DIDYNAMIA ANG 10 SPERM I A. 
123 
corolla subrotata; cap- ear, acute; corolla 
sulis pubescentibus. somewhat rotate; cap- 
sules pubescent. 
Pursh 2. p. 737- Nuttall 2. p. 49. 
The specific character above recited contains the character of the S. 
pectinata as given by Pursh and Nuttall. The observations which follow 
apply to a species which has been many years in any herbarium under the 
trivial name of S. Jacksoni, and which I refer to this species with some 
hesitation. 
Root annual? Stem 2 — 4 feet high, profusely and brachiately branch- 
ed, obtusely 4-angled and with the whole plant cloathed with a viscid pu- 
bescence. Leaves lanceolate in their outline, the lower always pinnatifid, 
1 — 2 inches long, the upper small, and frequently entire. Floivers ax. 
illary, opposite, on peduncles longer than the upper leaves. Corolla 
somewhat rotate, of an obscure yellow. Stamens as long as the corolla. 
Capsule pubescent? 
First sent to me from Louisville, Ga. by Mr. Jackson. Along the di- 
rect road from Milledgeville to the Alabama, by the Indian agency, it oc- 
curs not unfrequently. In the low country I have not seen it. 
Flowers August — October. 
PEDICULARIS. 
Calyx 5-fidus. Co- 
rolla ringens, labio su- 
periore emarginato, 
compresso. Capsula 
2-locularis, mucrona- 
ta, obliqua. Semina 
tunicata. 
1. Canadensis. 
P. caule simplici ; 
foliis pinnatifidis, in- 
ciso-dentatis ; capitu- 
lo basi folioso,hirsuto; 
corollis galea setaceo- 
Gen. Pl 1003. 
Calyx 5-cleft. Co- 
rolla ringent, with the 
upper lip emarginate, 
compressed. Capsule 
2-celled, mucronate, 
oblique, Seeds coat- 
ed. 
Stem simple; leaves 
pinnatifid, notched 
and toothed ; head 
hirsute, leafy at base; 
helmet of the corolla 
