ROBINSON. — STUDIES IN THE EUPATORIEAR. 47 
which is still extant in the herbarium of the Linnean Society of 
London. It is a Colombian plant, apparently perennial, with deltoid- 
ovate, strongly cordate leaves and contracted inflorescence, the pedicels 
being very short. It is not yet certain whether this plant has received 
a later name, but it is pretty close to EH. ballotaefolium HBK. and of 
course has nothing whatever to do with the Z. urticifolium of the 
Flora Brasiliensis or of recent writers on the flora of Argentina and 
Paraguay. 
Mixanta Baprert DC. Prod. v. 194 (1896). This excellent species 
is well marked by its coriaceous glabrous essentially entire leaves, 
which are rather abruptly acuminate, ending in a caudate and often 
falcate tip. The petioles are furthermore much flattened and rather 
broad. he species, notwithstanding these distinctive characters, has 
been reduced by Grisebach (Veg. Karaib. 85) to M. latifolia J. E. 
Smith (Rees, Cyclop. xxiii. n. 8). Grisebach also implies that it is 
suspiciously close to MZ. amara Willd. However, the inflorescences in 
M. Badieri ave pyramidal panicles in which the heads are subspicately 
arranged, while both in M. amara Willd. and in M. latifolia J. E. 
Smith (ex char.) the heads are borne in corymbs. In the herbarium 
of Lamarck there is a sheet of J. Badieri labelled in the hand of 
Lamarck himself “Eupatorium vincaefolium Lam. dict. no. 39 de 
Mr. Badier de la guadeloupe No 137.” At first sight it would appear 
that this was an authentic type of Z. vincaefolium Lam. and that his 
earlier specific name should take the place of DeCandolle’s later 
Badieri. However, Lamarck did not cite the plant of Badier in his 
Dictionary, but on the other hand distinctly states that his £. vincae- 
folium was founded on South American material. Indeed, most of 
the characters are evidently drawn from Aublet’s plate and description 
of E. parviflorum, which Lamarck reduces to a synonym of his own 
species. Although Badier’s plant of Guadeloupe possesses some hab- 
ital similarity to the South American one, the latter lacks the broad 
petioles and the peculiar acumination and is doubtless a 
species. Obviously, it is to the South American plant that Lamarck’s 
name £. vincaefolium was appli 
Mikania Houstoniana, n. comb. Eupatorium Houstonianum 
Spec. ii. 836 (1753). £. Houstonis L. Syst. ed. 10, 1204 (1759). 
E. fruticosum Mill. Dict. ed. 8, no. 6 (1768). Mikania Houstonis Willd. 
Spee. iii. 1742 (1804). The rule of priority of the specific name requires 
the restoration of the earlier adjectival form. ie 
BRICKELLIA ATRACTYLOIDES Gray, Proc. Am. Acad. vil. 290 (1870). 
Of this species, Colcosanthus venulosus A. Nelson, Bot. Gaz. xxxvil. 262 
(1904), is an exact synonym. 
