1924] 
GRANT—A MONOGRAPH OF THE GENUS MIMULUS 127 
Herbaceous plants; stems quadrangular, mostly glabrous; 
leaves dark green, not viscid nor slimy, 1l-nerved or pinnately 
veined; inflorescence racemose; calyx prismatie, sharply angled, 
little or not at all inflated when mature, teeth equal; corolla 
personate, blue, varying to white in some specimens; anthers and 
style glabrous, stigma-lips equal; capsule membranaceous, about 
as long as the calyx, dehiscent to the base along both sutures, 
the placentae separating at the apex. Sp. 1-5. 
KEY TO THE SPECIES 
= vie pinnately veined. 
tly sessile; ү 1 than one-half as long as the leaves 
diy dac ater ea ЖҰҚ. АЛЕ ҚҰЛДЫ DEM d LEUR UE 1. M. ringens 
b. Le petioled; pedicel tly less than one-half as long as the leaves 
a ee Re ee Re ЛИ 2. M. 
B. Leaves not er veined. 
a. Leaves 1-ne 
а. Stamens included T АЯНЫ ТҰН E MS 8. M. gracilis 
B. Stamens exserted.............. di AE Nep rum 6. M. linearis 
Bo Dive тей... а. 4. М. madagascariensis 
l. M. ringens L. Sp. Pl. 634. 1753; Walter, Fl. Caroliniana, 
172. 1788; Curtis, Bot. Mag. I. 8: pl. 283. 1794; Willd. Sp. РІ. 
3: 360. 1800: Michx. Fl. Bor. Am. 2: 23. 1803; Persoon, Syn. 
Р]. 2: 163. 1807; Pursh, Fl. Am. Sept. 2: 426. 1814; Nuttall, 
Gen. 2: 51. 1818; Lodd. Bot. Cab. 5: pl. 410. 1820; Elliot, 
Bot. 8. Carolina & Ga. 2: 124. 1824; Torrey, Comp. Fl. North. & 
Middle States, 242. 1826; Nat. Hist. №. Y. 2:36. 1843; Hook. 
Fl Вог. Am. 2: 100. 1840; Benth. Ѕегорћ. Ind. 28. 1835; 
DC. Prodr. 10: 369. 1846; Gray, Manual, 299. 1848; Proc. 
Am. Acad. 11: 98. 1876; Syn. Fl. N. Am. 2!: 276. 1878, ed. 2, 
and Suppl. 446. 1886; Greene in Bull. Calif. Acad. Sci. 1: 107. 
1885; Coulter, Contr. U. S. Nat. Herb. 2: 309. 1892; Robinson 
& Fernald i in Gray, Manual, ed. 7, 723. 1908; Britton & Brown, 
Ill. Fl. 3: 157, fig. 3265. ` 1898, and ed. 2, 3: 190, fig. 3775. 1913; 
Britton, Manual, 827. 1901, and ed. 2, 1905; Small, Fl. South- 
eastern U. S. 1062. 1903, and ed. 2, 1062. 1913; Pennell in 
Torreya 19: 148. 1919. 
M. pallidus Salis. Prodr. 99. 1796. | 
M. acutangulus Greene, Leaf. Bot. Obs. & Crit. 2:1. 1909. 
S d ringens var. congesta Farwell, Rept. Mich. Acad. Sci. 19: 
1917. 
