280 T.ABIAT.E. 



smoothish ; teeth of the calyx ovate, somewhat obtuse. Hi/ssopus nepetoides 

 Linn. 



Woods. Can. to Virg. W. to Miss. July, Aug. ^.Stem 36 feet high, 



branched, yellowish green. Leaves pale-green, slightly pubescent beneath. 

 Flowers small, greenish-yellow, in terminal cyliridric spikes which are inte 

 rupted at base. Yellow Giant Hyssop. 



2. L. scrophidaricefolius Benth. : stem pubescent, with the angles obtuse ; 

 leaves ovate, acute, serrate-crenate, green on both sides, smooth above, 

 pubescent beneath ; teeth of the calyx lanceolate, acute. Hyssopus scro- 

 phularitzfoliiis Linn. 



Woods. N. Y. to Virg. W. to ffl._ July, Aug. %.Stem 35 feet high, 

 " >r, br 



mostly of a purple color, branched. Leaves often cordate at base, on pubescent 

 petioles. Flowers pale-purple, in terminal cylindric spikes which are inter- 

 rupted at base. Purple Giant Hyssop. 



18. NEPETA. Linn.C&t Mint. 



(Named, some say, from Nepi, a town in Italy, others, from Nepa, a scorpion, 

 for whose bite this plant was considered a cure. Hook. Brit. Fl.) 



Calyx tubular, 13 15-nerved, obliquely 5-toothed. Corolla 

 2 -lipped ; upper lip erect, emarginate or bifid ; lower 3-lobed, 

 middle lobe largest ; throat dilated ; tube slender below. Sta- 

 mens 4, ascending. 



1. N. Cataria Linn. : hoary-pubescent; stem erect, tall ; leaves oblong- 

 cordate, petiolate, acute, coarsely crenate, rugose ; whorls many-flowered, 

 upper ones crowded in a spike ; calyx half as long as the corolla. 



Old fields and cultivated grounds. N. S. June Aug. 1J.. Stems 24 feet 

 high, often several from the same root, downy and whitish. Leaves softly pu- 

 bescent and green above, canescent beneath. Flowers yellowish-white, tinged 

 and spotted with red. Introduced from Europe. 



Common Cat-mint. Catnep. 



2. N. Glechoma Benth. : stem procumbent, rooting at the base ; leaves 

 petiolate, cordate-reniform, rounded, crenate, somewhat hairy ; whorls few- 

 flowered, axillary; corolla three times as long as the calyx. Glechoma 

 hederacea Linn. 



Road sides, &c. N. S. May, June. 1\.. Stems about a foot long, slender, 

 with ascending branches. Flowers large, blue, in distant axillary whorls. In- 

 troduced from Europe. Ground Ivy. 



-19. DRACOCEPHALUM. Linn.- Dragon's Head. 



(From the Greek Spaicov a. dragon, and x^aXi?, a head; in allusion to the form 

 of the flowers.) 



Calyx tubular, 13 15-nerved, 5-toothed ; upper tooth broader 

 and often larger, the 3 upper sometimes approximated. Corolla 

 3 -lipped ; upper lip erect and emarginate ; lower spreading, 

 3-lobed. Stamens 4, ascending ; the lower pair shorter. 



D. parviflorum Nutt : stem erect, branched ; leaves ovate-lanceolate, 

 coarsely or incisely crenate or serrate, petiolate, green on both sides ; whorls 

 in a terminal capitate spike ; upper tooth of the calyx broad-ovate ; corolla 

 scarely longer than the calyx. 



