CATALOGtTE. 175 



gpatulate or linear-obovate, entire, 1-1 J' long ; scapes 1-G high, usually 

 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 J Grray) occurs in Illinois, and it is quite probable that A. Torreyana 

 and A. lanata are but forms of this species. — East Humboldt 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 caudex, leafy; leaves 

 3-6' long; pinnately or irregularly parted into a few long narrowly-linear 

 divisions ; heads on long peduncles, loosely corymbose, 1' broad ; involucre 

 much shorter than the disk, the scales in two rows, oblong or ovate, the 

 outer ones united at the base ; rays 8-10, oblong-cuneate ; disk-corollas 

 densely glandular-puberulent ; achenia villous ; pappus of 5-7 ovate acumin- 

 ate or awned 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 pappus 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 California. Valleys of Northeastern Nevada ; 6,000 feet eleva- 

 tion; August, September. (618.) A form with narrower and rigid leaves, 

 the whole plant minutely scabrous, is the same as Lindheimer's 645, and was 

 found at the mouth of American Fork Canon, Ih the Wahsatch, at 5,000 

 feet elevation. (619.) 



Helenium Hoopesii, Gray. Proc. Acad. Phil.., March, 1863, p. 65. Stem 

 stout, somewhat tomentose, 1^-2° high; leaves pale-glaucous, thickish, 

 punctate, smooth or slightly pubescent, entire ; radical ones spatulate, nar- 

 rowed into a short and broad-winged petiole, often very large ; cauline ones 

 oblong-lanceolate, semi-amplexicaul ; heads 3-6, very large, 2-3' broad, long- 

 peduncled ; involucres whitish-tomentose, the scales oblong-lanceolate ; rays 

 15-20, (20-30, Gray,) usually saffron-yellow, lanceolate-spatulate ; pappus 

 of lanceolate-subulate obscurely nerved scales, as long as the villous achenium. 



