EUPATORIUMS OF PERU. 71 
Sect. ITI. Exmrericata (DC.) Hoffm. (See Robinson, Proc. Am. 
Acad. liv. 303.) 
Key To SPEcIEs. 
a, Heads 3-10-flowered we 
b. Leaves pinnately ned ee ee 58. E. exserto-venosum,. 
b. Leaves 3—5-nerved Pais or somewhat above the base 
Branchlets and leaves glabrous; at pend Le: — teeth of 
the leaves widely spreading and v 
Petioles about mm. long; ieat-thede about 8 mm. 
WIG. . i). pei lies Wipe 59. E. chilca. 
 Betioles 8-10 mm. long; leaf-blade about 1.6 em. wide. 
60. E. affine. 
Branchlets and Sibi a or pubescent, sometimes 
and a ond cue eee PR eee 61. E. heptanthum, 
a. Heads 12 o-flowere 
c. Leaves iain but ths ‘blade etaduatty narrowed to a pet- 
iole-like base, thickish; involucral scales adel = tip, 
h-velvety ii. os) coud. seca : Commersonii. 
¢. i a wingless usually slender though pit en short 
i Daves entire, large; 8-10 cm. wide. i. cis aveeererwk: 62. E. uber. 
d. Leaves cre to serrate fae more than 6cm.wide e 
é. Teieee acute or acuminate at th 
f. Leaves 3-nerved from or somewhat above the base 
Heads oles 46m ee 3-4.5 em. long, on 
ee 
. Cuzcoesne. 
eat® lea-binde, ade: = cee eee pmb ee 64. E. tambillense . 
es nearly or quite glabrous towa 
petiole Bite puberulent and ee 
muriculate, at m ease 1 em. long; serra 
11-23 on each side 0 he leaf-blade. .65.. ve. stictophyllum. 
a pinnately vein \ 
n te; leaves mem- 
asasoan: Tinear, et ee 06. B, simulans, 
oppress: Peiapess narrowly oblong, a obtuse - 
rounded at tip; leaves coriaceous, Wi — 
s : hy aCes . E. fastigiatum. 
é. Leaves aac to cordate at base 4g. 
g. Leaves pinnately veined.........-.-2+02+20°° 27. E. endytum. 
g. Leavy ee ‘shee nerved from or somewhat above the 
h. Gils villous hispid-pubescent with widely 
spreading pr jointed hairs 1. 
t. Petioles rarely over 2 mm. long, about one- 
tenth the length of hae Teal-bade. ...,-,67. E. cutervense. 
t. Petioles 5-25 mm. lon ostly one-sixth 
Sebastes the | faut of ‘ie  jeat-blade ce 
