Dracocephalum. XCIII. LABIATE. 435 



1. N. CATARiA. Catnep. Catmint. (Fig. 51.) 



Erect, tall, hoary-tomentose ; lis. petiolate, cordate, coarsely crenate-ser- 

 rate ; Jis. spiked, the whorls slightly pedunculated. — % 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. Glechoma. Benth. (Glechoma hederacea. Linn.) Gill-over-the- 

 ground. Ground Ivy. (Fig. 51.) — Lts. reniform, crenate; cor. about 3 



times as long as the calyx. — 1\ 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 lormerly used in ale, also in medicine. May. 



24. LOPHANTHUS. Benth. 

 Gr. Xo(4oj, a crest, ai/^of ; 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. NEPETolDEs. Benth. (Hyssopus. Linn.) 



St. smooth, quadrangular, with the angles acute and slightly winged; Ivs. 

 ovate and ovate-lanceolate, acutely serrate ; petioles smoothish. — % 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 ; Ivs. cordate-ovate, 

 crenate-serrate; petioles ciliate-pubescent. — % 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. ipaKW, dragon, vE^aXof, 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 loith large., conspicuous bracts. 



1. D. cordatcm. Nutt. Cordate-leaved Dragonhead. 



Stoloniferous ; st. and elongated petioles pubescent ; Ivs. cordate, obtusely 

 crenate, sparingly hirsute above ; fpike unilateral ; bracts broad-ovate, entire, 

 nearly as long as the calyx ; ped. bibracteolate, mostly 1-flowered ; cat. segments 

 acute, almost pungent.— "IJ. Islands of the Ohio, 40 miles below Pittsburg, Nutt- 

 all. Stem about If 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. 



