DIDYNAMIA, GYMNOSPERMIA. 
45 
I From fifteen to eighteen inches, or two feet high. Flowers 
I large, purple, handsome. Along all our waters, in marshes, 
j and in damp low grounds and rich moist woods, very com- 
mon. Biennial. July, August. 
!’ 
j G. paniculate-braiiched, leaves linear; pedun- tenuifoUa. 
I cles axillary, opposite, longer than the flov/er. 
I mild. 
G. erecta, Walt, and Mich. 
Icon. Pluk. aim. t. 12. f. 4. 
A small, slender and delicate species, resembling small spe- 
cimens of the preceding. From a span to a foot high. Flowers 
like those of No. 1. In woods and fields, very common. Pre- 
fers a dryer soil than No. 1. Biennial. July, August. 
I 3. G. piihescent; stems sub-simple; leaves lan-flava. 
ceolate, very entire or dentated, the lower ones 
sub-pinnatifid* incised ; flowers axillary, oppo- 
site, subsessile. — Willd. and Pursh. 
Icon. Pluk. mant. 389. f. 3. 
A fine showey species, with large yellow flowers. From two 
to three feet high. In dry shady places, and on rocks in woods, 
common. Perennial. July. 
4. G. glabrous ; stem paniculate, leaves petiolate, quercifofia. 
pinnatifid : segments lanceolate-acute, entire or 
cut-dentate behind, the upper ones lanceolate- 
entire ; flowers axillary, opposite, pedicellate.-^-. 
Pursh. 
G. quercifolia, Pursh. 
G. flava, siveglauca, Muhl.? 
Rhinanthus Virginicus, Willd. 
Also a very elegant and showey plant, with yellow flowers. 
As I have found this species near Lancaster, I conclude Dr. 
Muhlenberg must have intended it by his G. flava, sive glmica. 
In Jersey, near swampy thickets, three miles below Kaighn’s 
point, and in the woods near Woodbury. Rare. Perennial. 
5. G. pubescent, brachiate-paniculate ; leaves ob- PeiUsuiaria, 
long, doubly cut-serrate and pinnatifid j flowers 
5 * 
