[Vol. 2 



608 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Batesville, Butler Co., 21 May, 1908, Smith 534 (Field Mus. 

 Herb.) ; St. Louis, coll. of 1832, Drummond (Kew Herb.) ; St. 

 Louis, Riehl 382 (Kew Herb.). 



Arkansas: Fulton, 17 April, 1905, Bush 2354 (Mo. Bot. 

 Gard. Herb.) ; Fulton, 24 April, 1914, Palmer 5381 (Mo. Bot. 

 Gard. Herb.); Arkansas Post, 20 March, 1909, Kellogg (Mo. 

 Bot. Gard. Herb.) ; Little Rock, 22 April, 1909, McNair (U. 

 S. Nat. Herb.); Little Rock, June, 1886, Ilasse (Field Mus. 

 Herb.). 



Louisiana: without locality, Hale (Gray Herb, and Kew 

 Herb.) ; Gretna, 28 April, 1899, Ball 315 (Gray Herb., U. S. 

 Nat. Herb., Field Mus. Herb., and Mo. Bot. Gard. Herb.) ; 

 between New Orleans and Balize, May, 1829, Berlandier 556, 

 1946 (Gray Herb, and Mo. Bot. Gard. Herb.) ; Balize, April, 

 1839, Lindheimer (Mo. Bot. Gard. Herb.); Baton Rouge, 22 

 Jan., 1874, Joor (Mo. Bot. Gard. Herb.) ; Holly Ridge, West 

 Carroll Parish, July, 1910, Mosely (Field Mus. Herb.); 

 swampy woods, Natchitoches, 16 April, 1915, Palmer 7253 

 (Mo. Bot. Gard. Herb.) ; New Orleans, Drummond 176, 626 

 (Kew Herb.); New Orleans, coll. of 26 March, 1847, Brom- 

 field (Kew Herb.). 



Texas: low ground, San Augustine, 31 March, 1915, Pal- 

 mer 7114 (Mo. Bot. Gard. Herb.). 



Forma robustior, forma nova. 



Stout herb ; upper stem-leaves 1.5 to 2 dm. long, 8 to 10 cm. 

 wide; the large lateral obovate leaf -lobes alternating with 

 smaller wedge-shaped divisions of the leaf. 



Georgia: ditch banks, near Savannah, 21 March, 1882, J. 

 D. Smith (Gray Herb.), type. This plant appears to be a 

 giant form with rather marked foliage. 



19. S. Greggii Rydb. Bull. Torr. Bot. Club 27 : 170. 1900. 



S. tampicanus Gray, PL Fendl. 109. 1849 (in Mem. Am. 

 Acad. N. S. 4), not DC. 



S. lobatus Gray, PI. Wright., part 2, 99. 1853 (in Smithson. 

 Contr. 5), not Pers. 



Annual or biennial, glabrous or with a slight tomentum in 

 the leaf-axils and on the upper side of the leaf along the mid- 



