca, Colombia, 
altitude 3,100 to 3,300 meters, June 13, 1922, by F. W. Pennell and E. P. 
Killip (no. 6673). 
Closely related to P. pteropodon Wedd., this species is distinguished by 
smaller leaves and smaller pistillate heads, and by the fact that its leaves do 
not taper into winged petioles. The foliage and general aspect of the plant 
suggest P. quichensis Donn. Smith, of Guatemala, but the staminate in- 
florescence is much longer and the leaves are more finely toothed. 
Pilea ornatifolia Killip, sp. nov. 
Plants dioecious, glabrous throughout, erect or decumbent, the branches 
lax. Stem succulent, geniculate at the middle of the internodes, reddish 
brown, without cystoliths. Stipules ovate, 2 mm. long. Leaf blades ovate, 
acute at apex, obliquely cordate at base, sharply serrate from base to apex, 
3-nerved, (lateral nerves reaching the apex), dark green with punctiform cysto- 
liths above, paler with conspicuous linear cystoliths beneath, penni-veined 
along each nerve, the veins black; leaves of a pair similar but unequal, the 
larger 4.5 to 5.5 em. long, 1.5 to 2.5 em. broad, their petioles 1 to 1.5 cm. long, 
the smaller 2.5 to 3.5 em. long, 1 to 1.5 em. broad, their petioles 2 to 3 mm. long. 
Staminate heads globose, about 6 mm. in diameter, densely flowered, borne on 
slender peduncles 2 to 2.5 em. long; perianth violet-tinged, its lobes 0.6 mm. 
long. Pistillate heads 4 to 8-flowered, in short axillary cymes, borne on 
peduncles 4 mm. long; perianth segments subequal, about 1.2 mm. long; 
achenes broadly ovate, 1.5 mm. long. 
Type in the U. 8. National Herbarium, no. 1,140,933, collected in an open 
gulch in the forest on Cerro Tatamdé, Department of Caldas, Colombia, alti- 
tude 3,200 to 3,400 meters, September 8 to 10, 1922, by F. W. Pennell (no. 
10476). 
