50 ROBINSON. 
zt. Leaves velvety-puberulent to ee beneath. 

aves entire, rounded at base............ 40. E. secures 
aves crenate-dentate, cordate at base....... 24. glomeratum, 
i. Leaves —— beneath 
j m. long or 
Leaves broadly 0 ovate, ‘an “Shintiad or cordate at 
MO DAB. uns eon gh eee eee 
Leaves ovate-lanceolate to elliptical, thickish, acute 
a 
Heads ——<- on the flexuous ascending branches 
mple racemose panicle; leaves elliptical, 
reticulated on both surfaces............ 42. E. 
E. acuminatum. 
crenulatum, 
es ili 
te; leaves dull above, 1.5-2'3 cm. wide. .34. E. drepanoides. 
Tevnbuernd —- sinter and obseurely ciliolate; 
eaves above, om. Wide... - 275 
> nied small, se than 1 em. in dinmitees broadly 
ate, obova te, or suioceenias shed ee 
h. Heads 8-12: flowe red k. 
k. Leaves lanceolate, wes - or suborbicular, obtuse, 
rounded or cordate at base (in some cases very shortly 
rathe cordate ia a triangle 
sinus; heads Mane sins sessile in globose samen ves 
m. Leaves obtuse, rounded, truncate at base, or 
shallowly. and broadly cordate; is often 
wded — corymbs but not in dense 
nas 9 ; 
Petioles (of ae ean cauline leaves) 17-32 mm. 
ong 
Sicuae length rugose-bullate above, conspicu- 
nse ous 
spi membranaceous, neither — above nor, 
Peticl ney soa dh sotioulabed beneath...... 44. 
etioles 8-10 ng. 
Involucral scales broad, the ne — 
inner_ elliptical, stramineo 
53. EH. incarum. 
: the outer pe Tomy 
oo) Woe ae OE Oe 9 ea eee 8 Oe eee 
nt “A 
tivehowel scales narrowly oblong, densely wher oie 
entose, Oo rely I-nerved...... 
k. Leaves PP on = pea or -lanceolate, acutish to acuml 
nate or attenuate at base 
gal Based acutish at base and definitel tioled, 
SS 
air a above, andular-punetate at pu < eae 
te theners e 31. E. hetianthifolium 
Leaves Jee ameter at base to an often short and 
veneers somewhat scabrous to 
nsely canescent-tomentose beneath. ...---- 47. E 
obseure 
tomentose above, | 
