TROPICAL AMERICAN EUPATORIEAE 43 
the outermost ovate, dorsally tomentose, the others nearly smooth 
on the back, often with a conspicuous at length fuscous discoloration 
toward the tip, or at least with a greenish area from the broadened 
summit of the nerves; corollas supposed to be violet or bluish- 
purple, glabrous, 6 mm. long, slightly and gradually enlarged up- 
ward; achenes slender, tapering downward, 5.2 mm. long, the faces 
nearly black, glabrous, the angles pale, upwardly hispid; pappus- 
bristles dull-white, scabrid, unequal, scarcely or not at all thickened 
toward the summit.—Proc. Am. Acad. lv. 22 (1919). E. Clematitis, 
var. tomentosum Sch.-Bip. Bull. Soc. Bot. Fr. xii. 81 (1865), without 
char.,& Linnaea, xxxiv. 535 (1865-66), as Clematidis var. tomentosa a 
also without char. E. conyzoides, var. incanum Britton, Bull. Tor. < 
Bot. Club, xviii 333 (1891), and probably of Bak. in Mart. Fl. Bras. 
vi. pt. 2, 278 (1876). 
La +: Prov. Larecaja: ‘Viciniis Sorata; inter Munaypata et rivum 
Chalassayo, in schistosis. Reg. temp. 2,600-2, m.,”’ Mandon, no. 249 
(Gr., N. Y.); Sorata, alt. 2440 m., Rusby, no. 1626 (N. Y.); Prov. Yungas, 
alt. 1220 m., Rusby, no. 1625 (N. Y., U.8.). 
Var. ? aporum Robinson. Leaves lance-ovate, gradually acumi- 
nate, rounded at base, rather densely puberulent above, paler and 
grayish-tomentellous beneath, the cauline as much as 5.2 em. long 
and 2.4 cm. wide; petiole nearly 1 cm. long; inflorescence, heads, 
florets, etc., as in the typical variety —Proc. Am. Acad. lv. 23 (1919). 
Bouivia WITHOUT LocaLiTy: Bang, no. 2875 (Gr., U. 8., Mo.). 

Sect. II. Supimprrcata (DC) Hoffm. in Engl. & Prantl. Nat. 
Pflanzenf. iv. Abt. 5, 140 (1890); Robinson, Proc. Am. Acad. liv. 
281 (1918). 
Key TO SPECIES. 
Hee eee es ee : : 
c. Leaves simple, broader, 3-10 mm. wide; seal et at tip 
b. Leaves lanceolate, ovate or oblong, rarely obovate d. 
d ah 2 7 1 ra} , 7 = 4 

‘ panicle.15. E.crenulatum. 
d. Heads sessile or nearly so in fascicles, these disposed in an oO 
pen 
panicle e. 
e. Leaves oblong-spatulate or-oblanceolate, obtuse or rounded at 
ti prin heeloined soo oan es a eee es ss 16. E. dentatum. 
inoid 
e. Leaves ovate, acuminate, 3-nerved from near base.17. E. iresinoides. 
d. Heads in a dense ovoid thyrse or thyrsoi nicle. .18. EF. morifolium. 
d. Heads in corymbs or more rarely scattered (and slender-pedicelled) 
in open leafy-bracted panicles f. 
