Flora of the Palouse Region 153 



broad, notched at the apex, contracted at the base; the lateral 

 lobes small, at the margin of the throat: stamens 4, ascending 

 under the upper lip; the lower pair longer. 



L. amplexicaule L. Biennial, branched from the base, sparingly pu- 

 bescent: stems simple, erect, 15-20 cm. high: lower leaves orbicular, coarsely 

 crenate, truncate or cordate at base, 1-2 cm. long, on petioles as long or 

 longer; upper sessile, half-clasping, rather distant: flowers sessile in axillary 

 and terminal clusters: calyx pubescent, the sharp teeth nearly as long as the 

 tube: corolla purple, the lower lip spotted, 12-15 nun. long. Sparingly intro- 

 duced along Snake River. 



256. STACHYS. 



Herbs, rarely undershrubs, not aromatic: calyx tubular-bell- 

 shaped, 5-10-nerved. equally 5-toothed or the upper teeth united 

 to form an upper lip: corolla not dilated at the throat, 2-lipped, the 

 tube about equalling the calyx; the upper lip concave, often arched, 

 erect or rather spreading, entire or nearly so; the lower usually 

 longer and spreading, 3-lobed, the middle lobe largest and nearly 

 entire: stamens 4, ascending under the upper lip, the lower pair 

 longer. 



S. palustris L. Perennial, erect, 30-60 cm. high, soft-pubescent through- 

 out or the stem short-hairy: leaves oblong or ovate-lanceolate, mostly ob- 

 tuse, crenate-serrate, rounded or cordate at the nearly sessile base, 5-10 cm. 

 long: spikes short-peduncled, the clusters rather close together, the lower 

 with leafy bracts; upper bracts lanceolate: calyx hairy, the tube campanu- 

 late, little longer than the subulate teeth: corolla pink-purple, 1 cm. long; 

 the upper lip pubescent; the tube equalling the calyx. Moist ground, rare 

 in our limits. 



257. MICROMERIA. 



L,ow sweet-odorous plants: flowers small, in the axils of the 

 leaves: calyx oblong or tubular, about 10 -nerved, terete, not gib- 

 bous, about equally 5-toothed: corolla short, distinctly 2-lipped; 

 upper lip flattish, neither concave nor hooded, entire or notched; 

 the lower spreading, 3-parted: stamens 4, the lower pair longer. 



M. douglasii Benth. Perennial, somewhat pubescent, with slender trail- 

 ing stems, 30-60 cm. long: leaves orbicular or ovate, obtuse, rounded or sub- 

 cordate at base, coarsely dentate, or subentire, 6-25 mm. long; petioles short: 

 flowers solitary, axillary; pedicels slender, 2-bracted near the base: cahx 

 3-4 mm. long, the teeth triangular: corolla white or purplish, S mm. long, 

 its tube exceeding the calyx. Open woods, Thatuna Hills. Odor balsamic. 



258. LYCOPUS. 



L,ow perennial herbs, glabrous or puberulent, not aromatic: 

 leaves sharply-toothed or pinnatifid: flowers small, mostly white, 

 in dense axillary whorls: calyx bell-shaped, scarcely longer than 



