120 LABIATAE, Vo. IIT. 
1. Leonurus Cardiaca L. Motherwort. 
Fig. 3607. 
Leonurus Cardiaca L. Sp. Pl. 584. 1753. 
Perennial, puberulent; stem rather stout, strict, 
commonly branched, 2°-5° tall, the branches 
straight and ascending. Leaves membranous, 
slender-petioled, the lower nearly orbicular, pal- 
mately 3-5-cleft, 2-4 broad, the lobes acumi- 
nate, incised or dentate; upper (floral) leaves 
narrower, oblong-lanceolate or rhombic, 3-cleft, 
or the uppermost merely 3-toothed; flower-clus- 
ters numerous, exceeded by the petioles; calyx- 
teeth lanceolate, subulate, somewhat spreading, 
nearly as long as the tube; corolla pink, purple 
or white, 3-5” long, its tube with an oblique 
ring of hairs within, its upper lip slightly con- 
cave, densely white-woolly without, the lower lip 
mottled; anther-sacs parallel. 
In waste places, Nova Scotia to North Carolina, 
South Dakota, Montana, Kansas and Utah. Na- 
turalized from Europe. Native also of Asia. Also 
called cowthwort. Lion’s-ear. June—Sept. 
2. Leonurus sibiricus L. Siberian Mother- 
wort or Lion’s-tail. Fig. 3608. 
Leonurus sibiricus L. Sp. Pl. 584. 1753. 
Biennial, puberulent or glabrate; stem stout, 
branched, 2°-6° high, the branches slender. Leaves : ate 
long-petioled, deeply 3-parted into ovate or lan- WN 
ceolate, more or less cuneate, acute or acuminate Ne 44 
deeply cleft and incised segments, the lobes lan- NX ine? 
ceolate or linear, acute; lower leaves sometimes \WZ3% 
6’ wide, the uppermost linear or lanceolate, slightly alas 
arched; anther-sacs divergent. 
In waste and cultivated soil, southern Pennsylva- 
nia and Delaware. Bermuda. Naturalized from 
eastern Asia. Widely distributed in tropical Amer- 
ica as a weed. May-Sept. 
toothed or entire; clusters numerous, dense, usu- h \ 
ally all axillary; calyx campanulate, 3” long, A\‘% “i > 
glabrous or minutely puberulent, its bristle-shaped WWW 
teeth slightly spreading, shorter than the tube; WF 
corolla purple or red, densely puberulent without, 
4-6” long, its tube naked within, the upper lip 
3. Leonurus Marrubiastrum L. Hoar- 
hound Motherwort or Lion’s-tail. 
Fig. 3609. * 
Leonurus Marrubiastrum L. Sp. Pl. 584. 1753. 
Biennial, puberulent or pubescent; stem stout, 
branched, 2°-5° high. Leaves petioled, ovate 
or ovate-oblong, acute or obtuse at the apex, 
narrowed at the base, coarsely crenate or in- 
cised-dentate, 1’-3’ long, 3’-13’ wide, the upper 
narrower; flower-clusters dense, numerous, 
axillary; calyx finely puberulent or glabrate, 
its bristle-shaped somewhat spreading teeth 
mostly shorter than the tube; corolla nearly 
white, glabrate, about 4” long, its tube scarcely 
exceeding the calyx, naked within, its lower 
lip ascending., 
In waste places, southern Pennsylvania and 
Delaware. Recorded from New Jersey. Natural- 
ized from Europe. Native also of Asia. June- 
Sept. 
