72 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
nounced distinct. These Chaparral samples differ, however, from the species 
described by Mr. Hemsley in several details, which are better seen in the new mate- 
rials which I succeeded later in obtaining from the same locality. 
The materials at hand enable me to show conclusively that the rubber tree of the 
lower part of Tolima is quite distinct from the S. verum growing at high altitudes. 
Perusing now the literature of the subject, I find that Prof. Henri Jumelle, of the 
Faculty of Sciences of Marseille, gave in 1903! an incomplete description of a Sapium 
tolimense Hort., which corresponds to our specimens as to the leaves, but shows again 
confusion as to the seeds, attributing to this species the smaller ones of S. verum. 
Nevertheless, Professor Jumelle is categorical in 
his opinion that S. tolimense is distinct from 8. 
verum: “Tl ne nous est cependant pas possible 
d’identifier, comme ena tendance Mr. Hemsley, 
le Sapium tolimense avec le S. verum.’’? The 
confusion of the seeds again prevents a clear recog- 
Fia. 77.—Male flower of Sapium tolimense, nition of the fact that the species grow at different 
a, Floral bud; b, open flower; c,stamens, ltitudes. It needs to be definitely understood 
All scale 6. that S. verum is an andine species of temperate 
and even cold climate (upper tierra templada 
and lower tierra fria), while S. tolimense belongs to the lower belt (upper tierra 
caliente) and to the lower part only of the middle one (lower tierra templada). 
In conclusion, the following description, drawn from the specimens sent by Mr. A. 
Rocha, is believed to show clearly that Sapium tolimense is not a synonym of Sapium 
verum, but the name of a legitimate and well-characterized species. 
EXPLANATION OF PLATES 42, 43.—From photographs taken by Pittier and Doyle at Cuesta de Tocotd, 
Cauca, Colombia. Pl. 43, natural size. 
Sapium tolimense Jumelle, Pl. Caoutch. ed 2. 151. 1903. 
Puate 44C. Figures 77, 78. 
, 
Sapium thomsoni Godefr. Leb.; Jumelle, loc. cit. 
A tree 20 to 30 meters high. Floriferous branchlets very thick. 
Leaves large, thick, glabrous. Petioles thick, 2 to 5 cm. long, broadly canaliculate, 
the petiolar glands short, rounded, and contiguous 
to the blade. Leaf blades 15 to 26 cm. long, 6 to y 
13 cm. broad, ovate, rounded at base, obtusely / 
rounded-acuminate, or rounded, or even emarginate, 2 
c 
but never acute at tip; margin more or less distinctly (42 
sinuate-toothed;? costa broad, prominent beneath; uf ff 
primary veins nearly perpendicular to the costa, 6 
prominent on both sides but more so underneath, 
strongly reticulate-anastomosed toward the margin. 
Stipules elliptic-ovate, up to 7 mm. long and 4 mm. 
broad, with a scarious, sinuate-denticulate margin. 
Floral spikes very thick, 20 to 25 cm. long, 
inserted at the base of the year’s new growth. 
Basal glands small (not over 5 mm. in diameter), orbiculate. Female flowers up 
to 10, inserted at base of spike; bract 2 mm. long and 4.5 mm. broad, scarious, 
rounded or broadly triangular, more or less lobulate and denticulate on the 
margin, accompanied on each side by several clublike, purple glandules about 1 
Fia. 78.—Female flower of Sapium toli- 
mense. a, Bracts; b, glandules; c, free 
divisions of perianth, All scale 6. 
1Jumelle, H. Les plantes 4 Caoutchouc et 4 Gutta. ed. 2. 151.1903. The citation 
in Engler’s Pflanzenreich (IV. 1474: 211) refers wrongly to the first (1898) edition of 
this work, in which the species is not mentioned. 
2 Doctor Jumelle’s description applies better to the young leaves of Mr. Wercklé’s 
specimens. It may refer to the leaves of seedlings, communicated by Mr. Godefroy- 
Lebeuf. ‘ 
