DIDYNAM1A GYMN0SPERM1A. 
H. capitulis opposi- 
tis ; bracteis lanceoia- 
tis calyce Iongioribus, 
foliis oblongo lanceo- 
latis, dentatis, basi at- 
tenuatis. 
Heads of flowers 
opposite; bracteas lan- 
ceolate, longer than 
the calyx ; leaves ob- 
long lanceolate, den- 
tate, tapering at base. 
Sp. pi. 3. p. 84. Pursli 2. p. 408. 
Clinopodium rugosum Walt. p. 164. 
Root perennial somewhat creeping. Stem herbaceous, erect, 3—4 feet 
high, 4-angled, pubescent, and somewhat scabrous near the summit. 
Leaves opposite, sessile, pubescent, dotted underneath, sometimes 2 or 3 
of the teeth very large, the base very long and tapering. Flowers on ax- 
illary heads, on long peduncles, the lower peduncles sometimes as long as 
the internodes, the upper ones much shorter. The involucrum many 
leaved (about 12) persistent, the leaflets generally in two series, unequal, 
the exterior ones larger, but all much longer than the calyx. Calyx some- 
what tubular, very pubescent, villous at base, the border 5-toothed, the 
teeth long, linear, equal. Corolla white, a little sprinkled with purple, 
the lower lip 3-cleft, the lateral segments small and obtuse, the intermedi- 
ate long, with a scale at base. Stamens shorter than the corolla. An- 
thers incumbent, reflexed. Style as long as the stamens. Stigma ob~ 
iuse. Seed 4, oval. 
Grows in damp soils in pastures, very common . 
Flowers July to September. 
2. Capitata. 
H. capitulis opposi- 
tis; pedunculo interno- 
diis longitudine ; brac- 
teis lanceolatis, calyce 
frugifero brevioribus ; 
foliis oblongis, utrin- 
que attenuatis,inaequa- 
liter serratis. 
Sp. pi. 3. p. 84. Mich. 2. p. 9. 
Heads of flowers op- 
posite;peduncle as long 
as the internodes;brac- 
teas lanceolate, short- 
ter than the calyx of 
the fruit; leaves oblong, 
tapering at each end, 
unequally serrate. 
Pursh 2. p. 408. 
