694 SCROPHULARIACEAE 



within on all sides; bracts (except uppermost) longer than calyces and mostly 

 dentate distally; inflorescence slightly or not secund. 

 Throat of corolla nearly cylindric; fruiting calyx 12-17 mm. long, its uppermost 



lobe usually 3-5 mm. long. 92. M. Bolanderi. 



Throat of corolla nearly campanulate; fruiting calyx 20-25 mm. long, its uppermost 

 lobe 6-7 mm. long. 9Z. M. platylaetnus. 



Corolla yellow, 25-45 mm. long, its throat widely campanulate; uppermost calyx-lobe 5-10 mm. long, 

 2-3 times length of other lobes. 94. M. brevipes. 



Corolla salverform, purple, its pale limb reticulate-veined, its throat not distinguishable from the wide cylindric 

 tube, both externally glandular-puberulent. 95. M. mohavensis. 



VIII. MiCROPHYTON. 

 Plant minute; corolla yellow or purplish. 96. M. pygmaeus. 



IX. Oenoe. 



Corolla (if opening) salverform, purple, its pale limb reticulate-veined, its throat not distinguishable from the 

 wide cylindric tube, both externally glabrous. 

 Capsule straight, about 4 times as long as wide, dehiscing through septum distally; corolla 10-12 mm. 

 long, chasmogamous; calyx-lobes acute; bracts narrowly elliptic; plant 1.5 dm. tall. 



97. M. picttis. 



Capsule decurved, less than twice as long as wide, tardily or not dehiscent; corolla rudimentary, cleistoga- 

 mous; calyx-lobes obtuse; bracts oblanceolate; plant less than 1 cm. tall. 



98. M. cleistogamus. 



Corolla tubular-campanulate, its expanding throat clearly distinguishable from the narrow tube, externally 

 finely pubescent or glabrous; capsule tardily or not dehiscent. 

 Stigmas equal or nearly so, rounded, wider than long; lower equaling or exceeding upper lobes of corolla; 

 leaf -blades linear to oblanceolate. 

 Anthers glabrous; corolla-tube equaling calyx and about as long as the yellow slightly 2-ridged throat, 

 the widely spreading lobes mallow-purple; calyx-lobes acute to attenuate-tipped; pedicels strongly 

 decurved; lower leaf-blades petioled. 99. M. rxiptcola. 



Anthers hairy; corolla-tube much exceeding calyx and longer than the strongly 2-ridged and dorsally 

 dark purple throat, the bilabiately projecting-spreading lobes purple; calyx-lobes obtuse or 

 obtusish; pedicels straight; leaf-blades all sessile or nearly so. 

 Tube of corolla not over twice as long as calyx, and about twice as long as throat; capsule 6-7 



mm. long; leaf-blades oblanceolate. 100. M. tricolor. 



Tube of corolla more than twice as long as calyx, and more than thrice length of throat; capsule 

 3-4 mm. long; leaf-blades linear to narrowly oblanceolate. 

 Lower lip of corolla yellow with many fine purple spots; corolla-tube externally minutely 

 pilose, 3-4 times length of calyx; calyx-lobes very unequal; plants usually caulescent. 



101. M. pulchellus. 



Lower lip of corolla purple, medianly pale and with large purple spots; corolla-tube externally 

 glabrous, 3-6 times length of calyx; calyx-lobes nearly equal; plants nearly acaulescent. 



102. M. angustatus. 



Stigmas unequal, the lower longer; lower shorter than upper lip of the purple corolla. 

 Capsule decurved, semiterete, not widened at base; plants glandular-pubescent. 



Lower one-half to three-fourths the length of upper lip of corolla, both lips purple, the upper 

 darker; corolla 30—45 mm. long, its tube at least one and a half times length of calyx. 



103. M. Kelloggii. 



Lower less than one-fifth the length of upper lip of corolla, the lower lip purple and the upper 

 white; corolla 20-25 mm. long, its tube about equaling calyx. 



104. M. Traskiae. 



Capsule straight or slightly decurved, somewhat flattened, widest at base; plants pubescent to hirsute. 

 Lower lip of corolla at least one-fourth length of upper, the corolla less than 30 mm. long and its 

 throat narrowly campanulate; calyx-lobes only slightly more hairy than its tube. 

 Tube of corolla one and a half to two times length of calyx, the corolla 13-25 mm. long, with 

 throat not darker than lobes; leaf-blades narrowly elliptic-obovate, their proximal mar- 

 gins and the calyces hirsute with glandless hairs. 105. M. Congdonii. 

 Tube of corolla about equaling calyx, the corolla about 15 mm. long, with throat darker than 

 lobes; leaf -blades elliptic-ovate; plant densely glandular-pubescent, the calyces glandular- 

 pilose. 106. M. Brandegei. 

 Lower lip of corolla rudimentary or lacking, the corolla 30-40 mm. long and its throat inflated- 

 campanulate, darker than the corolla-lobes; calyx glandular-pubescent, but with the lobes 

 densely ciliate with glandless hairs. 107. M. Douglasii. 



1. Mimulus Lewisii Pursh. Lewis' or Great Purple Monkey-flower. Fig. 4521. 



Mimulus Lewisii Pursh, Fl. Amer. Sept. 427. 1814. 



Erect glandular-pubescent perennial herb, the stem 3-9 dm. tall. Leaf-blades oblong-elliptic, 

 sinuately denticulate, longitudinally 3-5 veined, narrowed to rounded-clasping bases or the lower 

 with ill-defined petioles, the larger blades 3-7 cm. long; pedicels 30-70 or even 100 mm. long; 

 calyx 20-30 mm. long, angulate-ribbed, lobes nearly even, triangular-aristate, 4-6 mm. long; 

 corolla 30-50 mm. long, the lobes magenta, little differentiated, the campanulate throat ventrally 

 with 2 yellow hairy ridges and purple-red spots ; anthers ciliate ; stigmas fimbriolate ; capsule 

 13-14 mm. long, dehiscing through apex of septum. 



Streamsides and wet banks, Canadian Zone to Arctic- Alpine Zone; southeastern Alaska to the southern 

 Sierra Nevada of California, eastward to Montana and Colorado. Type locality: near the Lolo Pass in northern 

 Idaho. June-Aug. 



2. Mimulus cardinalis Dougl. Scarlet Monkey-flower. Fig. 4522. 



Mimulus cardinalis Dougl. ex Benth. Scroph. Indicae 28. 1835. 



Erect perennial herb, the stem 4-12 dm. tall, hirsute but scarcely glandular. Leaf-blades 

 oval to oblong-elliptic, sinuately denticulate, longitudinally 3-S-veined, glandular-pubescent, at 

 least the upper with rounded-clasping bases, the larger blades 7-11 cm. long; pedicels 50-80 mm. 



