CATALOGUE. 
155 
linear, mostly obtuse ; flowers of the ray 12-15, of the disk about 20. 
Stream-banks, mountains of \Yestern Nevada to the East Humboldt ^Moun- 
tains ; 5,500-7,000 feet elevation ; August, September. A very showy plant, 
nearly intermediate between the true S. Guiradonis and S. speciosa ; it has 
however the elongated leaves and the very short rays of the former, and the 
stem is moreover perfectly smooth, even to the smallest branchlets of the 
panicle. (556.) 
Solid AGO pumila, T. & G. Csespitose, glabrous and somewhat resinous; 
stems 4-9' high, very many from a stout underground woody caudcx ; leaves 
crowded, narrowly lanceolate, strongly 3-nerved, very acute and somewhat 
mucronatc ; the radical 2-3' long, 2-3" wide, narrowed into a short petiole ; 
heads sessile in little clusters which are arranged in a dense flistigiate 
corymb ; involucres cylindrical-oblong, the closely imbricated scales carinate, 
ovate or oblong, obtuse, with scarious margins and appressed scarcely her- 
baceous tips, rather obtuse ; rays 1-3 ; disk-flowers 3-4 ; achenia glabrous. — 
Colorado, (Vasey,) and New Mexico; "western declivity of the Rocky 
Mountains," (Nuttall.) Western Nevada, East Humboldt Mountains, and 
the Wahsatch; 5-6,500 feet elevation; May-August. (557.) 
SoLiDAGO NEMOEALis, Ait. Saskatchewan and Canada ; throughout the 
United States w^estward to Texas and New Mexico. Southeastern Idaho 
and in the Wahsatch ; 6,000 feet elevation ; July-October ; forms with 
mostly entire, sparingly roughened, elliptical leaves, indicating a transition 
towards S. Radula. (558.) A form of this plant, with stems 8-12' high, 
leaves more canescent, and the heads disposed somewhat corymbosely, makes 
a close approach to <S. nana. Colorado, (248 Hall & Harbour.) Ruby 
Valley, Nevada, and Bear River Valley, Utah; 6,000 feet elevation; 
July. (559.) 
SoLiDAGO ELONGATA, Nutt. Stem pubcrulcnt, becoming smoothish, 
1-4^ high, erect from a creeping rhizoma ; leaves crowded, uniform, lanceo- 
late, narrowed at both ends, acute, 3-ncrved, veinlets reticulated, sparingly 
serrate, minutely scabrous on the margins and along the veins beneath ; 
panicle one-sided, rather dense, elongated or pyramidal, with recurved 
branches ; heads mostly rather small ; involucral scales loosely imljricated, 
linear-subulate, without greenish tips ; rays small and narrow, more numerous 
than the disk-flowers ; achenia pubescent. — ^Arctic Ameiica to Cahfornia and 
New Mexico. . Virginia City, (Bloomer.) Var. ,9. T. & G. Leaves lanceo- 
