1924] 
GRANT—A MONOGRAPH OF THE GENUS MIMULUS 213 
The petioled leaves, cylindrical calyx, and longer corolla separ- 
ate this species from M. latidens, while the smaller corolla and 
glabrous style distinguish it from M. washingtonensis to which it 
is most nearly related. 
41. M. washingtonensis Gdgr. in Bull. Soe. Bot. Fr. IV. 19: 
218. 1919. 
M. peduncularis Gray, Syn. Fl. Х. Am. ed. 2, 2!: Suppl. 450. 
1886, not Dougl.; Greene in Bull. Calif. Acad. Sci. 1: 281. 1885; 
Howell, Fl. Northwest Am. 521. 1901; Piper, Fl. Southeast 
Wash. and Adj. Idaho, 228. 1914; Henry, Fl. Brit. Columbia, 
269. 1915; Rydb. Fl. Rocky Mountains, 779. 1917. 
А small pubescent or glandular-pubescent annual; stems some- 
what quadrangular, 4-18 em. high, simple or usually loosely 
branched from the base; leaves triangular-ovate or lanceolate, 
.9-1.5 em. long, 2-7 mm. broad, rather thick, acute, denticulate, 
base more or less cuneate, often reddish-purple on the lower 
surface and with scattered white hairs, 1-3-veined from the base; 
petioles mostly shorter than the blades; pedicels filiform, much 
elongated, spreading or divaricate in fruit, slightly thickened at 
the base; calyx 5-7 mm. long, prismatic, minutely puberulent, 
distinctly angled, not inflated when mature, ribs reddish, teeth 
equal, short, broad, mucronate, 1 mm. long, ciliate; corolla bi- 
labiate, 1-2 em. long, yellow, tube slender, funnelform, much 
exserted, palate densely hairy, partly closing the throat, lobes 
rounded, entire, the lower lip spreading and almost twice as long 
ав the erect upper one; stamens included, glabrous; style pubes- 
cent, not much longer than the upper pair of stamens, stigma-lips 
unequal, broadly rounded, laciniate; capsule not much over half 
as long as the calyx, oblong, placentae not separating; seeds 
oblong, smooth. 
Distribution: moist sandy places in Washington and Oregon. 
Specimens examined: | 
ashington: moist sandy banks of the Columbia River, W. Klick- 
itat Co., Sept., 1883, Suksdorf 204 (С); low sandy banks of 
the Columbia River, Klickitat Co., 25 Sept., 1881, Suksdorf 51 
(G); low sandy banks of the Columbia, W. Klickitat Co., 
Oct., Nov., 1885, Suksdorf 560 (G, M, and Stanford, type 
оп); on banks of the Columbia River, 1884, Barrett (С). 
