1924] 
GRANT—A MONOGRAPH OF THE GENUS MIMULUS 217 
A viscid-villous, more or less slimy annual; stems 8-50 cm. 
long, diffusely branched from the base, somewhat weak, often 
elimbing over moist rocks; leaves scattered, thin, ovate to ovate- 
lanceolate, 1.5-5 em. long, .5-3 cm. wide, acute, dentate with 
short salient teeth, ciliate, base broad, mostly truncate or sub- 
cordate, 3-5-nerved, usually shorter than the internodes, petioles 
longer or shorter than the blade, sometimes slightly winged or 
occasionally sessile; pedicels filiform, frequently shorter than the 
leaves and more or less spreading in maturity; calyx plicate- 
carinate, slightly campanulate, 4-7 mm. long, broadly ovate in 
fruit and 6-10 mm. long, often spotted or tinged with red, teeth 
triangular, lanceolate, 1-1.5 mm. long, ciliate, equal; corolla 
cylindrical to funnelform, .7-1.4 cm. long, yellow, tube slightly 
exserted, throat short, ampliate, dotted or streaked with red, 
lobes unequal, mostly erect, short, rounded, the lower lip some- 
times slightly spreading; style and stamens glabrous, included, 
stigma-lips equal, rounded ; capsule chartaceous, shorter than the 
calyx, oblong, placentae completely adherent; seeds oval, longi- 
tudinally wrinkled. 
Distribution: moist places in the mountains from British 
Columbia south to Colorado and California. 
Specimens examined: 
British Columbia: Sprout, 30 June, 1890, Macoun (M); grassy 
places, Elk River, 24 July, 1883, Dawson (G). 
Wyoming: wet banks, Halleck Сайоп, Albany Co., 4 July, 1900, 
Nelson 7440 (G, M, R. Mt., and Pomona) ; moist ledges, Jelm, 
Albany Co., 8 July, 1907, Nelson 9076 (R. Mt.); Grand Teton, 
Jackson's Hole, 6 Aug., 1920, Payson & Payson 2226 (Cornell 
and R. Mt.). ; 
Colorado: Black Сайоп, Gunnison Watershed, 7075 ft. alt., 20 
June, 1901, C. F. Baker 200 (M, В. Mt., and Pomona); Ci- 
marron, 6900 ft. alt., 6 June, 1901, C. F. Baker 30 (G, M, and 
Pomona); Arkansas Сабоп, 21 July, 1873, Т. S. Brandegee 815 
(M); Colorado, 1872, Greene 224 (M); Fort Collins, 28 Aug., 
1894, C. F. Baker 55) (Pomona) ; San Luis Valley, Sept., 1873, 
Wolfe 311 (Cornell) ; pond, Boulder, 5500 ft. alt., 30 June, 1906, 
Daniels 247 (M); mountains between Sunshine and Ward, 
Boulder Co., 8000 ft. alt., Aug., 1902, Tweedy 5202 (R. Mt.); 
