TROPICAL AMERICAN EUPATORIEAE \l 
Var. 8. asymmetrum, var. nov., fruticosum humile; foliis (etiam 
argute dentatis) saepius in latere uno acuminatim uniangulatis 
et in latere altero rotundatis; ramis et inflorescentia brunneo-villo- 
sis, pilis tenuibus patulis articulatis—E. ianthinum Hemsl. Biol. 
Cent.-Am. Bot. ii. 96 (1881), in part, i. e., as to pl. of Guatemala, 
not of Mexico.—GvaTEMALA: in cheirostemon forest, .Volean de 
Agua, alt. 2440 m., 1861, Salvin & Godman, no. 326 (K., phot. Gr.). 
This plant differs from the Mexican FE. ianthinum in having thinner, 
truly membranaceous sharply acuminate leaves, smaller (12-18- 
instead of 35-40-flowered) heads and considerably shorter and ap- 
parently less deeply colored corollas (about 3.6 mm. instead of 6.4 
mm. long. 
E. trinitense al Rusby & Robinson, comb. nov. Baccharis 
trinitensis Ktze. Rev. Gen. i. 319 (1891). Eupatorium Squiresii 
Rusby in Robinson, mitt Am. Acad. liv. 258 (1918). Prof. N. L. 
Britton has recently sent to the Gray Herbarium for study and 
identification the type-sheet of Dr. Otto Kuntze’s Baccharis trini- 
tensis, having observed that it appeared to be a Eupatorium rather 
than a Baccharis. At Cambridge it was quickly found to be identi- 
cal with the plant from the delta-region of the Orinoco Valley recently 
described as E. Squiresii When the source of the two types is con- 
sidered there are no phytogeographic grounds why they should not 
prove identical, indeed every reason to expect that a plant of Trinidad 
would subsequently be discovered on the delta of the Orinoco and 
vice versa. However, no blame can possibly attach to Dr. Rusby 
for overlooking the prior description of the species in this instance, 
since it had been placed by its German author in quite another 
tribe of the Compositae and in a genus most easily distinguished from 
- Eupatorium by its dioecious character. It is fortunate that the her- 
barium of Kuntze is now readily accessible at the New York Botani- 
cal Garden. Otherwise this blunder of his might long have remained 
uncorrected and his so-called Buccharis trinitensis, mistakenly de- 
scribed as dioecious, would have presented a puzzling problem. Dr. 
Rusby, who was first to describe the plant in its correct genus, has 
kindly consented to join the writer in transferring Kuntze’s earlier 
name to the proper position. During renewed study of the plant in 
question a previous collection of identical material has been brought 
to light as follows:* Trinidad, in Oroupouche Lagoon, 1865, Finlay, 
no. 2566 (Gr.). 
Mikania (§ Corymbosae) amblyolepis, spec. nov., volubilis 
-herbacea gracili; caule tereti minutissime grancloscpabenia 1-2 mm. 
