SCROPHULARIACEAE. 325 



In moist places in woods, from the mouth of the Columbia River to Cali- 

 fornia. 



Mimulus moschatus Dougl. Musk Plant. Perennial, villous and shiny 

 viscid, musk-scented; stems weak, spreading, ascending or erect, 10-40 cm. high; 

 leaves oblong-ovate, denticulate, 2-5 cm. long, all petioled; peduncles shorter 

 than the leaves; calyx tubular-prismatic, 8-12 mm. long, the unequal teeth 

 acute; corolla pale yellow, spotted in the throat, about 2 cm. long. 



Common in moist places. 



Mimulus langsdorfii Donn. Perennial by short stolons, erect or decum- 

 bent, glabrous or puberulent, 15-60 cm. high, or depauperate plants much 

 smaller and dying after blooming; leaves several-nerved from the base, ovate, 

 obtuse or acute, rounded or subcordate at base, the lower long-petioled and 

 often with ragged lobes at base, the upper short-petioled or sessile; floral 

 leaves often cuneate; flowers in a raceme, the pedicels as long as or shorter than 

 the flowers; calyx in fruit 5-angIed and inflated, the upper lobe longest, the 

 others turned toward it, all much shorter than the tube; corolla yellow, hairy 

 and often spotted in the throat, usually 2-3 cm. long, the tube exceeding 

 the calyx. 



Very common in moist places and exceedingly variable. M. hirsulus 

 Howell and M. grandiflorus Howell seem to lack any satisfactory differential 

 characters. 



Mimulus scouleri Hook. Perennial, stoloniferous, glabrous; stems erect, 

 30-60 cm. high; leaves oblong-lanceolate, obtuse, denticulate, shining, 2-5 

 cm. long, the lower ones petioled, the upper broader, ovate, sessile; calyx cara- 

 panulate, the teeth triangular, obtuse; corolla yellow, about 3 cm. long. 



Muddy banks of the Columbia River near its mouth. 



Mimulus alpinus (Gray) Piper. Glabrous or nearly so; stems weak and 

 often densely matted, leafy to the top, 5-10 cm. high, mostly 1-flowered; 

 leaves ovate, nearly sessile, entire or slightly denticulate; corolla 2-3 cm. long. 



Abundant on wet cliffs and along rivulets at high altitudes in the moun- 

 tains. 



Mimulus implexus Greene. Tufted perennial with slender fleshy root- 

 stocks, glabrous up to the inflorescence; stems 15-30 cm. high; leaves all 

 cauline, 3-5 pairs, ovate, sessile, sparsely dentate, 3-nerved, 2-4 cm. long; 

 inflorescence puberulent and viscid; calyx campanulate, angled, purple-dotted, 

 the teeth triangular, the upper one largest; corolla pale yellow, bearded and 

 purple-dotted in the throat. 



Along alpine rivulets at about the limit of trees, rare in our limits. 



455. DIGITALIS. 



Tall herbs with alternate or scattered entire or toothed leaves ; 

 flowers showy, in racemes; calyx 5-parted, the lobes often folia- 

 ceous ; corolla with a somewhat inflated tube and a short scarcely 

 spreading limb, declined; stamens 4, didynamous, included in 

 the corolla. 



Digitalis purpurea L. Foxglove. Pubescent; stems stout, 60-120 cm. high; 

 leaves ovate or ovate-lanceolate, acute, dentate; flowers in a long raceme, 

 drooping; corolla purple or white, 3-5 cm. long, spotted within. 



Introduced from Europe. 



