'Nbpeta. LABIATiE. 75 



2. Nepeta Glechoma, Benth. Ground Ivy. Gill. 



Stem procumbent, rooting at the base ; leaves reniform-cordate, crenate ; whorls axillary, 

 few-flowered ; corolla three times as long as the calyx. — Benth. Lab. p. 485 ; Darlingt. fl. 

 Cest. p. 356. Glechoma hederacea, Linn. sp. 2. p. 578 ; Engl. hot. t. 583 ; Pursh, ft. 2. 

 p. 408 ; Bigel. Jl. Bost. p. 234 ; Beck, bot. p. 280. 



Perennial. Stems 6-12 inches long, smooth ; the branches ascending. Leaves broader 

 than wide, on long petioles, green and a little hairy on both sides. Whorls distant ; the 

 pedicels short. Calyx tubular ; the teeth lanceolate, with a subulate point. Corolla bright 

 blue, about half an inch long ; the lobes rounded. 



Road-sides, door-yards, and along fences : introduced from Europe. May - June. 



17. DRACOCEPHALUM. Linn, (in part) ; Benth. Lab. p. 490. dragon' s-HBAD. 



[ From drakon, a dragon, and kephale, a head ; in allusion to the flowers.] 



Calyx tubular, 5-toothed : upper tooth broader and often largest ; the three upper sometimes 

 approximated. Corolla 2 - lipped : upper lip erect, somewhat concave, emarginate ; the 

 lower spreading, 3-lobed ; middle lobe slightly 2- cleft : throat dilated. Stames 4; the 

 lower pair shorter : anthers approximated by pairs ; the cells divaricate. — Perennial or 

 biennial herbs. Whorls many-flowered, axillary or aggregated in a terminal spike. Bracts 

 mostly leafy, with bristle-pointed teeth. 



1. Dracocephalum parviflorum, Nuti. Small-Lowered Dragon's- head. 



Stem erect, somewhat branched ; leaves ovate-lanceolate, coarsely or incisely mucronate- 

 serrate, petiolate, green on both sides ; whorls in a terminal capitate spike ; upper tooth of 

 the calyx much broader than the others ; corolla scarcely longer than the calyx. — Nutt. gen. 

 2. p. 35 ; Benth. Lab. p. 496 ; Hook. Jl. Bor.-Am. 2. p. 115. 



Biennial. Whole plant nearly smooth. Stem 8-15 inches high, rather stout, obtusely 

 4-angled. Leaves 1^ — 3 inches long, obtuse at the base or somewhat cuneate, acute ; the 

 serratures deep and very acute : petiole half an inch to an inch or more in length. Spikes 

 globose or ovoid, about an inch in diameter ; the exterior floral leaves sessile, acute, with 

 subulate serratures. Bracts strongly veined, and fringed with rigid bristles. Calyx hairy, 

 15-nerved : teeth mucronate ; upper one ovate ; the others lanceolate and shorter. Corolla 

 4-5 lines long, pale blue ; the tube slender : upper lip emarginate ; middle lobe of the lower 

 lip much the largest, and emarginate. Achenia large, black, smooth. 



Ban en fields and woods, Watertown, Jefi'erson county {Dr. Gray). Rocky banks of small 

 lakes and rivers, St. Lawrence county. May - August. This plant occurs also in various 

 parts of British America ; and on the Upper Missouri, where it was discovered by Mr. Nuttall. 



10* 



