Lamium LABIATAE Stachys 



meaning " throat ", referring to the ringed corolla.) 



Key to the Species 



Tube of corolla long-exserted from the calyx: plants glabrous or 

 pubescent. 



Lvs. petiolate, ovate, cordate : fls. white 1 . L. album 



Lvs. sessile and clasping the stem: fls. red 2. L. amplexicaide 



Tube of corolla only slightly, if at all, exserted from the calyx: lvs. 

 petiolate; the lower ovate-lanceolate; the upper lanceolate: plant 

 densely villose 3 . L. chinense 



1. Lamium album Linn. |ff[ff (Hsu Tuan; to Splice) (G.M.1230). Erect perennial, to 

 0.8m.; fls. white, IV-V. Eurasia, Africa; locally in An., Che., Hun., Hup., Ki., 

 Ku. Moist shade. 



2. Lamium amplexicaule Linn. \'§MM (Fo Tso Ts'ao; Buddha's-shrine Herb) (G.M. 

 1229). Erect annual, to 4 dm.; fls. purplish red, III-IV. Eastern Asia; locally in 

 Che., Hup., Ki., Ku. Roadsides. 



3. Lamium chinense Benth. (DC. P. 12:512). Erect herb, 2-4 dm. high. Japan, Formosa, 

 China; locally in Che., Hup., Ki. Woodland. 



10. Leonurus Linn. Motherwort f?|ft|| (Ch'ung Wei Shu) 

 Stout erect herbs with palmately incised or dentate lvs. and small white or pink 

 fls. in dense axillary clusters; calyx 5-nerved; the teeth spiny; upper lip of the corolla 

 densely white woolly-hairy; stamens 4; anthers 2-celled, ovate; style lobes equal or 

 nearly so: nutlets 3-angled, truncate at the apex, smooth. 10 species, in Eurasia; 2 in 

 China. (From the Greek terms meaning "a lion's tail ".) 



Key to the Species 

 Lvs. few-lobed or entire: fls. 1.5-2 cm. long; upper lip of the corolla 



notched 1 • £• macravth us 



Lvs. deeply and sharply multicleft, usually with three main segments: 



fls. smaller; upper lip of the corolla entire 2. L. sibiricus 



1. Leonurus macranthus Maxim. WW< (Tsan Ts'ai; Carved Herb) (Mak.F.175). Stout 

 annual, to Ira.; fls. pink or red, VIII-X. Northeastern Asia; locally in Hon., 

 Hup., Ku. Roadsides. 



2. Leonurus sibiricus Linn. iil-l'X (I Mu Ts'ao) (M.F.412). Herb, to 1.8m.; fls. pink 

 or red, V-IX. Eastern Asia, North America; locally in An., Che., Ki., Hup., Ku. 

 Roadsides. Fig. 322. 



11. Stachys Linn. Hedge Nettle tREK (Shui Su Shu) 

 Herbs or subshrubs with crenate or serrate lvs. and fls. in terminal or axillary 

 spikes or racemes; calyx 5-10-nerved, with 5 nearly equal sharply pointed teeth; corolla 

 usually with a ring of hairs inside; stamens 4, the upper pr. shorter; style lobes equal 

 or nearly so: nutlets ovoid, with rounded apex. 160 species, in north temperate regions; 

 5 in China. (From the Greek term meaning "a spike".) 



Key to the Species 

 Lf. blades ovate, acute or acuminate, petiolate, 3-5 x 1.8-3 cm., pilose: 



336 



