1030 LAMIACEAE 
notched. Stamens 4: filaments all anther-bearing : anthers 2-celled ; sacs mostly parallel. 
Nutlets 3-angled, smooth. 
Leaf-blades coarsely crenate-serrate : upper lipof the corolla scarcely longer than the lower. puberulent. 
1. L. Marrubiastrum. 
Leaf-blades 2-5-cleft : upper lip of the corolla much longerthan the lower, villous. 2. L. Cardiaca. 
1. Leonurus Marrubiastrum L. Biennial, puberulent or pubescent. Stems 5-15 
dm. tall, more or less branched : leaf-blades ovate to oblong-ovate, 2.5-7.5 em. long, crenate 
or incised-crenate, cuneately narrowed at the base, petioled: cymes dense, often numerous : 
calyx puberulent or glabrate; lobes subulate-setaceous, shorter than the tube: corolla 
white or nearly so, 7-8 mm. long ; tube glabrous within. 
In waste places, New Jersey and Pennsylvania to Florida. Summer and fall. 
2. Leonurus Cardiaca L. Perennial, more or less pubescent. Stems erect, 3-10 
dm. tall, simple or branching above: leaf-blades 2-10 cm. long, palmately cleft or incised 
or 3-cleft on the upper part of stem, the lobes acute, entire or sharply toothed or crenate : 
clusters few-flowered, sessile: calyx rigid, becoming about 5 mm. long, angled: lobes 
spine-like, 3 ascending, 2 erect-spreading : corolla pale purple or white, villous without, 
9-10 mm. long; tube swollen in middle, the upper lip as long as the tube, the lower lip 
reflexed : nutlets 2 mm. long, pubescent on top. 
In waste places and along roadsides, Nova Scotia to Minnesota, North Carolina and Nebraska. 
Naturalized from Europe. Spring to fall. 
19. LEONOTIS L. 
Annual or perennial caulescent herbs or shrubby plants. Leaves opposite: blades 
broad, toothed, petioled. Flowers in dense whorls. Calyx short-pedicelled: tube 10- 
nerved, oblique at the mouth : lobes 8-10, unequal, bristle-tipped. Corolla yellow, orange 
or scarlet, 2-lipped : tube dilated above, curved: upper lip erect, rather long: lower lip 
with 3 lobes, the middle lobe scarcely longer than the lateral. Stamens 4: filaments all an- 
ther-bearing : anthers 2-celled ; sacs diverging.  Nutlets 3-angled, smooth. 
1. Leonotis nepetaefólia R. Br. Annual, softly pubescent. Stems 3-20 dm. tall, 
simple or branched : leaf-blades ovate or ovate-deltoid, 4-12 cm. long, coarsely crenate, 
cuneate or subcordate at the base: clusters dense, 4—6 cm. in diameter: pedicels 1-2 mm. 
long: calyx puberulent, becoming at least 2 cm. Jong; tube reticulated above the middle ; 
lobes 8, awn-tipped : corolla scarlet or orange-yellow, 2-2.5 cm. long, villous-hirsute ; tube 
curved, the upper lip as long as the tube, the lower lip much shorter than the upper, with 
3 narrow lobes : nutlets 3 mm. long, sharply angled. 
In waste places, Tennessee to Florida and Louisiana. Also in the tropics. Summer and fall. 
20. STACHYS L. 
Annual or perennial caulescent herbs, with glabrous or variously pubescent foliage. 
Leaves opposite: blades entire or toothed, commonly petioled. Flowers in axillary clus- 
ters, the upper ones sometimes approximate or contiguous. Calyx mostly campanulate : 
tube 5-10-ribbed :.lobes 5, equal or nearly so. Corolla purple or white or rarely red or 
yellow, 2-lipped : upper lip erect, entire or notched : lower lip spreading, with 3 lobes, the 
middle lobe largest, entire or 2-lobed. Stamens 4: filaments all anther-bearing : anthers 
2-celled ; sacs mostly diverging. Nutlets blunt at the apex. 
Plants with annual or biennial roots. 
Lower lip of the corolla slightly surpassing the calyx: mature calyx 3-4 mm. long. cio 
Lower lip of the corolla much surpassing the calyx: mature calyx 5-6 mm. long. 2. 8. Drummo — 
Plants with perennial roots. 
Leaf-blades narrowed at the base. : 
Leek nina glabrous, entire or with shallow teeth: calyx-lobes glabrous at 
maturity. ssopifolia. 
Calyx-lobes subulate-tipped : leaf-blades entire or nearly so. 3. S. Ay. ues 
x dee not subulate-tipped : leaf-blades markedly but shallowly 4. S. lythroides. 
oothed. : ". i 
Leaf-blades pubescent, prominently serrate: calyx-lobes ciliate. 5. S. ambigua. 
Leaf-blades, all or some of them,fcordate or truncate at the base. 
A. Petioles less than 14 as long as the blades. 
Lower leaves with petioles but little longer than those of the upper. 
i i : x i the calyx. : 
Foliage copiously pubescent : cerolla-tube slightly longer than y 6. S. Nuti llii. 
Foliage glabrous or almost so: corolla-tube much longer than the calyx. 7. S. latidens. 
Lower leaves with petioles several times longer than those of the upper. 
2. Calyx-lobes merely aeute or acuminate, not awn-tipped. 
* Foliage of the inflorescence glabrous or bristly-pubescent. 8. S. tenuifolia. 
Infiorescence glabrous or nearly so. E S. E 
Inflorescence bristly-pubescent. 
