POLYGAMIA, SUPERFLU A. 123 
Blue-stemmed Golden-rod, 
A very elegant species, two or two and a half feet high. 
Stem blue. Flowers deep brilliant-yellow. In woods and 
shady thickets ; common. Perennial. August, September. 
15. S. stem flexiious, glabrous, angular; racemes flexicauUs. 
erect, axillary ; ligulae middle size.- — Willd. and 
: Fursh, 
\ Icon. Pluk. aim. t. 235. f. 4. 
I Waved-stemmed Golden-rod. 
From one to three feet high, resembling very much No. 14, 
and from which it does not seem to be sufficiently distinct. 
The blue stem, however, of No. 14, will always distinguish it 
from the present species. In similar places with No. 14; 
common. Perennial. August, September. 
116 . S. stem erect; leaves ovate-acuminate, ser- latifoiia, 
I rate ; racemes lateral, simple. — Sp. FI. 
S. latifolia, Mich. 
S. flexicaulis, latifolia, Willd, and Pursh. 
This is generally considered as a variety of No. 15, from 
which it is certainly hiuch more distinct than is that species 
from No. 14. I have followed Muhl. in giving it as a distinct 
species. A very handsome plant, from eight to sixteen inches 
high — leaves very broad, subject to a disease, discovering itself 
in circular raised spots. On the rocks bordering the Schuyl- 
kill and Wissahickon ; abundant. Perennial. August, Sep- 
tember. 
17 . S. stem erect, hairy; leaves lanceolate, very rugosa. 
scabrous, rugose; lower ones adpressed-ser- 
rate ; racemes paniculated, leaning one way, 
j very open. — Willd. 
S. altissima, f. Ait. 
Icon. Dill. elth. t. 308. f. 396. (Pursh.) 
Wrinkled-leaved Golden-rod. 
About two feet high. An ordinary looking species. In 
Jersey, near Woodbury ; rare. Perennial. August. 
