CATALOGUE. ^75 
spatulate or linear-obovate, entire, 1-1^' long; scapes 1-6 high, nsi.ally 
leafless and bearing a single head 9-15" broad ; involucre of 2 rows of oval 
or oblong scales equaling the disk; rays 10-12, broadly cuneate, 3-toothed 
and often sprinkled with resinous atoms ; pappus of 5-7 broadly ovate 
scales abruptly tipped with slender awns.— Saskatchewan and the Missouri 
Basin to Colorado and New Mexico. A glabrous and awnless form (Var. 
glabra, Gray) occurs in Illinois, and it is quite probable that A. Torreyana 
and A. lamta are but forms of this species.— East Hundjoldt Mountains ; 
7,500-9,000 feet altitude ; July, August. (615.) 
AcTiNELLA RiCHAEDSONii, Nutt. Caulescent, puberulent; stems 3-17' 
high from a perennial somewhat woody branching caudcx, lealy; leaves 
3-6' long; pinnatcly or irregularly parted into a few long iiai iowly-lincar 
divisions; heads on long peduncles, loosely corymbose, 1' broad; involucre 
much shorter than the disk, the scales in two rows, ol)l()iig or ovate, the 
outer ones united at the base; rays 8-10, oblong-cnneate ; disk-corollas 
densely gland ular-puberulcnt ; achcnia villous; pappus of 5-7 ovate acumin- 
ate or aw^ied scales. — Saskatchewan to Colorado, New Mexico, and Arizona. 
West base of the East Humboldt Mountains ; 6,000 feet ; August. (616.) 
Var. CANESCENS. Whitish with a soft tomentum ; stems a span high or 
less, bearing 1-3 rather large heads ; disk-flowers somewhat elongated ; 
scales of the pajipus acute, nearly or quite awnless.— On a peak in the East 
Humboldt Mountains; 9,000 feet altitude; August. (617.) 
Helenium autumnale, L. North America, from Hudson's Bay to 
Florida and Cahfornia. Valleys of Northeastern Nevada; 6,000 feet eleva- 
tion; August, September. (618.) A form with narrower and rigid heaves, 
the whole plant minutely scabrous, is the same as Liiidheimer's 645, and was 
found at the mouth of American Fork Canon, in the Walisatch, at 5,000 
feet elevation. (619.) 
Helenium Hoopesii, Gray. Pwc. Acad. Phil., March, 1 863, 65. Stem 
stout, somewhat tomentosc, 1^-2° high; leaves pale-glaucoiis, thickish, 
punctate, smooth or shghtly pubescent, entire; radicrd ones spatulate, nar- 
rowed into a short and In-oad-winjjfcd jK'tiole, often vci'v lai-irc ; cauliiie ones 
oblong-lanceolate, semi-amplexicaul ; heads 3-6, very larufc, 2-3' broad, long- 
peduncled ; involucres whitish-tomcntose, the scales oblong-lanceolate ; rays 
15-20, (20-30, Gray,) usually safiron-yellow, lanceolatr-sjKitidate : pappus 
of lanceolate-subulate obscurely nerved scales, as long as < he villous atdjeniuni. 
