TROPICAL AMERICAN EUPATORIEAE 57 
finds the heads about 25-flowered and in the narrow-leaved form, 
later collected by Dr. Kuntze, 21-flowered. In the nearly related 
E. amygdalinum Lam., rather common and widely distributed from 
Central America to Brazil, the heads examined have been 31-39- 
flowered. 
33. E. gynoxymorphum Rusby (p. 7). Small tree 4-6 m. 
high; branches terete, grayish-buff, minutely scurfy, curved-ascending; 
leaves opposite, petiolate, ovate-oblong, subacuminate to an obtusish 
tip, acute or acutish at base, obscurely undulate, somewhat cori- 
aceous, pinnate-veined (chief veins about 4-6 pairs), glandular- 
punctate, above green and glabrous, beneath distinctly paler, grayish 
green, minutely scurfy and along the midrib bearing traces of a tawny 
tomentum; leaf-blade 10-12 cm. long, half as wide; petiole 2.5-3.5 
em. long, subtomentellous; corymbs terminal, many-headed, flat- 
topped, 10-18 cm. in diameter, leafy-bracted at base; pedicels 7-12 
mm. long; heads erect, about 35-flowered, about 7 mm. high and 6 
mm. in diameter; involucre campanulate, about 3-seriate, the scales 
about 23, lanceolate, acute, scurfy, nerveless; corollas 4.5 mm. long, 
scarcely enlarged upward, obsoletely hispidulous toward the light 
red or purplish limb; achenes 2.3 mm. long, obscurely roughened on 
the ‘angles; pappus-bristles about 18, dull yellowish-white, nearly 
~ smooth.—E. gynoxioides Rusby, Bull. N. Y. Bot. Gard. iv. 380 
(1907), not E. gynoxoides Wedd. 
La Paz: Pelechuco, alt. 2135-2440 m., Pearce (K.); Prov. North Yungas, 
4 Coripati, in leaf-mould of wet forest, Bang, no. 2194 (Gr., N. 2 Us es 
ope, Cruz: May, 1892, Kuntze (N. Y.) 
34. E. thymifolium Britton. Slender, erect, herbaceous or 
nearly so; stems terete, 2-3 mm. thick, 7-8 dm. high, finely pubes- 
cent, brownish; branches mostly short, ascending, leafy; leaves 
small, opposite, short-petioled, ovate, obtuse, shortly cuneate at the 
base, entire or obsoletely crenate-undulate, above green and glandu- 
lar-puberulent, beneath paler, punctate, and pubescent chiefly on 
the veins, 1-1.5 cm. long, half as wide; corymb terminal, fastigiately 
branched, few-headed; pedicels 1.5-2.5 cm. long, puberulent; heads 
apparently about 25-flowered, 8-9 mm. high, almost equally thick; 
involucre broadly campanulate, the scales about 15, obtuse, the inner 
narrowly oblong, substramineous, the outer progressively shorter, 
ovate- or oblanceolate-oblong, herbaceous, puberulent; corollas with 
short slender proper tube (1 mm. long), distinctly enlarged campanu- 
late-cylindric throat (3 mm. long) and ovate-oblong teeth (nearly 
