[Vor. 11 
132 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
Benth. Seroph. Ind. 28. 1835; DC. Prodr. 10: 369. 1846; 
Gray in Proc. Am. Acad. 11: 98. 1876; Syn. Fl. N. Am. 2: 276. 
1878, and ed. 2, 1886; Greene in Bull. Calif. Acad. Sci. 1: 107. 
1885; Coulter, Contr. U. S. Nat. Herb. 2: 309. 1892; Britton 
& Brown, Ill. Fl. 3: 158. fig. 3266. 1898, and ed. 2, 3: 190. fig. 
3776. 1913; Britton, Manual, 827. 1901; Small, Fl. South- 
eastern U. S. 1063. 1903; Robinson & Fernald in Gray, Manual, 
ed. 7, 723. 1908; Pennell in Torreya 19: 148. 1919. 
M. alatus f. albiflorus House in Bull. №. Y. State Mus. 1921: 
17. 1923. 
Stems stoloniferous, glabrous, 2-7 dm. high, simple or branched, 
4-angled, the angles more or less winged; leaves broadly ovate to 
ovate-lanceolate, acute, 5-15 cm. long, 2-6 cm. high, serrate, 
tapering to а narrow margined petiole, 1-1.5 em. long; pedicels 
stout, mostly shorter than the calyx; calyx oblong, 1.4-1.7 em. 
long, angles sharp, teeth 1.5 mm. long, broad, mucronate; corolla 
blue or violet, sometimes tinged with pink, rarely white, 2-2.5 
cm. long, tube slightly exserted, throat nearly closed, lobes of 
the upper lip erect, strongly reflexed, the lower lip longer and 
spreading; stamens and style included; capsule ovate, obtuse; 
seeds oval, papillate. 
Distribution: common in the Atlantic states from Massa- 
chusetts to South Carolina, west to the Mississippi River and 
south to Texas. : 
Specimens examined: 
Massachusetts: Cambridge, 26 July, 1875, Bailey (Stanford). 
Pennsylvania: Northampton Co., 1878, Raw 47 (M); Conewago 
Mts., July, 1898, Eisenhower (M); Smithville, Lancaster Co., 
3 Sept., 1892, Heller & Halbach 688 (Cornell and M); Pitts- 
burgh, 1831, Volz (M); low woods along Trout Run, Wawa, 
Delaware Co., 29 July, 1904, Painter 816 (М); Dillerville, Aug 
1889, A. F. Eby (M); Safe Harbor, July, 1889, A. F. Eby (М). 
New Jersey: Bloomfield, July, 1877, Rusby (Cornell). 
District of Columbia: low ground, 31 July, 1896, Steele (М); 
slate shaded streams, Anacostia, 24 July, 1904, Painter 760 
M). 
Virginia: along Hunting Creek near Alexandria, 12 Aug., 1902, 
Shull 206 (M); Fairfax Co., Aug., 1865, A. Н. Curtis (Cornell). 
