LABIATAE. 39 



2 cm. long; heads of flowers roundish, peduncled, terminal and from the upper 

 axils; calyx glabrous, its teeth triangular-subulate. 

 In wet places, introduced from Europe. 



427. MICROMERIA. 



Low sweet-odorous plants; flowers small, in the axils of the 

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

 gibbous, about equally 5-toothed; corolla short, distinctly 2- 

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

 hooded, the lower spreading, 3-parted; stamens 4, the lower 

 pair longer. 



Micromeria chamissonis (Benth.) Greene. Yerba Buena. Perennial, 

 somewhat pubescent, with slender trailing stems, 30-60 cm. long; leaves 

 orbicular or ovate, obtuse, rounded or subcordate at base, coarsely dentate or 

 subentire, 6-25 mm. long; petioles short; flowers solitary, axillary; pedicels 

 slender, 2-bracted near the base; calyx 3-4 mm. long, the teeth triangular; 

 corolla white or purplish, 8 mm. long, its tube exceeding the calyx. 



Common in open woods; the balsamic odor pleasant. 



428. MADRONELLA. 



Erect woody perennials, with entire leaves and small purple 

 or white flowers in terminal heads which are subtended by broad 

 thin bracts; calyx tubular, 5-toothed, not 2-lipped; corolla 2- 

 lipped, the upper lip 2-cleft, the lower 3-cleft; stamens 4, the 

 lower pair the longer; anther-cells at length divergent. 



Madronella discolor Greene. Puberulent; stems woody, tufted, 20-40 cm. 

 high; leaves ovate, firm, green above, pale beneath, entire, 2-3 cm. long, short- 

 petioled; inflorescence a dense head; bracts broadly ovate, thin, more or less 

 purple tinged; calyx-teeth lanceolate, hairy; corolla pale violet, 6-8 mm. long. 



On warm slopes at the base of Mount Rainier. 



429. SCUTELLARIA. SKULLCAP. 



Annual or perennial herbs, sometimes woody not aromatic; 

 flowers in axillary or terminal racemes or solitary in the axils of 

 leaves or bracts; calyx bell-shaped in flower, 2-lipped, with a 

 gibbous protuberance on the upper side, splitting to the base at 

 maturity, the upper lip at length usually falling away; corolla 

 with an elongated curved ascending tube, dilated at the throat, 

 2-lipped, the upper erect, arched or galeate; stamens 4, ascending 

 under the upper corolla-lip, the lower pair longer. 



Flowers small, in axillary or terminal racemes. 5. lateriflora. 



Flowers larger, solitary in the leaf axils. 



Lower lip of corolla not villous. S. galericulata. 



Lower lip of corolla villous within. 



Corolla 14-20 mm. long; leaves oblong, obtuse at 



each end. S. antirrhinoides. 



Corolla 16-25 mm. long; upper leaves linear or nar- 

 row, acute at base. 5. angustifolia. 



