C>'2C) LABIAT.E. (MINT FAMILY.) 



1. M. vulgare, L. Woolly; stems branching at the base, ascending; 

 leaves petioled, ovate or roundish, crenate, the floral ones smaller, but longer 

 than the capitate many-flowered whorls ; calyx-teeth 10, recurved-spreading ; 

 corolla small, white. — Waste ground and road-sides. Introduced. — Steins 

 l°-2°high. 



25. LEONOTIS, R. Brown. 



Calyx tubular, 10-nerved, incurved, unequally 8 - 10-toothed ; the teeth 

 straight, spiny, the upper one largest. Corolla slender, 2-lipped ; the upper 

 lip long, arching, entire, the lower very short, 3-clcft, spreading. Stamens 4, 

 ascending under the upper lip : anther-cells diverging. Nutlets S-angled, trun- 

 cate. — Tall herbs, with very large globose whorls in the axils of the upper 

 leaves Flowers yellow or scarlet. 



1 . L. nepetaefolia, R. Br. Annual ; stem tomcntose, simple or branched ; 

 leaves remote, long-petioled, broadly ovate, crenate, the floral ones lanceolate; 

 whorls 1 - several ; calyx 8-toothed ; corolla villous, scarlet. — Waste grounds, 

 Georgia and Florida. June -Aug. Introduced. — Stem 1°- 6° high. Whorls 

 l'-2' in diameter. Corolla 1' long. 



26. LEONURUS, L. Motherwort. 



Calyx top-shaped, 5-nerved, 5-toothed, the teeth spiny and at length spread- 

 ing Corolla 2-lipped; the upper lip entire, the lower spreading, 3-lohed, with 

 the middle lohe obcordate. Stamens 4, ascending : anther-cells parallel, naked. 

 Nutlets 3-angled, truncate. — Herbs, with incisely lobed leaves; the floral ones 

 longer than the dense whorls. Bracts subulate. 



1. L. Cardiaca, L. Stem (2° -4° high) square, pubescent; leaves long- 

 petioled, the lower ones round-cordate, palmately lobed and toothed ; the floral 

 ones wedge-shaped, 3-cleft toward the apex; whorls distant, 6-15-flowered j 

 corolla villous, purplish, spotted with brown in the throat. — Waste places. 



Introduced. June- July. 



27. STACHYS, L. Hedge-Nettle. 



Calyx tubular-bell-shaped, 5- or 10-nerved, 5-toothcd ; the teeth equal, or the 

 upper one larger, more or less spiny (in our species), spreading in fruit. Co- 

 rolla hairy within, 2-lipped ; the upper lip erect, the lower spreading, 3-lobed, 

 with the middle lobe much larger. Stamens 4, ascending : anthers 2-celled. 

 Nutlets nut truncate. — Chiefly hairy or hispid herbs, with few-flowered whorls 

 in terminal racemes. 



* Perennial, 



I. S. aspera, Michx. Stem erect, with the angles rough with recurved 



bristly hairs, rarely si thish ; leaves slinrt-petinled, ovate-oblong Or OVBte- 



lanccolate, acute, senate, rounded at the base, Bmooth, or sprinkled with hairs 

 above; the floral ones longer than the calyx j whorls 6 - 10-flowered, the lower 

 ones distant ; calyx-teeth spine-pointed. (S. hispida, Punk. 8. tenuifolia, Wiild.) 



