DRACOCEPHALUM. XCUI. LABIATZ. 425 
+A, N. cararia. Cainep. Catmint. (Fig. 51.) 
Erect, tall, hoary-tomentose ; lvs. petiolate, cordate, coarsely crenate-ser- 
rate; fis. spiked, the whorls slightly pedunculated.—2 This common plant is 
naturalized everywhere about old buildings and fences. Cats are very fond of 
it and will often devour it with the greatest avidity. Stem square, pubescent, 
branching, 2—3f high. Leaves very evenly bordered by tooth-like or crenate 
serratures, and as well as the whole plant, covered with a soft, hoary down, 
paler beneath. Flowers many, white or purplish, the lower lip dotted with 
crimson. July. : 
2. N. Grecnoma. Benth. (Glechoma hederacea. Linn.) Gill-over-the 
ground. Ground Ivy. (Fig. 51.)—Lvs. reniform, crenate; cor. about 3 
times as long as the calyx.—2 A creeping plant, naturalized about hedges, 
walls, &c. Stems prostrate, radicating at base, square, varying in length from 
a few inches to 1—2f. Leaves petiolate, opposite, roundish, cordate-reniform, 
hairy and glaucous. Flowers axillary, about 3 together. Corolla bluish-pur- 
ple, with a variegated throat. The 2 anthers of each pair of stamens meet 
with their 2 divaricate cells, forming the appearance of a cross. The plant is 
aromatic, and was formerly used in ale, also in medicine. May. 
4 LOPHANTHUS. Benth. 
Gr. dodos, acrest, aySos ; flowers in dense, terminal spikes. 
Calyx 15-ribbed, oblique, 5-cleft, upper segments longer ; corolla 
bilabiate, upper lip bifidly emarginate, lower lip 3-lobed, the middle 
lobe broader and crenate ; stamens diverging. 
1. L. NepeTéipes. Benth. (Hyssopus. Linn.) 
St. smooth, quadrangular, with the angles acute and slightly winged; 7vs. 
ovate and ovate-lanceolate, acutely serrate; petioles smoothish.—2 Middle! 
and Western States! A tall, branching, pale green herb, common about fences 
and dry hedges. Stem 3—6f high, the sides somewhat concave, and the angles 
prominent. Leaves acuminate, about 4’ by 2’. Flowers in crowded, axillary 
verticils, forming a terminal, green spike, which is nearly continuous above. 
Corolla greenish-yellow. Stamens exserted. July, Aug. 
2. L. scHROPHULARIFOLIUS. Benth. (Hyssopus. Linn.) 
St. pubescent, quadrangular, with the angles obtuse; vs. cordate-ovate, 
crenate-serrate; petioles ciliate-pubescent.—2 Tall, stout and branching, with 
the general aspect of the former species, and found in similar situations. ‘The 
herbage is often changed to dark purple. Stem 2—4f high, purple. Leaves 
about 5’ by 3’, coarsely serrate, acuminate. Flowers in crowded, axillary ver- 
ticils, forming a long, dense, terminal spike. Corolla pale purple, more con- 
spicuous than in the first. Stamens and style exserted. July, Aug. 
25. DRACOCEPHALUM. 
Gr. deaxw, dragon, kepados, head; from the resemblance of the flowers. 
Calyx subequal, oblique, 5-cleft, upper segments larger ; cor. bila- 
biate, upper lip vaulted, emarginate, throat inflated, lower lip spread- 
ing, 3-cleft, middle lobe much larger, rounded or subdivided ; sta. 
distinct, ascending, the upper pair longer than the lower.—Flowers 
axillary and terminal, usually with large, conspicuous bracts. 
1. D. corpAtum. Nutt. Cordate-leaved Dragonhead. 
Stoloniferous; sf. and elongated petioles pubescent ; Jvs. cordate, obtusely 
crenate, sparingly hirsute above; spike unilateral; bracts broad-ovate, entire, 
nearly as long as the calyx; ped. bibracteolate, mostly 1-flowered ; cal. segments 
acute, almost pungent.—2| Islands of the Ohio, 40 miles below Pittsburg, Nutt- 
all, Stem about 1f high, quadrangular. Leaves 3 or 4 pairs, obtusely cor- 
date, almost as broad as long, petiole about as long as the lamina (1’), upper 
pairs subsessile. Flowers secund. Corolla pale blue, about 1’ long, orifice 
much dilated. June. : 
