120 



LABIATAE. 



VOL. III. 



i. Leonurus Cardiaca L. Motherwort. 

 Fig. 3607. 



Leonurus Cardiaca L. Sp. PI. 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 uppermort 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, us 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. PI. 584. 1753. 



Biennial, puberulent or glabrate; stem stout, 

 branched, 2-6 high, the branches slender. Leaves 

 long-petioled, deeply 3-parted into ovate or lan- 

 ceolate, more or less cuneate, acute or acuminate 

 deeply cleft and incised segments, the lobes lan- 

 ceolate or linear, acute; lower leaves sometimes 

 6' wide, the uppermost linear or lanceolate, slightly 

 toothed or entire ; clusters numerous, dense, usu- 

 ally all axillary; calyx campanulate, 3" long, 

 glabrous or minutely puberulent, its bristle-shaped 

 teeth slightly spreading, shorter than the tube; 

 corolla purple or red, densely puberulent without, 

 4"-6" long, its tube naked within, the upper lip 

 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. 



3. Leonurus Marrubiastrum L. Hoar- 

 hound Motherwort or Lion's-tail. 



Fig. 3609. 

 Leonurus Marrubiastrum L. Sp. PI. 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, i'-3' long, '-ii' 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. 



