COLOMBIAN EUPATORIUMS. 283 
the nerves and principal veins beneath, entire 
from the base nearly or quite to the middle 
0. E. arcuans. 
l, Leav membranaceous, sa, oeiy s 
toothed from much below the middle 
Be 
wide; petiole — pe — Br E. ‘Vargasianum. 
: es 
n. His pibonbeaseat igor "of — 
POUTAOE OS ire ee oc ce ee E. smilacinum. 
n. Pubeascnt: when present fine and Hee 0. 
0. a suborbicular-ovate, 5-8 cm. 
ss ute Aaa ye eat gee ey ae 33. EH. acuminatum. 
0. fae lance-ovate, 2-4 cm. wide 
34, E. pseudoglomeratum. 
k, Leaves rhombic-ovate or -lanceolate, cuneately 
decurrent on short petioles or narrowed. to a 
mibeeasile hake... . . oo sa ees .35. E. inulaefolium. 
thyrse 
D: Petioles at least 1 cm. long 
q. Leaves a, serr. ae a teeth 2-3 mm. 
igh; petioles 2-4 cm. long............ 36. EH. morifolium. 
q. Leaves finely ——s eee 0.5-0.8 mm. guieh, 
petioles 1-1.5:cem. long.............:. E. thyrsigerum. 
. Leav hie sessile or Tealy me SVetiee et see oe \38. E. densum. 
b. He was numer 
usly (20- d 
r. any ves 5) aarve d from or ceniutae above the bases. 
Pp eolectal scales 2-3 ped =— 3-8 mm. high ft. : 
Leaves lanceolate, small (2- wade). 65 8 39. E. miserum. 
t pai es ovate (or in the glan dular-pabesent = pere- 
ztoides ovate-elliptical), 1 cm. or more wi 
u. Weak ann eads numerous, eivall a mm: 
high), _Separate on filiform pedicels in an open 
ee eee i ee pe CG . E.microstemon. 
mall canis 
dense evs, vhs eo and disposed in a 
corymb 
Heads go 25flowered Ww. 
w. Hea 5.5 m a ee in rather dense 
tale he 
es 
x. Florets Tc-etihoted or arden achenes 
hispid at least on the angles; perennial 
Wt rae es Th. E. pycnocephalum. 
x. Florets white; achenes glabrous; rusty- : 
pubescent herb or ch ee 42. E. Klaitianum. 
w. Heads about 7 mm. high, in somewhat looser 
cymes; florets white os = E. Pennellii. 
». Heads 35-70-flowered, 7-8 mm. high; fi 
Toseate or lilac; leaves ovate-lanceolate, cial 
punctate, ts aia te ara E. ’ obscurifolium. 
u. eel herb; heads rather few in a lax “Giffuse 
Perenn pedicels 1-2 em. lo OMS oS eae E. perezioides, 
u. renal hes herb or shrub, smoothish, viscid about 
odes and petioles; leaves slightly succulent, 
c— 
