Vol. III.] 



MINT FAMILY. 



93 



i. Leonurus Cardiaca L. Mother- 

 wort. (Fig. 3108.) 

 Leonurus Cardiaca L,. Sp. PI. 5S4. 1753. 



Perennial, pubernlent; stem rather stout, 

 strict, commonly branched, 2-5 tall, the 

 branches straight and ascending. Leaves 

 membranous, slender-petioled, the lower 

 nearly orbicular, palmately 3-5-cleft, v'-if 

 broad, the lobes acuminate, incised or dentate; 

 upper (floral) leaves narrower, oblong-lanceo- 

 late or rhombic, 3-cleft, or the uppermost 

 merely 3-toothed; flower-clusters numerous, 

 exceeded by the petioles; calyx-teeth lanceo- 

 late, subulate, somewhat spreading, nearly as 

 long as the tube; corolla pink, purple or white, 

 o//_-// long, its tube with an oblique ring of 

 hairs within, its upper lip slightly concave, 

 densely white-woolly without, the lower lip 

 mottled; anther-sacs parallel. 



In waste places, especially about dwellings, 

 Nova Scotia to North Carolina, Minnesota and 

 Nebraska. Naturalized from Europe. Native al- 

 so of Asia. Also called Cowthwort. June-Sept. 



2. Leonurus Sibiricus L. Siberian 

 Motherwort or Lion's-tail. (Fig. 3109.) 

 Leonurus Sibiricus L. Sp. PL 584. 1753. 



Biennial, puberulent or glabrate; stem stout, 

 branched, 2-6 high, the branches slender. 

 Leaves long-petioled, deeply 3-parted into ovate 

 or lanceolate, more or less cuneate, acute or 

 acuminate deeply cleft and incised segments, 

 the lobes lanceolate or linear, acute; lower 

 leaves sometimes 6' wide, the uppermost linear 

 or lanceolate, slightly toothed or entire; clus- 

 ters numerous, dense, usually all axillary; 

 calyx campanulate, 3" long, glabrous or mi- 

 nutely puberulent, its bristle-shaped teeth 

 slightly spreading, shorter than the tube; cor- 

 olla 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. Naturalized from eastern Asia. 

 Widely distributed in tropical America as a weed. 

 May-Sept. 



3. Leonurus Marrubiastrum L. 

 Hoarhound Motherwort or 

 Lion's-tail. (Fig. 31 10.) 

 Leonurus Marrubiastrum L. Sp. PI. 584. 1753. 



Biennial, puberulent or pubescent; stem 

 stout, branched, 2-5 high. Leaves peti- 

 oled, ovate or ovate- oblong, acute or obtuse 

 at the apex, narrowed at the base, coarsely 

 crenate or incised-dentate, i / -3 / long, y 2 '- 

 T-Yz' wide, the upper narrower; flower-clus- 

 ters dense, numerous, axillary; calyx finely 

 puberulent or glabrate, its bristle-shaped 

 somewhat spreading teeth mostly shorter 

 than the tube; corolla nearly white, glabrate, 

 about \" long, its tube scarcely exceeding the 

 calyx, naked within, its lower lip ascending. 



In waste places, New Jersey (according to S. 

 Watson), southern Pennsylvania and Delaware. 

 Naturalized from Europe. Native also of Asia. 

 June-Sept. 



