790 FLORA. 



ciliate, the outer smooth, larger. Nutlets ovoid, slightly flattened, smooth. [Greek, 

 weasel-like, j About species, of Europe and Asia. 



Plant puberulent ; leaves linear to lanceolate. I. G. LadanuiM 



l'lant hispid; leaves ovate. 2. G. Tetrahit. 



i. Galeopsis Lddanum L. Red Hemp-nettle. Ironwort. (I. F. f. 3106.) 

 Puberulent; stem 1.5-5 dm. high. Leaves linear, oblong, or lanceolate, mostly 

 short-petioled, acute at both ends, dentate, or nearly entire, 2-5 cm. long; flower- 

 clusters mainly axillary; corolla 12-16 mm. long, red or purple to white and varie- 

 gated. In waste places, N. B. to Mich, and N. J. Adventive or nat. from Europe. 

 July-Oct. 



2. Galeopsis Tetrahit L. Hemp-nettle. Hemp Dead Nettle. (I. E. f. 

 3107.) A coarse rough-hairy herb, the stem 3-9 dm. high, swollen under the 

 joints. Leaves ovate, membranous, slender-petioled, acuminate, coarsely dentate, 

 5-13 cm. long ; flower-clusters axillary, or in a short leafy-bracted spike ; corolla 

 16-25 mm. long, pink or pale purple variegated with white. In waste places, 

 Newf. to Alaska, N. Car. and Mich. Nat. from Europe. June-Sept. 



17. LEONURUS L. 



Tall herbs, with palmately cleft, parted or dentate leaves, and small white or 

 pink flowers verticillate in dense axillary clusters. Calyx tubular-campanulate, 

 5-nerved, nearly regular and equally 5-toothed, the teeth rigid, subulate or aristate. 

 Corolla-limb 2-lipped; upper lip erect, entire; lower lip spreading or deflexed, 

 3-lobed, the middle lobe broad, obcordate or emarginate. Anthers 2-celled, the' 

 sacs mostly parallel. Nutlets 3-sided, smooth. [Greek, lion's-tail.] About 10 spe- 

 cies, of Europe and Asia. 



Lower leaves palmately 2-5-cleft, the upper 3-cleft. 1. L. Cardiaca. 



Leaves deeply 3-parted, the segments cleft and incised. 2. L. Sibiricus. 



Leaves coarsely dentate or incised-dentate. 3. L. Marrubiastrum. 



I. Leonurus Cardiaca L. Motherwort. (I. F. f. 3108.) Perennial, 

 puberulent ; stem 6-15 dm. tall, the branches straight and ascending. Leaves 

 slender-petioled, the lower nearly orbicular, 5-10 cm. broad, the lobes acuminate, 

 incised or dentate; upper leaves oblong-lanceolate or rhombic, 3-cleft, or the 

 uppermost merely 3-toothed; flower-clusters exceeded by the petioles; corolla 

 pink, purple or white, 6-10 mm. long, its tube with an oblique ring of hair; 

 within, its upper lip slightly concave, densely white-woolly without, the lower lip 

 mottled; anther-sacs parallel. In waste places, N. S. to N. Car., S. Dak. and 

 Kans. Nat. from Europe. June-Sept. 



2. Leonurus Sibiricus L. Siberian Motherwort or Lion's-tail. (I. F. 

 f. 3109.) Biennial, puberulent or glabrate; stem 6- 18 dm. high. Leaves long- 

 petioled, 3-parted into ovate or lanceolate, acute or acuminate, cleft and incised 

 segments, the lobes lanceolate or linear, acute;, the uppermost linear or lanceolate; 

 clusters dense, usually aV» axillary ; calyx campanulate, 6 mm. long, glabrous or 

 minutely puberulent; corolla purple or red. densely puberulent without. 8-12 mm. 

 long, its tube naked within; anther sacs divergent. In waste and cultivated soil, 

 Penn. and Del. Nat. from eastern Asia. May-Sept. 



3. Leonurus Marrubiastrum L. Hoarhound Motherwort or Lion's- 

 lAIL, (I. F. f. 3110.) Biennial, puberulent or pubescent; stem 6-15 dm. hio h. 

 Leaves petioled, ovate or ovate oblong, 2-8 dm. long, the upper narrower; flower- 

 clusters axillary; calyx finely puberulent or glabrate; corolla nearly white, glabrate, 

 about 8 mm. long, its tube scarcely exceeding the calyx, naked within. In waste 

 places, N. J. (according to S. Watson); Penn. and Del. Nat. from Europe. June- 

 Sept. 



18. LAMIUM L. 



Mostly difiuse herbs, with crenate dentate or incised, usually cordate leaves, and 

 rather small Ih.wers. verticillate in axillary and terminal clusters. Calyx tubular- 

 campanulate, about 5-nerved, 5-toothed, the teeth equal or the upper ones longer. 

 Corolla- limb 2-lipped; upper lip concave, erectj usually entire; lower lip spread 

 ing, 3-cleft, the middle lobe emarginate, contracted at the base. Anthers 2-celled, 



