glaucum of Mr. Nurratt has a pubescent involucre, we 
must claim for that which is here represented, the right of 
being considered the original type of the species, and, as we 
have already done in the Flora Boreali-Americana, consi- 
der Dr. Sims’s plant (which has a flower scarcely half so 
large as this, a glabrous scape and involucre, of which the 
outer scales of the latter are erect and imbricated ; also. 
having narrower and quite entire leaves) as a variety. 
Our plants, which are quite hardy, were raised from 
seeds gathered by Mr. Drummonp in the prairies of the 
Rocky Mountains, during Capt. Sir Jonn Frankuin’s Ex- 
pedition. It flowers from June to August. 
Descr. Whole plant abounding in milky juice. Root 
somewhat fusiform, perennial, sending out runners, b 
which the plant increases to a very great extent. Stem 
none. Leaves numerous, from the crown of the root, six to 
eight or ten inches long, and of a glaucous colour, thus 
forming very conspicuous tufts, lanceolate, more or less™ 
downy, acute, tapering below into a broad footstalk, the 
margin entire, or sometimes very distinctly but irregularly 
toothed. Scapes longer than the leaves, thick, striated, 
woolly, single-flowered. Flowers very large, of a bright 
but not deep yellow. Involucre of numerous scales, of 
which an inner series is composed of nearly equal, up- 
right, linear-lanceolate scales, united at their base, the outer 
of many lax, spreading, and broader scales, thickly clothed 
with white, woolly hairs. Receptacle minutely pitted, the 
margins of the pit obscurely fimbriated. Corollas ligulate : 
the tube long, slender, about the mouth, or the outside, 
very villous. Germen oblong, by no means rostrate: Pap- 
pus white, rough. Anthers narrow, linear, orange. 
Fig. 1. Floret : magnified. 
