DIDYNAM1A ANG10SPERMIA. 
96 
infra bidentatus. Co- 
rollce labium superius 
emarginatum, inferius 
majus. Semen uni- 
cum. 
1. Leptostachya. 
cleft, the lower one 2- 
toothed. Upper lip of 
the eoro/fe emargin ate, 
much smaller than 
the lower. Seed one. 
Sp. pi. Walt. p. 166. Mich. 2. p. 16. Pursli 2. p. 415. 
Root perennial. Stem herbaceous, erect, about a foot high, spar- 
ingly branched and with the whole plant vers^p wbescent. m Leaves 
opposite, spathulate ovate, acute, toothed, the lower ones on petioles 
about an inch long. Flowers opposite on an erect simple terminal spike. 
Rracteas three at the base of each flower, subulate, persistent, half as 
long as the calyx. Calyx after flowering reflected, closely appressed to the 
stem, tubular, 5 ribbed, 2 lipped, the upper lip with three setaceous seg- 
ments, the lower lip longer, 2 cleft. Corolla somewhat tubular, two 
lipped, white tinged with purple, the upper lip short, obtusely two tooth- 
ed, the lower one larger, 3 lobed. Seed one. 
Grows in shady light rich soils. 
Flowers June to September. 
VERBENA. Gen. Pl. 
Calyx 5-fidus. 
Corolla infundibuli- 
formis, tubo incurvo, 
limbo inaequali, 5-fido. 
Semina 2 — 4. 
1. Aubletia. 
V. assurgens ; spi- 
cis solitariis peduncu- 
iatis, imbricatis $ co- 
rollarum laeiniis emar- 
inatis ; foliis ovali. 
us,inciso serratis,dis- 
sectisque, petiolatis. 
Calyx 5-cleft. Co- 
rolla funnel shaped, 
with the tube curved 
and the border une- 
qual, 5-cleft. Seeds 
2—4. 
Assurgent ; spikes 
solitary, imbricate, on 
long peduncles ; seg- 
ments of the corolla 
emarginate j leaves 
oval, deeply serrated, 
and divided on peti- 
oles. 
Sp. pl. 1. p. 119. Michaux 2. p. 3 3. Pursh 2. p. 415. 
Anon. Caroliniensis. Walter p. 164, 
