SYNOPSIS OF THE FLORA OF COLORADO. 59 
cated in about 3 series; rays numerous, pale purple or rose-color; ap- 
pendages ce br te subulate ; achenia densely villose.—South Park, 
Canby ; 
MACH ARANTHERA CANESCENS, Gr. Minutely canescent with a soft 
pubescence ; atin low, much branched, corymbose ; leaves linear, entire 
or sparsely toothed towards the apex : sales of the obovoid involucre 
on acute, imbricated in about 4 series, with slightly squarrose 
tips; rays 18-20, rather large, purplish- blue; appendages of the style 
subaliste. lanceolate. T. & G., Fil. N. Am. 2, p. 101, under Dieteria, aie 
—Exceedingly variable in its pibeseenee, in phd: aca “o size the 
heads, toothing of the leaves, and involucres.—Georgetown, Dr. ‘Smith. 
Var. LATIFOLIA, Gr., Pl. Wright. 2, p. 75. (Di ieteria Neh Torr., in 
Em. Rep., p. 142. ’Seabrous oucaens or puberulent ; stems 18/—-2° high; 
“etn oblong or lanceolate, sharply and rather coarsely toothed, broader 
leaves 6-8’ wide; involuere hemispherical, seales linear, in several 
series, with rather short, subulate, green, squarrose tips; heads large, 
variable in size.—Fo oot-hills, near Denver, Porter. Georgetown, Dy, 
Smith. Sierra Madre Range, Coulter 
Var. ALPINA, Porter. Dwarf, a1 _3/ high, eae radical leaves 
cuneate-spatulate, obtu use ; stems short, bearing 1-2 large heads, 1’ in 
iameter; scales of the involuere lance, site, tips Fag. squarrose- 
spreading, glandular-pubes eho Parry, 1872. 
MACH @RANTHERA TA nae LIA, "Nee ees. (Die gin ee a 
Natt. 7. & G. Fl. N. Am. 2, p. "101, ) Pubescent and somewhat scid, 
~ eit sp sani rt ate —— s 6-12’ sone, bra nehiets ceribatied 
si 
ing, herbaceous tips; rays about 20, large, reddish- purple; appendages 
- ai style subalate: pappus pale reddish. brown, copious, "rather rigid ; 
obov rms ny-striate, villous.—Hall & Harbour, 285. Cation 
City. Brand pe anby. Georgetown, Dr. Smith. ales Redfield. 
IPL PUS ERICOIDES, T. & G. Fl. N. Am. 2, p. 182. Strigosely 
Sidesven re Gane 2/-6/ high, branching ren 4 suffratescent base ; leaves 
narrowly spatulate or linear, 2-6” long, crowded, appressed or spread- 
ing, rigid, mucronate, often bristle sisperk seen rea ciliate ; heads 
terminal on the ends ‘of the strict branches, rather small; scales of the 
involuere lanceolate-linear, in about 3 series, suite L nerved, with seari- 
ous margins; rays rather short, white; exterior pappus very minute; 
achenia peers —Hall & Harbour, 233. Cation City, Brandegee. 
ERIGERON CANADENSE, L.—Near Cafion City, Brandegee. Denver, 
Dr. Smith; " Coulter: 6 
_Egtexron DIVARICATUM, Mx.—Near Denver, Dr. Smith. 
ager A Gta teks bree More or less. canescently hirsute ; 
aa 
ceous, inner ones ne BORO s with narrow wargind and long cater aoe 
-tipe; ra rays many, twice the length of the involucre; white, pale-pink, 
or blue; achenia hirsute; pappus of 12-15 bri istlen, with a few minute 
sete intermixed.—Hall & Harbour, sata che 8 — _ 
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