324 SCROPHULARIACEAE. 



Perennials. 



Leaves pinnately veined. 



Herbage glabrous. M. dentatus. 



Herbage slimy-viscid, musk-scented. M. moschatus. 



Leaves palmately veined. 

 Rootstocks wanting. 



Leaves ovate to orbicular. M . langsdorfii. 



Leaves oblong-lanceolate. M. scouleri. 



Rootstocks present. 



Stems 2-4 cm. high, mostly 1-flowered; 

 plants stoloniferous, densely matted, al- 

 pine. M. alpinus. 

 Stems 10-20 cm. high, mostly several-flow- 

 ered, arising from slender matted root- 

 stocks; herbage slimy- viscid. M. implexus. 



Mimulus breweri (Greene) Rydb. Annual, viscid-pubescent, 3-12 cm. 

 high, simple or branched; leaves linear-lanceolate, sessile or nearly so, entire, 

 1-2 cm. long; peduncles as long as the calyx; calyx cylindric, the short teeth 

 triangular-obtuse; corolla pale rose-colored, 5-10 mm. long. 



On dry cliffs in the mountains. 



Mimulus cardinalis Dougl. Perennial, somewhat villous, the inflores- 

 cence viscid; stems erect, 60-90 cm. high; leaves mostly ovate, the upper pairs 

 connate, erosely dentate, several-nerved, 5-10 cm. long; calyx prismatic, its 

 short teeth subequal; corolla scarlet, 3-5 cm. long, the tube longer than the 

 lips; stamens exserted; seeds wrinkled lengthwise. 



In moist places, western Oregon, in the Umpqua Valley; perhaps not in 

 our limits. 



Mimulus lewisii Pursh. Perennial, viscid-pubescent; stems simple, erect, 

 30-50 cm. high; leaves oblong-ovate, denticulate, acute, 3-4 cm. long, the 

 nerves conspicuous; peduncles exceeding the leaves; calyx angular-campanu- 

 late, the teeth triangular, sharp- pointed; corolla rose-red, 4 cm. long, 2-lipped, 

 the tube longer than the calyx, the lobes rounded and spreading. 



Common along alpine streams. 



Mimulus pilosus (Benth.) Wats. Annual, erect, usually much branched, 

 villous throughout with soft somewhat viscid hairs, 10-30 cm. high; leaves 

 oblong or lanceolate, acute, entire, sessile, 1-3 cm. long; pedicels about equalling 

 the leaves; calyx campanulate, not at all angled, deeply 5-cleft, oblique at the 

 orifice; corolla yellow, shortly 2-lipped, 6-8 mm. long, the lobes nearly equal. 



Reported from Vancouver Island, Macoun. Common east of the Cascade 

 Mountains. 



Mimulus nasutus Greene. Much like M. langsdorfii but strictly annual, 

 the leaves usually orbicular; corolla 1-1.5 cm. long, pale-yellow, the tube 

 barely as long as the calyx, the lower lip usually with a large purple blotch. 



Vancouver Island, British Columbia, to California, rare in our limits. 



Mimulus alsinoides Dougl. Annual, glabrous; stems slender, 8-20 cm. 

 high; leaves ovate to orbicular, denticulate, petioled, 6-20 mm. long; pedicels 

 slender, spreading; calyx tubular, the teeth small, subequal; corolla 2-lipped, 

 10-12 mm. long, yellow with a purple spot in the middle of the lower lip. 



On wet rocks, Vancouver Island. British Columbia, to Oregon. The plant 

 is slightly musk-scented. 



Mimulus dentatus Nutt. Perennial with slender rootstocks, glabrous; 

 stems erect, 20-40 cm. high, simple; leaves ovate to oblong, acute, evenly and 

 strongly serrate, 4-8 cm. long; calyx-teeth acute, subequal, half as long as the 

 tube; corolla 3 cm. long, deep yellow with purple dots in the open throat. 



