FLORA BOREALI-AMERICANA.
(O rd. LI. COMPOSITiE. Linn.; continued from Vol.1.)
Trib. V. Asteroide®. Less.
Subtrib. I. Astere.®. Less. Capitula nunquam dioica, plerumque heterogama, floribus
$ in ambitu aut uni- aut, si pluriserialibus, corollas tunc lingulatas gerentibus, fioris
busque $ in centro. Rachis plerumque ebracteolata aut, ubi bracteolata, pappus per-
fectus et multiradiatus. ntherce ecaudatce. Less.
52. SOLIDAGO.* L.
Radius fcemineus uniserialis. Discus hermaphrodites. Pappus uniserialis, pilosus
Achenium teretiusculum, multicostatum.— Herbae plerumque Americana et data, pauciores.
Europea m l Asiatica, foliis alternis integris: capitulis parviusculis luteis plerumque in cymas
scorpioides dispositis et secundis; involucris imbricatis, polyphyllis, rachis (seu receptacu-
lum) nuda. Less.
* Racemis secundis; foliis subtriplinerviis.
1. S-Canadensis; caule villqso erecto, foliis lanceolatis serratis triplinemis scabris
racemis. paniculatis secundis recurris, ligtdis abbreviatis. Ait.—Linn.—Jit. Hart. Kern
ed. 1. y. 3. p. 210. Pursh, PL Am. v. 2. p. 535. Elliott, Carol, v. 2. p. 389.—ft folfc
angustioribus, floribus minus secundis.
Hah. Throughout Canada, and from Lake Huron to Fort Franklin, on the Mackenzie River. /3. Columbia
Doughs—A very polymorphous plant, as Willdenow well observes, varying in the height of the stem in
the entire or serrated leaves, and in the greater or lesser depth of the serratures. One” specimen which I
possess, tallying with the ,5. Canadensis of Herb. Banks., is from Boston, and has much more numerous leaves,
A genus, U rn * observes, only d.ileimg from Aster in its rouhded, many-ribbed, not piano-compressed and
bicostate aehmm, but easdy distinguished by the habit, and by the colour (yeiiow) of the flowers—In the determination
of the species, attended perhaps with more difflculty than that of the species, of any other genus, m e its .near allv
Aster, I have been greatly aided by Dr. Booth As the Hortus Kewensis was the authority for a considerable number
of species, the comparison of specimens with the Banhsi,n Herbarium, where original specimens are preserved became
essentially necessary, and this Dr. Boott has most kindly accomplished for me. Still, as to the value of the relative characters, I dare scarcely offer any opinion. the limits of the s1p ecies’, or