Ia 
1899] SOME ROCKY MOUNTAIN CHRYSOTHAMNI 373 
erect, yellowish-green branchlets, witha thin inconspicuous tomen- 
tum throughout: leaves rather numerous, especially above, 4- 
6" long, narrowly linear, sharp-pointed, plane or somewhat cana- 
liculate, viscidulous as are also the branchlets: inflorescence a 
narrow thyrsiform-panicle, rather leafy, at maturity barely sur- 
passing the uppermost leaves: heads about 12™" high; bracts 
few (10-14), not in strict vertical ranks, mostly acute or acutish, 
glandular on the greenish keel, from glabrate to ciliate-pubescent : 
corolla tube and throat scarcely distinguishable, but slightly 
expanded upward, the lobes about one eighth of the whole 
length, obscurely short-pubescent below: style branches exserted, 
the appendages longer than the stigmatic portion. 
This species has been secured but twice, both times on strongly saline 
soil, viz., at Buffalo, July 25, 1896, no. 2495, and on Vermilion creek, July 24, 
1897, no. 3590. Its nearest ally in habit and some other characteristics is 
C. frigidus, but in form of inflorescence it approaches C. Parry? (Gray) 
Greene. It differs from C. frigidus in being almost devoid of tomentum, in 
its yellowish branches, its green leaves, narrow leafy inflorescence, and its 
*xserted styles. It is also an earlier plant, one of the earliest of the several 
Species of this genus in this region. 
CurysorHamnus PARRYI (Gray) Greene, |. c.—The habitat and 
fange of this well-known species is always given as “parks of the 
Rocky mountains in Colorado,” but certainly similar parks in 
_ Southern Wyoming, at least, must be added. Typical specimens 
tte, J. H. Cowen, Breckinridge, Colo., August 1896; the writer's 
Nos. 2617 and 3495, Lincoln gulch, August 1896and Big creek, 
August 1897. 
___ Curysoruamnus Howarot (Parry) Greene,? l.c.—The habi 
of this, like the preceding, is given as “ parks of the Rocky moun- 
tains,” but it should be stated that the parks are very different 
| ‘Mtheir character, C. Parryi inhabits moist open ground, known 
Sparks, occurring at intervals in the timbered mountain ranges. 
C. Howardi inhabits that other class of parks, viz., extensive, 
Nigh, dry table-lands like North Park, Colo, and the Laramie 
‘Plains. It occupies the dry foothills and ridges and I doubt not 
that 
tat 
ith “Dr. Greene’s papers cite the literature of all the well-known species so fully 
| “ete Seems necessary only to call attention to this fact. 
