216 LABIATAE. 



gibbous, 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. 



Micromeria chamissonis (Benth.) Greene. Perennial, somewhat pu- 

 bescent, 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. Open woods, Thatuna 

 Hills, Idaho. Odor balsamic. 



320. 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 odoratissima (Benth.) Greene. Stems woody, tufted, 20-40 

 cm. high, puberulent throughout; leaves firm, green, entire, narrowly oblong, 

 2-3 cm. long, very short-petioled; inflorescence a dense head; bracts broadly 

 ovate, obtuse, thin, usually purple-tinged; calyx puberulent, the lanceolate 

 teeth hirsute; corolla pale violet, 6-8 mm. long. In sterile soil, Spokane 

 County, and in the Blue Mountains. Very fragrant. 



321. AGASTACHE. 



Tall perennial herbs; leaves ovate, serrate, petioled; flowers 

 small, in terminal spikes; calyx tubular-bell-shaped, 15-nerved, 

 oblique, 5-toothed, the upper teeth rather longer; corolla 2- 

 lipped, the tube about as long as the calyx, the upper lip nearly 

 erect, concave, 2-lobed, the lower somewhat spreading, 3-cleft; 

 stamens 4, exserted from the corolla; anther-cells parallel. 



Agastache urticifolia (Benth.) Rydb. Glabrous or nearly so, the erect 

 usually simple stems 50-150 cm. tall, tufted; leaves ovate, cordate, obtuse 

 or acute, coarsely dentate, green on both sides, 3-6 cm. long, short-petioled; 

 spikes terminal, stout, densely puberulent, 6-10 cm. long or sometimes with 

 smaller ones from the upper axils; calyx tubular-campanulate, the teeth lan- 

 ceolate, acuminate, purple-tinged; corolla violet-purple. Whole plant pleas- 

 antly scented. Low ground, not rare. 



322. NEPETA. 



Perennial herbs; calyx tubular, often incurved, obliquely 5- 

 toothed; corolla 2-lipped, dilated in the throat; the upper lip 

 erect, rather concave, notched or 2-cleft; the lower spreading, 

 3-cleft, the middle lobe largest, notched or entire; stamens 4, 

 ascending under the upper corolla-lip, the upper pair longer; 

 anther-cells divergent. 



