558 LABIATZ LAMIUM 
STACHYS 
in, its upper lip ‘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 axillary 
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 concaye, erect, usually entire, narrowed at the 
base: lower lip spreading, 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. saMitexicatiE L. Sp, 579. Sparingly pubescent annual or biennial: 
stems slender, weak, branched from the base and often from the lower 
axils also 6-18 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 flowers 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 3-cleft, 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. Pl. Hartw. 331. Soft-pubescent with somewhat 
fulvous hairs: rootstock 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--+ inches long, on short and stout 
petioles; floral leaves all reduced to small bracts of the dense oblong or 
cylindraceous spike, each subtending about 3 flowers: calyx-teeth deltoid, 
mucronulate, very hirsute, fully equalling the tube of the corolla: upper 
lip*of the corolla strongly bearded. In sandy fields, Hood River Oregon to 
California. 
S. vestita. 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 
