558 LABIATjE lamium 



STACHYS 



in, its upper lij) slightly concave, densely white-woolly outside. In sandy 

 places: naturalized from Europe. 



20 LAMIUM L. Sp. 579. 



Annual or perennial herbs with crenate dentate or incised 

 usually cordate leaves and small flowers verticillate in axillar)' 

 and terminal clusters. Calyx tubular-campanulate, about 5- 

 nerved, 5-toothed, the teeth equal, or the upper ones larger. 

 Tube of the corolla commonly longer than the calyx, its limb 

 bilabiate upper lip concave, erect, usually entire, narrowed at the 

 base : lower lip spreadingj 3-cleft, the middle lobe emarginate, 

 contracted at base, the lateral ones sometimes each with a tooth- 

 like appendage. Stamens 4, the anterior pair longest. Anthers 

 2-celled. the cells divaricate, often hirsute on the back. Nutlets 

 smooth or tuberculate. 



L. AMM.KXiCAUiE L. Pp. 579. Sparingly pubescent annual or biennial; 

 stems slender, weak, branched from the base and often from the lower 

 axils also fi-18 inciies long: leaves orbicular or nearly so coarsely crenate, 

 6-18 lines broad, rounded at the apex ; the lower slender-petioled, mostly 

 cordate at base ; the upper sessile and more or less clasping : flowers rather 

 few, in axillary and terminal clusters: calyx pubescent, its erect teeth 

 nearly as long as the tube corolla purplish or red, 6-8 lines long, its tube 

 very slender, the lateral lobes of the lower lip very small, the middle lobe 

 spotted, the upper lip somewhat pubescent. In fields and waste places: 

 naturalized from Europe. 



21 STACHYS L. Sp. 580. 



Perennial or annual herbs with square stems and small or rather 

 large flovi^ers loosely verticillate in terminal dense or interrupted 

 spikes often also in the upper axils. Calyx mostly campanulate, 

 5-10-nerved. 5-toothed, the teeth nearly equal in our species. 

 Corolla with narrow tube and strongly bilabiate limb: upper lip 

 erect, concave, entire or emarginate : the lower one S-cIeft, the 

 middle lobe broader than the lateral ones, sometimes 2-lobed. 

 Stamens 4, the anterior pair longest, sometimes deflexed or twisted 

 after anthesis. Anthers approximate in pairs, 2-celled, the cells 

 mostly divergent. • Nutlets ovoid or oblong. 



S. pycnantha Benth. PI. Hartw. 331. Soft-pubescent with somewhat 

 fulvous hairs: roofstock creeping, perennial: stems rather stout, 1-3 feet 

 high, very leafy: leaves oblong-ovate, obtuse or the upper ones acute at 

 the apex, crenate-dentate, subcordate, 1-4 inches long, on short and stout 

 petioles ; floral leaves all reduced to small bracts of the dense oblong or 

 cyliiidraceouB spike, each subtending about 3 flowers : calyx-teeth deltoid, 

 mucronulate, very hirsute, fully equalling the tube of the corolla: upper 

 lipjof the corolla strongly bearded. In sandy fields. Hood River Oregon to 

 California. 



S. vpstita., , Soft-pubescent with whitish hairs: rootstoCk slender, 

 creeping, perennial: stems rather slender, 1-3 feet high, branched above: 

 leaves oblong-ovate subcordate, crenate-dentate, obtuse or acutish at the 

 apex, 1-3 inches long, mostly slender-petioled: flowers 1-3 in each axil of 

 the small lanceolate bracts : calyx campanulate, its deltoid mucronulate 

 teeth nearly as long as the tube, strongly hirsute: corolla 6-8 lines long, 

 the slender tube longer than the calyx, upper lip sparingly bearded. In 



