COLOMBIAN EUPATORIUMS. 281 
Widely distributed in the warmer parts of America, common and 
variable. The numerous varieties founded on leaf-contour, pubes- 
cence, flower-color, odor, etc., appear to have no more than formal 
value, since they rest upon arbitrarily selected combinations of charac- 
ters subject to independent variation. The only variety definitely 
reported from Colombia is the following, which to a considerable 
extent bridges the gap between this species and E. barranguillense. 
Var. pauciflorum Hieron. Heads more slender, 10-16-flowered; 
involucre 1 cm. long, the scales pale, the intermediate and inner ones 
tending to be acute; corollas pale violet or lilac.— Hieron. in Engl. 
Bot. Jahrb. xxviii. 564 (1901), as pauciflora. 
Bottvar: Cartagena, Billberg, acc. to Hieron. 1. ¢. 
MAGpaLeNa: near Santa Marta, H. H. Smith, alt. 153 m., no. 1991 (Gr., 
i D.). 
[Venezuela, acc. to Hieron. 1. ¢.] 
- E.corymbosum Aubl. Erect much branched shrub, 1-3 m. 
high; stems terete, finely tomentellous, the hairs curved, some of 
them gland-tipped; leaves opposite, petiolate, deltoid, 1.7-6 em. 
long, nearly or quite as broad, obtuse or acute, coarsely crenate- 
toothed except at the widely and shallowly cordate or subtruncate 
base, yellow-green, puberulent or smooth above, paler and finely 
nt on the nerves and veins beneath; petiole 1-2 em. long; 
1s in dense flattish compound corymbs; scales many-ranked, 
closely appressed, their 3-5 nerves tending to spread slightly as they 
ch the green rounded tips.— Guian. ii. 799 (1775). E. atriplici- 
folium Lam. Encyc. ii. 407 (1786); Vahl, Symb. iii. 96 (1794); Hieron. 
m Engl. Bot. Jahrb. xxviii. 567 (1901); Urb. Symb. Ant. iv. 623 
(1911). E. repandum Willd. Spec. iii. 1767 (1804); Griseb. Fl. Brit. 
W. Ind. 358 (1861). Osmia repanda (Willd.) Sch. Bip. Pollichia, 
XXl.-xxiv. 252 (1866). 
i gi near the city so named, alt. 500 m., Lehmann, no. 7996, acc. to 
- 
ee. 
: hae from the Bahamas to Guadaloupe; French Guiana, acc. to 
No specimens of this species have been seen from the continent, 
t it is here included on the basis of the Colombian report by Hier- 
onymus, 1. ¢, 
Sect. Il. Supmerrcata (DC.) Hoffm. Involucre campanulate 
pes mate, rarely cylindric, seldom more than twice as long as thick; 
