60 SYNOPSIS OF THE FLORA OF COLORADO. 
Summit of Pike’s Peak, Porter. Snow Mass Mountain, at 13,000 feet 
altitude, Mount Lincoln at 12,000 feet, and Long’s Peak, Coulter. Sangre 
de Cristo Pass, Brandegee. Gray’s Peak, Redfield. 
ERIGERON TRIFIDUM, Hook. FI wok 
stems 2’—3’ high, leafy below, naked or scape-like with 1-2 linear bracts, 
g, white or blue, rather broad; 
achenium minutely hairy; pappus hispid-scabrous, as long as the disk 
of the corolla. Alpine—White House Mountain, at 13,000 feet altitude, 
Coulter, tarpad ft 
or white.—AHall & Harbour, 243 
altitude, and Mount Lincoln, at 12,000 feet, Coulter. 
ER 
woolly ; caudex thick; stems 1-5, 3/-8/ high, rather leafy, bearing a 
Single head; radical leaves oblong-spatulate, 1/-2’ long, 2/-3” wide, 
those of the stem smaller and linear-lanceolate; heads solitary, large; 
involucre very woolly; scales herbaceous, elongated, with naked purple 
tips; rays numerous, long, white or purple ; achenia sparingly hirsute; 
pappus of barbellate set rather shorter than the disk corollas, and. 
with a few very short ones intermixed.—Mount Lincoln, at 12,000 feet alti- 
tude, July, Coulter. 
Var. ELATIUS, Gr. Sill. Jour. (N. 8.) 33, p. 8. 19-20 high, very leafy, 
. 
of the involuere in about 3 series, equaling the disk, lance-linear, inner 
with shorter bristles intermixed with the longer ones.—Near EF. ursinum, 
_ Eaton, in King’s Rep., v. 5, p. 148.—Hall & Harvepe, 235. Clear Creek 
ter, ah 
* ERIGERON ARMERLAFOLIUM, Turez. Gray, Proc. Am. Acad. v. 8, p- 
648.—Hall & Harbour, 232, (as HE. acre, I.) South Park, Porter. 
Twin Lakes and on the Upper Arkansas, Coulter. 
ERIGERON BELLIDIASTRUM, Nutt. Annual, hirsute-pubescent, 1° or 
much branched, lea ; 
more ; Stem corymbosely fy th 
branches elongated and divaricately spreading ; lower leaves on slender 
at 
