Nepeta. 



LABIATE. 



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. Jl. 

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

 p. 408 ; Bigel. fl. Bost. p. 234 ; Beck, hot. 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-HE AD, 



[ Prom drakon, a dragon, and l.cphale, 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. 



]. Dracocephalum parviflorum, Nutt. Smatt-jlotvered Dragon 's-head. 



Stem erect, somewdiat 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. fl. 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. 



Barren fields and woods, Watertown, Jefferson 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* 



