32G LABIATE. (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. Stems 

 l-2high. 



25. LEONOTIS, R. BROWN. 



Calyx tubular, 10-nerved, incurved, unequally 8 - 1 0-toothed ; the teeth 

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

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

 ascending under the upper lip : anther-cells diverging. Nutlets 3-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 tomentose, 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 

 1' - 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-lobed, with 

 the middle lobe 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 - 1 5-flowered ; 

 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-toothed; 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-cclled. 

 Nutlets not truncate. Chiefly hairy or hispid herbs, with few-flowered whorls 

 in terminal racemes. 



* Perennial. 



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

 bristly hairs, rarely smoothish ; leaves short-petioled, ovate-oblong or ovate- 

 lanceolate, acute, serrate, rounded at the base, smooth, or sprinkled with hairs 

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

 ones distant ; calyx-teeth spine-pointed. (S. hispida, Pursh. S. tenuifolia, Willd) 



