° EUPATORIUMS OF PERU. 65 
on the outer side), dull-green above, slightly paler beneath, sordid- 
pubescent on both surfaces, 5 em. long, 2.8-3.5 cm. wide; petiole 
slender, 2-2.5 cm. long; corymbs trifid, leafy-bracted at base, the 
bracts lanceolate, entire, petiolate; partial inflorescences rounded, 
rather dense, 24 em. in diameter, the branchlets and filiform pedicels 
(1-3 mm. long) densely covered with a short brownish-gray pubes- 
cence; heads 5-6 mm. high, about 10-flowered; involucral scales 
about 15, obtuse, brownish-stramineous, somewhat scarious, the outer 
short, ovate, loosely-pubescent, the intermediate elliptic-oblong, 
3-5-ribbed, slightly puberulent toward the tip; corollas about 4 mm. 
long, with slender proper tube 2 mm. long, slightly enlarged into a 
cylindric throat 1.7 mm. long; style-branches filiform, not clavate; 
achenes (very immature) 2 mm. long, grayish-pubescent; pappus- 
bristles about 30, delicate, white, distinctly shorter than the corolla.— 
Hieron. in Engl. Bot. Jahrb. xxxvi. 468 (1905).— CaJAMARCA: near 
Callacate, May, 1879, von Jelski, no. 670 (Berl., fragm. Gr.). 
45. URUBAMBENSE Robinson (p. 38). Perennial herb or 
perhaps shrub (the base unknown); stems (or branches) erect, terete, 
purple, covered with fine white crisped puberulence; internodes 1.5- 
(the upper)8—-11 cm. long; leaves opposite, ovate-lanceolate, gradu- 
ally narrowed from much below the middle to a mostly obtusish tip, 
crenate except toward the obtusish or rounded base (the teeth 0.7-1.5 
mm high, 3-4 mm. wide), 3-nerved from somewhat above the base 
(the lateral nerves quickly branching), thickish-membranaceous, 
dull-green, slightly rugulose and puberulent above, gray-tomentose 
beneath, 5-6.6 cm. long, 1.8-2.7 cm. wide; petiole 5-8 mm. long, 
slender except at the somewhat expanded base; corymbs trichoto- 
mous, leafy-bracted at the base (the bracts like the leaves only smaller, 
similarly crenate and petioled); partial inflorescences dense, rounded, 
cm. in diameter; heads about 10-flowered, about 8 mm. high, 
essentially sessile ; involucre subcylindric-campanulate; the scales 
about 3-seriate, rounded at the summit, the outer very short, 
the intermediate broadly elliptical, brownish-stramineous, mostly 
3-nerved and 4-costulate, somewhat margined, the innermost linear- 
oblong, slightly erose-ciliate at the blunt summit; corrollas 4.8 mm. 
long, slenderly tubular, perceptibly constricted just above the base 
ind sometimes slightly so just beneath the limb, glabrous; teeth 
lanceolate; Style-branches filiform, scarcely clavellate; anthers with 
long narrow apical appendage; achenes fuscous, 2.6 mm. long, taper- 
ne downward, upwardly villous on the nerves; pappus-bristles about 
28, lucid, yellowish-white, tapering, 4.3 mm. long, nearly smooth.— 
