DIDYNAMIA GYMNOSPEEMIA. 
79 
I doubt much whether this West Indian species notwithstanding the re- 
ferences to Mich, and Pursh, belongs to our Flora. Mich, describes but 
one species, and the preceding is diffused every where over our country. 
Michaux besides was so cautious in proposing new species, that he hesita- 
ted to separate our plant from the original species of J acquin, and Pursh ’s 
information respecting our southern plants was not always accurate. 
PYCNANTHEMUM. Mich. 
Involucrum multi- 
bracteatum, capitulis 
subjectum. Calyx 
tubulatus, striatus. 
Corollm labium supe- 
rius subintegrum, in- 
ferius trifidum. Sta- 
mina subaequalia, dis- 
taotia. 
* Slaminihus exser- 
tis. 
I 
1. Incan dm. 
P. foiiis oblongo-'o- 
vatis, acutis, subser- 
ratis, cano-tomento- 
sis, petiolatis; capitu- 
lis compositis, lateral- 
ibus terminalibusque ; 
bracteis setaceis. 
Capitulum surroun- 
ded by an involucrum 
of many leaves. Ca- 
lyx tubular, striate, 
tipper lip of the Co- 
rolla nearly entire, 
the lower 3-parted. 
Stamens equal, dis- 
tant. 
* Stamens exserled . 
Leaves oblong o- 
vate, acute, somewhat 
serrate, hoary, tomen- 
tose, on petioles ; 
heads compound, la- 
teral and terminal; 
bracteas setaceous. 
Mich. 2. p. 7* Pursh 2. p. 409. Nutt. p. 33. 
Clinopodium ineanum, Sp. pi. 3. p. 132. Walt. p. 164. 
Root perennial. Stem herbaceous, branching, 3 — 6 feet high, 4-angled^ 
with the angles rounded, glabrous at base, very pubescent near the sum- 
mit. Leaves opposite, acute at each extremity, pubescent, the pubescence 
on the lower surface of the lower leaves, and on both sides of the upper, 
double, the shorter in floccose spots, giving the leaves a discoloured appear- 
ance. Flowers in heads, composed of compact cymes,, the lateral ones 
on short footstalks, bracteas linear or setaceous, -longer than the calyx. 
