DIDYNAMIA GYMNOSPERMIA. 
83 
pearance from the other species of this genus, I have followed Mr. Nutt- 
all generally in their arrangement and characters. 
Grows in damp soils in the mountains of Carolina. 
Flowers July — August. 
** Staminibus in- 
clusis. 
8. Muticum. 
P. foliislanceolatis, 
leviter rariterque 
dentatis, nervoso-cos- 
tatis, giabellis ; brac- 
teislanceolatis, acutis. 
** Stamens inclu- 
ded. 
Leaves lanceolate 
slightly toothed, rib- 
bed, glabrous ; brac- 
teas lanceolate, acute. 
Pursh 2. p. 410. 
Brachystemum muticum. Mich. 2. p. 6. 
A plant X 8—24 inches high. Leaves sessile, very sparingly toothed, 
glabrous and with the whole plant dotted. Capituli somewhat loosely 
dowered. Bracteas scarcely longer than the heads. Bracteas and teeth 
of the calyx acute, but neither acuminate nor awned. Teeth of the ca- 
lyx fringed. Corolla pubescent, whitish, small. 
Grows in the upper districts of Georgia and Carolina, Dr. Baldwin 
and Michaux. 
Flowers. 
9. Verticillatum. 
Leaves ovate, lan- 
ceolate, sometimes 
toothed, pubescent ; 
whorls compact; brac- 
teas acuminate* 
Pursh 2. p. 410. 
Brachystemum verticillatum. Mich. 2. p. 6. 
Stem 18 — 24 inches, square, branching, when young very pubescent. 
Leaves sessile, very acute, many of them' very distinctly though remotely 
denticulate, pubescent and not as distinctly ribbed as the preceding species. 
Bracteas acuminate and with the calyx almost villous, teeth of the cafyx 
short but slightly acuminate, the whole plant dotted 5 the calyx sprink- 
led with resinous atoms, flowers small. 
Grows in the mountains of Carolina, 
Flowers July— August. 
P. foms ovato lan- 
ceolatis, interdum 
denticulatis, pubes- 
centibus, verticillis 
compactis ; bracteis 
nrnminntic 
