L.VBIAT .1-. 261: 



21. PHYSOSTEGIA, Benth. False Dragon-head: 



Gr. j)/(«v c a, a bladder, and strgo, t) con-r-: ~.n account ofTho inflated calyx aui- 

 corolla. 



Calyx nearly equally 5-toothed, obscurely JVC-nerved: 

 after flowering inflated- bell-shaped. Corolla 2 -lipped, with 

 a much exsertcd long tube and inflated throat-; upper lip 

 nearly erect, somewhat concave ; lower /<))■ spreading, 8- 

 lobed, the lateral lobes small, the middle broad and rounded. 

 Stamens -±, ascending under the upper lip; anthers ap- 

 proximate. — Perennial smooth Kerbs, witfi upright slender 

 stems, sessile /cares, and large slwwy Jtesk^eolored and purplish 

 Jfnwers, opposite, in simple or panidtd terminal Icajless, crowded! 

 spikes . 



P. VlRGlNlANA, Benth. Llons-licart. Drar/on-liead. 



Leaves varying from lance-lineer to" ovatelanceolat'\ serrate: calyx acutely and 

 3lrao-t equally o toothed ; t than the calyx, ovate, pointed. 



Moist plac- - Bi iftkly, Ang. $ 1 1 variable iu height, 1 to 4 feet high. 



Leaves opposite, closely seesile,4 :o "> inches long, -"J inch wide, with remote shallow 

 teeth", of a shining dark green. Flmoert in Crowed sfrikes, large pale purple j 

 about 1 inch long, spi tted inside. 



22. LASITlTtf, Linn. Dead-Nettle. 



Gr. lut'mos, die throat; in allusion to the r'ngent corolla. - 



Calyx tubular-bell-shapcd, about 5 nerved, with 5" nearly 

 equal serulate teeth. Corolla dilated at the throat ; upper 

 Up ovate or oblong, arched, narrowed at the base; lower lip 

 with the middle lobe broad, notched at the apex, contracted 

 at base. Stamens 4, ascending under the upper lip; an- 

 thers approximate in pairs. — Herbs, decumbent at base, with 

 the lowest leaves small and long peUoIed, the middle ones cordate arid 

 doubly toothed, the Jloral neurit/ sessile, and axillary ivhorled clusters 

 of pa rp IU h jlo wet*. 



L. amplexicaule, L. Common Dead-Xcttle. Hen-bit. 



Leave.? rounded; deeply crenate-toothed or entire, the upper clasping; lower whorl* 

 e, the aj per crowded ; corolla elongated, the upper lip bearded, the lowti 

 gp< tted ; lattral lefrte truncate. 



Waste and cultivated grounds, introclueed. BiennieL May — Nov. A small 

 slender herb, with ascending stems, several from the same root, 8 to 10 inches high, 

 with opposite, short, broad hairy leaves. Flowers in dense whorls, purple, downy 

 SoroUa-tube touch asserted, the lower lip spotted with white. 



23. LEOXURUS, Linn. Motherwort. 



Gr. leon, a lion, and oura, a tail, i. e. Lion's-tail. 



Calyx top-shaped, 5-nerved, with nearly equal subulate 

 teeth. Corolla 2 lipped ; upper lip oblong, eatire, sonie- 

 •vhat arched; lower lip spreading, 3-lobed ; the middle lobe 



