270 ROBINSON. 
Sect. I. CyninprocepHaLa DC. Heads cylindrical (2—)3-5 times 
as long as thick, 5-75-flowered; scales many-seried, regularly gradu- 
ated, closely imbricated, concave, firmish in texture, often promptly 
deciduous, usually pale or stramineous except at the mostly darker 
often subherbaceous generally obtuse or rounded tip. Receptacle 
small, flat or nearly so, glabrous.— Prod. v. 141 (1836). Eupatorium 
ser. Imbricata DC. 1. c. in part. Eupatorium sect. Imbricata (DC.) 
Hoffm. in Engl. & Prantl, N at. Pflanzenf. “a ca 5, 139 (1890). 
Osmia Sch. Bip. Pollichia, xxii—xxiv. 250 (1866). Hupatortum sect. 
Osmia (Sch. Bip.) Benth. ex Bak. in Mart. mE Bras. vi. pt. 2, 275 
(1876).— Chiefly shrubby plants of warm climates. 
Key To SpEcIEs. 
a. Leaves cordate, sessile or nearly so, deflexed, somewhat rigid, 
TUR BU 6 oe ice ees gh a1 4 ohicks vawerete tt 1. E. bullatum. 
a. Leaves peti late or cuneately poured 2 a subsessile base b. 
b. hae sulcate-angulate, g 
s in dense flattish or ney convex corymbs d. 
gry ‘Se ales of the involucre oblong, rounded or subtruncate 
or even io retuse at the chuvtieh-siaryit ed apex; 
eir nerves straight or even nie A eeeue at the 
tip; leaves lanceolate, long-acumin 
e. Heads thickish-eylindric to peeconeead a 
dre, 45-7i-flowered 2... Sci 2. E. pellium. 
Heads slender. eyhindiic, about 20-flowered. ...3. E. Moriizianum. 
d. "Beales ovate-oblong, sli ghtly thickened and with nerves 
somewhat nba vergent toward the tip; leaves ovate, 
: 
never long-acuminate. ... 2.055.202. es 4. E. laevigatum. 
c. Heads in an elongated loose opposite-branched leafy- 
bracted panicle 
f. Leaves coarsely pellucid-punctate; veinlets scarcely é : 
at all —— heads about 26-flow ered....5. E. chrysostictum. 
f. Leaves not punctati veinlets forming a ee 
network; heads about 12-flowered........ E. diaphanophlebium. 
b. —— Nine ent or 2s spear (smoothish and cabeictially 
ere SCA q. 
g. Seales (pale in color) provided at tip with a small but 
conspicuous lance-linear subherbaceous spreading “a 
Wena appending is Pe kee oe 
Scales sometimes changed in texture toward the tip bi, 
in no case ing a narrow appendage h. 
h. Leaves (ovate, never at all rhombic or_hastate) 
E. uromeres. 
bn 
m abruptly short-acuminate on one or both sides 
eg ‘the | insertion from an stalin rounded base) 7. 
ll tip. .8. E.columbianum. 
i Scales 
ginbrows OOLY Oat the 
j. Leaves cast ath acute or acutish, tomentose be- 
neath, about 2 cm. long; petioles about . mm eee ee 
long os hypericifolium. 

4 
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