a 
EES POLYGONACEA! 573 
4-6, in terminal heads, 3-4 lines high, angled, contracted, near the top: 
flowers wine-red, at length 3-lines long: its segments very unequal, the 
rs anes ovate with cordate base; the inner spatulate. Eastern Oregon to 
alifornia. 
-E. dichotomum Dougl. Benth. in DC. Prodr. xiv, 14. Densely white- 
tomentose below: stems short but somewhat diffuse and depressed, leafy: 
leaves oblong or oblanceolate. acute at each end, an inch or two long, on 
slender pane peduncles rather short 6-18 inches high, bearing a 3-rayed 
um bel :he somewhat erect rays sparingly di- or trichotomous: involucre 
usually solitary tomentose, about 3 lines long, strongly teothed: flowers 
white to rose-red 144-2 lines long, the outer segments broadly elliptical, 
the inner linear-spatulate. On dry rocky hills eastern Washington to 
California. | 
‘E. niveum Dougl. Densely white-tomentose below: stems rather few; 
short and depressed: leaves oblong 6-12 lines long, petioled: scapes 4-10 
inches high, bearing a 3-rayed umbel: involucres usually solitary, tomento- 
se, about 2 lines high, with some or all of the teeth produced and often 
recurved: flowers white or rose color, its outer segments round-oval, the 
inner obovate-spatulate. On dry rocky hillsides, eastern Oregon and 
Wasbington to Idaho. 
* * Flowers uarrower at tase, the sepals similar and nearly 
equal : achenes smooth or nearly so. 
+ Perennials with short branched caudex, naked peduncles and 
capitate involucres. 
++ Densely white-tomentose, dwarf and cespitose, alpine or subal- 
pine: heads solitary. ; 
E, pauciflorum Pursh Fl. 735. Stems very short, loosely tufted, cov- 
ered with the dilated bases of the petioles: leaves linear or linear-spatulate, 
1-3 inches long, with revolute margins, glabrous, or sparingly pubescent 
above, white-tomentose or cottony beneath, narrowed into slender petioles: 
peduncles 2-6 inches high: involucres 4-10, in a capitate cluster, 5- 
toothed, the teeth obtuse, more or less reflexed: flower white, campanulate, 
1% lines long, its segments ovate. On dry plains, eastern Oregon to Neb 
E. multiceps Nees Max. Reis. N. A. ii, 446. Stems short, tufted, 
much branched, sometimes several inches long: leaves spatulate 6-20 lines 
long, numerous, obtuse at the apex. narrowed below into petioles: pe unc- 
les 1-5 inches high: involucres 3-12, in a capitate cluster, sessile, 114 lines 
long, 5-6 toothed, the teeth acute: flowers white or rose-color, 144-2 Jines 
long, campanulate, somewhat villous, the segments cuneate, obtuse or 
emarginate. On dry plains, Idaho to Nebraska. 
++ ++ Peduncles mosily tall and stout, from a sparingly branched 
caudex : heads solitary or few, in a long-jointed subumbellate cyme. 
E. nudum Dougl. Benth. Trans. Linn. Soc. xvii, 413. ? Stems short 
and loosely branched 1-2 inches long: leaves ovate or oblong-ovate, the 
blade 1-3 inches long, obtuse or acutish at the apex, rounded, truncate or 
cordate at base, green and glabrate above, densely white-tomentose be- 
neath, on petioles 2-6 inches long: peduncles rather slender 1-2 feet high, 
somewhat tomentose: inflorescence a compound umbel: involucres tomen- 
tose, campanulate about 2 lines long its triangular teeth erect: flowers yel- 
low to reddish, glabrous about 144 lines long, its segments elliptical, round. 
ed at the apex. On dry hillsides, southwestern Oregon to California. 
EK. elatum. Dougl. Acaulescent: leaves all ina rosulate tuft, ovate-ob 
long or sublanceolate, narrowed into petioles, rarely subhastate or subco 
date at base, the margins usually undulate, green and glabrate above ver 
softly villous-pubescent, or almost velvety beneath, on long slender pet 
