86 MISSOURI BOTANICAL GARDEN. 



Alabama (Mohr}, Louisiana (Lindheimer, 1859 ; Sale), 

 Texas (Wright; Lindheimer, 1843, 93), Ohio (Riddell, 

 1838), Indiana (Canby, 1862), Illinois, Michigan, 

 ( Wright), Wisconsin (Hale, 1861 ; Douglas), and Iowa. 

 Plate 23. 



= = Pedicels shorter, arcuately recurved : valves more flexible 

 and with lighter veins except in Floridanus, one or more of them 

 with elongated callosities, except in forms of altissimus. 



a. Stem often glaucous, especially in the second: leaves pale green, 

 lanceolate, minutely crenulate- crisped, not undulate nor cor date: 

 inflorescence nearly leafless. Glabrous throughout. 



12. R. FLORIDANUS, Meisner. A couple of feet high, 

 slender, simple or with a few suberect branches ; leaves 

 scarcely over 1.5x8 crn. (the lowest dying early), strongly 

 crenulate, lanceolate, subacute; panicle leafless, simple, 

 the few branches nearly erect ; whorls very dense, the lower 

 remote, the upper closely approximated ; pedicels rather 

 stout, once or twice as long as the fruit, in the former case 

 concealed, tumidly jointed about the middle, apophysate 

 next the flower ; valves 3.5 to 4 mm. long, deltoid, slightly 

 blunt-pointed, with rather heavy veins ; callosities 3, sub- 

 equal, less than 1 mm. broad, two-thirds as long as the 

 valves, finely warty and somewhat wrinkled; achenel.Sx 

 2.7 mm. DC. Prod. xiv. (1856), 46. Known to me 

 only through specimens from New Orleans (Joor, 1885) and 

 Pointe a la Hache, La. (Langlois, 1880, no. 135, 1884, 

 and 1885, no. 96), but presumably extending along the 

 Gulf coast to Florida, where the type was collected by 

 Rugel. Plate 24. 



The inflorescence is suggestive of simple forms of the next 

 species, but the leaves are more crenulate, and the fruiting 

 valves are as heavily veined as in verticillatus, to which 

 most of the material referred here by collectors apparently 



13. R. ALTISSIMUS, Wood. Two or three feet high 

 from one or several long conical roots, rather slender, 



