GREENMAN. — NEW ANGIOSPERMS FROM MEXICO. 93 
VERNONIA VERNICOSA, Klatt, var. comosa. Stem striate, densely 
pubescent : leaves pubescent on both surfaces with subappressed-hirsute 
hairs, somewhat glabrate above: other characters of the species. —CosTa 
Rica. Buissons A Matambér prés Nicoya, January, 1900, Ad. Tonduz, 
no. 13,607 (hb. Gr., and hb. Inst. Phys.-Geog. Cost. Ri.). 
Eupatoriastrum, n. gen. of Composite (Ageratee). Heads homog- 
amous, many-flowered. Involucre campanulaté; bracts 2-3-seriate. 
Receptacle convex, chaff-bearing throughout. Corollas equal, regular, 
shallowly 5-toothed. Pappus of numerous minutely barbellate sete, 
disposed in a single row. Achenes linear-oblong, 5-angled. Leaves 
Opposite, petiolate, palmately nerved. Inflorescence in terminal leafy 
panicles. 
E. Nelsonii. Stem striate, slightly puberulent, somewhat stramineous 
in color: leaves petiolate, remote, broadly ovate, 1 to 2 dm. or more 
long, 4 to 16 cm. broad, 5—7-nerved from or just above the base, acute or 
short-acuminate, denticulate to shallowly dentate, rounded at the base, 
conspicuously netted-veined, sparingly pubescent with scattered crisp 
hirsutish hairs on both surfaces ; petioles 1 to 3 em. long: heads 1 to 1.5 
em. high, on axillary pedunculate and terminal clusters forming a leafy 
panicle: involucral scales lance-oblong, acute, externally pubescent: 
receptacle chaffy throughout with narrow pales slightly broadened toward 
the tip: corolla a little constricted above the slightly ampliated tube: 
pappus about equalling the corolla: achenes_ hirtellous-puberulent along 
the angles. —Mrxico. State of Oaxaca: Santa Efigenia, altitude 150 
m.,18 July, 1895, Z. W. Nelson, no. 2827 (hb. Gr., and hb. U. S. Nat. 
Mus.). 
In habit and in the character of the paleaceous receptacle this plant 
resembles Schistocarpha, but the style-branches are distinctly those of the 
subtribe Ageratee, and closely resemble the style-branches in Zupatortum 
near which genus it is provisionally placed. 
Stevia collodes. Shrub: ultimate branches reddish, puberulent: 
leaves linear, or linear-lanceolate, 1.5 to 8.5 cm. long, 1.5 to 3 mm. 
broad, obtuse, entire, glabrous on both surfaces: inflorescence terminat- 
ing the stems and branches in few-headed umbellate-cymes : heads about 
12 mm. high : involucral scales linear, 8 to 9 mm. long, acuminate, acute, 
obtusely keeled on the back and, as well as the leaves and young branches, 
glandular-viscid ; flowers much exceeding the involucre: pappus coroni- - 
form, consisting of minute scales : corolla white, or slightly reddish-tinged, 
with a long slender glandular tube, and a rather deeply 5-lobed limb : 
achenes about 4 mm. long, slightly puberulent along the angles. — 
