ROBINSON, — SPERMATOPHYTES OF MEXICO. 479 
Evupatorium Lemmont, Robinson, Proc. Am. Acad. xxvii. 171 
(1892). Add syn. H. euonymifolium, Greene, Pittonia, iii, 31 (1896), 
founded upon a co-type. 
Eupatorium Gonzalezii. Apparently herbaceous and to the unas- 
sisted vision glabrous throughout; stems terete, green, finely striate, 
lucid, purple at the nodes, slender; the younger parts microscopically 
puberulent: leaves opposite, long-petioled, deltoid-ovate, obtuse, coarsely 
crenate-dentate, 3-nerved from the entire abruptly acuminate base, thin, 
bright green and glabrous upon both surfaces, 4.5 to 7 cm. long, 4 to 
4.5 cm. broad ; petioles slender, 8 em. long ; the uppermost leaves ovate- 
lanceolate, entire, shorter-petioled: heads numerous, about 18-flowered, 
small, in compound axillary and terminal cymes; peduncles and pedicels 
ascending, obscurely puberulent; bracts spatulate and mucronate to 
linear and acute, small; involucral scales green, striate, narrow, linear, 
obtuse at the scarious erose and often crumpled apex, a few of the outer 
considerably shorter, ovate, acuminate, ciliolate: corollas white, glabrous 
throughout, the greenish white proper tube somewhat exceeded by the 
pure white throat and spreading limb: achene dark, 1.3 mm. long, up- 
wardly hispid on the angles; pappus pure white, sparse; the bristles 
essentially equal, nearly as long as the corolla, slightly connate into a 
minute cup at the base. — Collected by Professors C. Conzatti and 
V. Gonzdlez at El Fortin, Oaxaca, altitude 1,600 m., March, 1897, 
no. 387, 
EKupatorium leonense. Stem 4 mm. in diameter, slightly lignes- 
cent, pithy, yellowish brown, glabrate; branches opposite, curved-as- 
cending, striate, tomentulose, finely pubescent: leaves opposite, ovate to 
deltoid-ovate, long-petioled, thin, coarsely and rather bluntly few-toothed, 
acutish, abruptly contracted at the entire base to an acuminate attach- 
ment to the long petiole, finely pubescent when young, nearly or quite 
glabrate at maturity, 3 to 5 em. long, nearly as broad, 3-nerved from a 
little above the base ; petioles 3 to 4 em. long, pubescent: pedicels 
slender, flexuous, green, puberulent; bracts minute, subulate ; heads 
rather few in a small round-topped panicle, medium-sized, 8 mm. long, 
about 12-flowered ; involucre campanulate, loosely imbricated, lance- 
linear, attenuate, very acute, green, striate, thin, sparingly white-pubes- 
cent, the outer much shorter: corolla narrowly cylindrical, of essentially 
uniform diameter throughout its length and without clearly marked 
throat or proper tube, glabrous: style-branches strongly clavate, yellow ; 
achenes black, glabrous, lucid, 2 mm, long with conspicuous yellow cal- 
losity at the base; pappus white, equalling the corolla. — Collected by 
