TROPICAL AMERICAN EUPATORIEAE 59 
a slight acumination at point of insertion, 3.6—5 em. long, 1-2 em. 
wide, 3-nerved from the very base, membranaceous, green both sides, 
scarcely paler beneath, ciliolate on margin, also somewhat hairy on 
the nerves and chief veins on both surfaces, the hairs short, delicate, 
incurved; petioles 6-13 mm. long, pubescent; cymes terminal, trifid, 
the partial ones mostly 3-5-headed, sparingly puberulent (not glandu- 
lar); heads 24-30-flowered, short-pedicelled, 7 mm. high, 5 mm. 
thick; involucre campanulate, about 3-seriate; adie about 20, oval, 
ciliolate and the outer dorsally puberulent, with 3-5 green nerves 
and mostly 4 white ribs; receptacle convex, glabrous; corollas white, 
3 mm. long, with short proper tube and longer scarcely enlarged sub- 
cylindric throat; limb hispidulous; style-branches filiform-clavellate; 
achenes 1.6 mm. long, glabrous, black with lighter-colored angles; 
pappus-bristles about 22, white, delicate. 
La Paz: Prov. North La ae near Coroico, alt. 1100 m., 
Buchtien, nos. 429 (Gr., N. Y.), 3934 (N. Y.). 
Distributed as E. soratae Sch.-Bip., which, however, has much 
smaller (about 7-flowered) heads, mucronate and more stramineous 
involucral scales, as well as other points of difference. 
39. E. Fiebrigii Hieron. An herbaceous perennial about 6 dm. 
high; stem pale glaucous-green, when young densely viscid-glandu- 
lar, at length glabrate, branched, leafy to the inflorescence; inter- 
nodes as much as 7 cm. long; leaves opposite, petiolate, ovate, acu- 
tish or obtusish at the apex, rounded or subcordate at the base, 
crenate-serrate (teeth 4-10 on each side, mucronate, as much as 2 
mm. high and 5 mm. wide), membranaceous, glaucous-green, glandu- 
lar-puberulent on both surfaces especially along the nerves, the 
largest about 3.5 em. long and 2.5 cm. wide; petiole 5-10 mm. long, 
densely viscous-glandular; corymbs terminal, cymose, rather dense; 
heads 20-25-flowered; involucre campanulate; the scales 19-21, 
greenish-stramineous, scarious, with hyaline margin; the inner lance- 
linear, acutish, very finely ciliolate and often lilac-tinged toward the 
summit, glandulose on the back; the outer decreasing, scarcely wider, 
3—4-nerved; the outermost ovate, about 2.5 mm. long; corollas gla- 
brous, about 4 mm. long; tube cylindric, scarcely enlarged, yellowish- 
white; the limb lilac; style-branches lilac, scarcely thickened toward 
the summit; achenes (immature) 1.75 mm. long, dark-colored and 
glabrous on the faces, the angles yellowish-white and rough.—Hieron. 
in Engl. Bot. Jahrb. xl. 371 (1908) 
a Prov. Arce: in fields near Camacho, alt. 2700 m., Fiebrig, no. 
