scarcely decurrent, somewhat acute, all of them quite en- 
tire, glabrous, ciliated at the margin, and the midrib 
beneath, sometimes pubescent, nerved; the merves almost 
parallel with the midrib, anastomosing. Peduncles two to 
four inches long, single flower: flower large, handsome. 
Involucre hemispherical, of many subulato-lanceolate, pu- 
bescent, closely imbricating scales. Florets of the ray very 
numerous, exceedingly narrow, linear, purple, female, but 
apparently abortive, bidentate at the extremity. Germen 
oblong, crowned with a pappus of few rough fis Style 
longer than the tube’of the floret: Stigma bipartite; seg- 
ments filiform, much spreading. Florets of the disc yellow, 
tubular, five toothed, perfect. Germen oval-oblong, rough 
atthe margin. Pappus sessile, rough, of few hairs. Anther 
scarcely protruded. Stigma bipartite ; its segments some- 
what incurved. 
There are few Genera, even in the Natural Order of Com- 
Posit#, whose species are so difficult to determine as those 
of Ericeron. Of the present individual, I can confidently 
say, that it is the E. glabellum of Ricuarpson in FRANKLIN'S 
Journal, and that it accords sufficiently well with the de- 
scription of Nurrar, who discovered it on the plains of the 
Missouri, especially about Fort Mandan, in great abund- 
ance. Dr. Ricuarpson gathered it in the moods country of 
British N. America, between the latitudes 54° and 64° North, 
and Mr. Drummonp, in the second overland Arctic expedi- 
tion, under the command of Captain Franx1in, found it m 
the prairies among the rocky mountains, and on the plains 
of the Saskatchawan. From seeds brought home by that 
zealous Botanist, our plants were raised at the ee 
Botanic Garden. They flowered in the autumn of 182, 
and continued in blossom until Christmas. 
| 
- 1. Floret of the Ray. 2, Floret of th i son of a hair of 
as Pape eee e Dise. 3. Portion 
