SCROPHULARIACEAE. 227 



5-angled, 5-toothed, the upper tooth usually the largest; corolla 

 irregular, 2-lipped; upper lip erect or reflexed, 2-lobed, the lower 

 spreading, 3-lobed ; stamens 4, all anther-bearing; stigma 2-lobed; 

 seeds numerous. 



Flowers reddish or purple. 



Corolla small, 5-10 mm. long. M. breweri. 



Corolla larger, 15 mm. or more long. 



Flowers 30-40 mm. long. M. lewisii. 



Flowers 15-20 mm. long. 



Pedicels 2-3 mm. long. M. nanus. 



Pedicels 5-15 mm. long. M. clivicola. 



Flowers yellow. 



Calyx not angled, deeply 5-cleft. M. pilosus. 



Calyx 5-angled, 5-toothed. 



Leaves pinnately veined; plant musk-scented. M. moschatus. 



Leaves palmately veined; plant inodorous. 



Flowers large; plants nearly or quite glabrous. 



Perennial; lip of corolla spotted. M. langsdorfii. 



Annual; lip of corolla with a large blotch. M. nasulus. 



Flowers small; plants pubescent. 



Fruiting calyx distended. M. breviflorus. 



Fruiting calyx cylindric. 



Plant erect, not villous. M. peduncularis. 



Plant spreading or prostrate, villous and 



shiny-viscid. M. floribundus. 



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-color, 5-10 mm. long. Moist banks in 

 the Blue Mountains. 



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. Along 

 streams in the highest parts of the Blue Mountains. 



Mimulus nanus H. & A. Annual, simple or branched from the base, 2-15 

 cm. high, finely glandular-pubescent throughout; leaves oblong to obovate or 

 oblanceolate, narrowed at the base, entire or denticulate, 5-20 mm. long; 

 pedicels 2-3 mm. long; calyx tubular, the teeth subequal, triangular, acutish, 

 one-fourth as long as the tube; corolla dark purple, with a darker throat, 

 funnelform and flaring, 18-20 mm. long, bilabiate, the limb 10 mm. broad; 

 seeds oblong, less than 1 mm. long, brown, twice as long as broad. On moist 

 banks, Craig Mountains, Idaho. 



Mimulus clivicola Greenman. Closely similar to M. nanus; corolla reddish, 

 spotted in the throat, more funnelform and less flaring; pedicels 5-15 mm. long; 

 calyx distinctly narrowed at the base; seeds smaller, thicker, not twice as 

 long as broad. On hillsides in open pine woods, Thatuna Hills and Craig 

 Mountains, Idaho. 



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 



