©RACOCEPHALUM. XCHI. LABIATiE. 435 



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



Er^t, tall, hoary-tomentose ; Ivs. petiolate, cordate, coarsely crenate-ser- 

 rate ; Jls. toiked, the whorls slightly pedunculated. — % This common plant is 

 naturaliz^fteverywhere about old buildings and fences. Cats are very fond of 

 it and willJ^Mdevour it with the greatest avidity. Stem square, pubescent, 

 branching^aBj^bigh. Leaves very evenly bordered by tooth-like or crenate 

 serratures, am^Ejgell as the whole plant, covered with a soft, hoary down, 

 paler beneath, "^^^^is many, white or purplish, the lower lip dotted with 

 crimson. July. "^^Bffe 



2. N. GLECHoi»M|feenth. (Glechoma hederacea. Linn.) GilUover-the- 

 ground. Grounot^. (Fig. 51.) — Lis. reniform, crenate; cor. about 3 



times as long as the c^yx. — % A creeping plant, naturalized about hedges, 

 walls, &c. Stems prostrate, radicating at base, squars.^, 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. 



24. LOPHANTHUS.' Benth. 

 Gr. Xodos, a crest, av^o^ ; 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. NEPEToiDEs. Benth. (Hyssopus. Linn.') 



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

 ovate and ovate-lanceolate, acutely serrate; petioles smoothish. — 7]. Middle! 

 and Western States ! A tall, branching, pale green herb, common about fences 

 and dr/ hedges. Stem 3 — Gi' high, the sides somewh.it concave, and the angles 

 prominent. Leaves acuminate, about 4' by 2'. Flowers in crowded, axillary 

 verticils, Jbrming 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 ; Irs. 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 exserteci- July, Aug. 



25. DRACOCEPHAlUM. 



Gr. SpaKtii, dragon, x-£i^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 with large., conspicuous bracts. 



1. D. coRDATUM. Nutt. Cordate-lcaved Dragonhead. 



Stoloniferous ; sc. and elongated petioles pubescent ; [vs. cordate, obtusely 

 crenate, sparingly hirsute above ; spike unilateral ; l)racts broad-ovate, entire, 

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

 acute, almost pungent. — % Islands of the Ohio, 40 miles below Pittsburg, Autt- 

 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 snl;.-.essile. Flowers secund. Corolla pale blue, about 1' long, orifice 

 much (i;iat 'd. June. 



