LABIA TAE. 



oblique, 15 -nerved, 5-toothed, scarcely 2-lipped, but the upper teeth usually 

 longer than the lower. Corolla-tube enlarged above, the limb strongly 2-lipped; 

 upper lip erect, entire, emarginate or 2-lobed; lower lip spreading, 3-lobed. An- 

 thers 2-celled, the sacs divaricate. Nutlets ovoid, compressed, smooth. [Ancient 

 Latin name of catnep.] About 150 species, natives of Europe and Asia. 



i. Nepeta Cataria L. CATMINT. CATNEP. NEP. (I. F. f. 3094.) Per- 

 ennial, densely tomentulose-canescent, pale green; stem 6-9 dm. high. Leaves 

 ovate to oblong, petioled, acute, coarsely crenate-dentate, mostly cordate at the 

 base, 2-8 cm. long; flower-clusters spiked, the spikes 2-13 cm. long; bracts small; 

 bractlets subulate; calyx densely puberulent. the upper teeth about one-half the 

 length of the tube; corolla nearly white, or pale purple, dark-dotted, puberulent 

 without, 10-12 mm. long, the broad middle lobe of its lower lip crenulate. In 

 waste places, N. B. and Quebec to S. Dak., Va. and Kans. Nat. from Europe. 

 July-No v. 



10. GLECOMA L. 



Low creeping herbs, with long-petioled nearly orbicular or reniform crenate 

 leaves, and blue or violet flowers in small axillary verticillate clusters. Calyx 

 oblong-tubular, 15-nerved, oblique, not 2-lipped, unequally 5-toothed. Corolla- 

 tube exserted, enlarged above, the limb 2-lipped; upper lip erect, 2-lobed or 

 emarginate; the lower lip spreading, 3-lobed, the middle lobe broad, emarginate. 

 Anther-sacs divergent. Nutlets ovoid, smooth. [Greek name for thyme, or 

 pennyroyal.] About 6 species of Europe and Asia. 



i. Glecoma hederacea L. GROUND IVY. GILL-OVER-THE-GROUND. (I. 

 F. f. 3095.) Perennial, pubescent, the creeping stems sometimes 4.5 dm. long. 

 Lower petioles commonly longer than the leaves; leaves 14 cm. in diameter; 

 clusters few-flowered, the flowers 1.4-2 cm. long, short-pedicelled; bractlets subu- 

 late, shorter than the calyx; calyx puberulent, its teeth acute or lanceolate-acumi- 

 nate; corolla-tube 2-3 times as long as the calyx; upper pair of stamens much 

 longer than the lower. In waste places, woods and thickets, Newf. to Minn., Ga. 

 and Kans. March-May. 



xi. DRACOCEPHALUM L. 



Herbs, with blue or purple flowers in axillary and terminal bracted clusters. 

 Calyx tubular, 15 -nerved, 5-toothed, or 2-lipped with the 3 upper teeth more or less 

 united. Corolla expanded above, its limb 2-lipped; upper lip erect, emarginate; 

 lower lip spreading, 3-lobed, the middle lobe sometimes 2-cleft. Anthers 2-celled, 

 the sacs divaricate. Nutlets ovoid, smooth. [Greek, dragon-head.] About 35 

 species, of the northern hemisphere. 



Corolla scarcely exceeding the calyx ; clusters mostly terminal, dense. 



i. D. parviflorum, 

 Corolla 2-3 times as long as the calyx; clusters mostly axillary. 2. Z>. Moldavica. 



1. Dracocephalum parviflorum Nutt. AMERICAN DRAGON-HEAD. (I. F. 

 f. 3096.) Annual or biennial; stem 1.5-5 dm. high. Leaves lanceolate, ovate, or ob- 

 long, slender-petioled, serrate, or the lower incised, thin, 2-8 cm. long; clusters, 

 many-flowered, in dense terminal spikes, and sometimes also in the upper axils; 

 bracts ovate to oblong, pectinate with awn-pointed teeth; upper tooth of the calyx 

 ovate-oblong, longer than the narrower lower and lateral ones, all acuminate; corolla 

 light blue, scarcely longer than the calyx. In dry gravelly or rocky soil, N. Y. 

 and Ont. to Minn., Alaska, and in the Rocky Mts. to Ariz, and N. Mex. May 

 Aug. 



2. Dracocephalum Moldavica L. MOLDAVIAN DRAGON-HEAD. (I. F. f. 

 3097.) Annual, puberulent; stem 3-8 dm. high. Leaves oblong or linear-oblong, 

 dentate or somewhat incised, obtuse, 2-5 cm. long, clusters loose, few-flowered, 

 mostly axillary; bracts narrowly oblong, usually shorter than the calyx, deeply 

 pectinate with aristate teeth; pedicels 4-8 mm. long; calyx slightly curved, the 2 

 lower teeth somewhat shorter than the 3 broader equal upper ones ; corolla 2-3 

 times as long as the calyx. In a canon near Spring View, Neb. Also in northern 

 Mex. Introduced from Europe. June-Aug. 



