ORDER 91. -LABIATE. 249 



cending, lower pair longer, anthers approximating by pairs. Verticils 2- 

 10-flowered, approximating in a terminal raceme. 



Our species are much alike, yet easily distinguished. They have stems mostly hi^>id, 

 leaves elliptic-lanceolate, crenate-serrate, narrowed to an abrupt base, and corolla pale- 

 purple with deeper spots. Summer. 



* Plants 2f, leaves smooth. Calyx teeth divaricately spreading Nos. 1, 2 



* Plants hispid or hairy. a U Calyx teeth spinescent. Lvs. subsessile Nos. 3, 4 



a Calyx teeth acute. Leaves petiolate Nos. 5, C 



1 S. liyssopifolia MX. Leaves sessile, linear-lanceolate, serrulate, small (120 ; 



calyx teeth half as long as the 7" corolla. Mass, to Mo., and S. 6 12'. 



2 S. glabra Rid. Leaves all petiolate, serrate ; calyx teeth much spreading, as long 



as the corolla tube. Woods, N. Y. to Mich., and S. 15' 3f. Racemes 37'. 



3 S. palustris L. Stout, hirsute ; leaves some pointed, large, hoary beneath ; corolla 



twice longer (7 8") than the calyx teeth. Moist shades, Can. to Car. 1 4f. 



4 S. aspera MX. Slender, hispid ; leaves pointed, sharp-serrate ; calyx glabrous, 



teeth hispid, equalling the corolla tube. Damp soils : common. 2f. Not leafy. 



5 S. cordata Rid. Stout, with large, pointed leaves, crenate-dentate ; calyx teeth 



triangular, much shorter than the corolla. U Shady banks, W. 2 5f. 



6 S. arvensis L. Weak, diffuse ; Ivs. ovate-cordate, obtuse ; bracts very short ; cal. 



teeth lanceolate ; corolla tube included, lips short. Waste grounds, N. : rare. 



42. BETONICA, Tourn. BETONY. Calyx tubular-bell-form, with 5 

 awn-like teeth. Cor. as in Stachys, but beardless inside. Stam. ascending 

 parallel beneath the galea. Style bifid. Lower leaves long petioled, cor- 

 date, all crenate. Verticils large, dense, in a terminal spike. 



1 B. officinalis L. Wood B. Spike interrupted at base ; flowers purple, cor. twice 



longer than calyx (7"), galea entire. Gardens, and escaped. If. Rare. Europe. 



2 B. GRANDIFLORA. Villous ; floral leaves clasping ; verticils separate ; corolla violet, 



large (15"), handsome, galea obcordate, glabrous. Gardens. 2f. Siberian. 



43. LEONURUS, L. MOTHER-WORT. Calyx 5-10-striate, 5-toothed, 

 teeth subspinescent. Upper iip of the corolla entire, hairy, concave, erect, 

 lower lip 3-lobed, the middle lobe obcordate. Stam. 4, ascending beneath 

 the upper lip. Mostly if . Verticils axillary. Flowers purplish. Summer. 



1 I*. Cardiaca L. Lvs. palmate-lobed, 3-fid, to lanceolate ; corolla longer than the 



calyx, a hairy ring within. About dwellings. 3 5f. Asia. 



2 L. marrnbiastrum L. Leaves oblong-ovate, coarsely cut-serrate ; cor. shorter 



than the calyx teeth, naked within. Waste grounds. 2 4f. Europe. 



44. MARRUBIUM, L. HOARHOUND. Cal. tubular, 5-10-striate, with 

 5 or 10 subequal teeth. Cor. upper lip erect, flattish or concave, entire or 

 bifid, lower lip spreading, 3-lobed, middle lobe broadest, emarginate, tube 

 included. Stam. included in the tube. if. Fte. in dense verticils, white. 

 FT. vulgare L. Hoary-pubescent; Ivs. roundish, ovate, crenate-dentate, downy canes- 

 cent beneath ; cal. of 10 setaceous, hooked teeth. Fields, &c. 1 2f. Jn.,Jl. Eur. 



45. LEONOTIS, Br. LION'S-EARS. Calyx 10-veined, apex incurved, 

 throat oblique, sub-10-toothed, upper tooth largest Cor. tube exserted, up- 

 per lip concave, erect, entire, lower short, spreading, trifid. Sta. 4, under 

 the galea, anth. in pairs. Vert, dense, with numerous lin. -subulate bracts. 

 L. nepetielolia Br. Erect, stout ; Ivs. thin, ovate, crenate, on slender petioles ; cal. 



teeth S, spinesccnt ; whorls very large ; cor. scarlet, 10". Fields, S. 4 7f. Afr. 



