Subfamily III. PAPILIONOIDEAE. 



SOPHOBA L. 



Sophora affinis T. and G. 

 Small Flora, p. 595. 

 April. 



Distribution: — Arkansas to Louisiana and Texas. 

 Louisiana: — Abundant on high bluffs of the Eed River near Shreve- 



pOTt. 



BAPTISIA Vent. 



Eaptisia tinctoria (L.) E. Br. Wild Indigo. 



Chapman Flora, p. 121; Small Flora, p. 598; Britton and Browne 111. 

 Flora, vol. II, p. 266, Figure 2050. 



June. 



Distribution: — Maine to Ontario, Minnesota, Florida, Louisiana. 



Louisiana: — Dry, sandy soil, Shreveport, Euston. 

 Baptisia alba (L.) E. Br. 



Chapman Flora, p. 122; Small Flora, p. 600; Britton and Browne HI. 

 Flora, vol. II, p. 267, Figure 2053. 



June. 



Distribution: — Missouri to Indiana, south to Louisiana; east to North 

 Carolina and Florida. 



Louisiana: — Dry fields near Shreveport. 

 Eaptisia leucantha T. and G. 



Chapman Flora, p. 122; Small Flora, p. 600; Britton and Browne 111. 

 Flora, vol. II, p. 267, figure No. 2054. 



May. 



Distribution: — Ontario to Minnesota, Florida and Texas. 



Louisiana: — Fine barrens near Covington. 

 Baptisia lanceolata Ell. 



Chapman Flora, p. 121; Small Flora, p. 599. 



June. 



Distribution: — JNorth Carolina to Florida. 



Louisiana: — Dry, sandy soil; Fearl Eiver. 

 Baptisia nuttalliana Small. 



Baptisia confusa Pollard and Ball. 



Baptisia nuculifera Greene. 



Small Flora, p. 599. 



April. 



Distribution: — Arkansas to Louisiana, Texas and Mexico. 



Louisiana: — In dry fields from Shreveport to Monroe and Alexandria, 

 becoming a troublesome weed in pastures near Shreveport, where it 

 chokes out other vegetation. This is the commonest and most abundant 

 of all the Louisiana Baptisias. Dr. E. L. Greene, in Leaflets, Vol. II, 

 page 85, May, 1910, has described it as a new species of Baptisia nuculi- 

 fera. An examination of a number of specimens in the Shaw Herbarium 

 at St. Louis has convinced the writer that it is identical with the Bap- 

 tisia collected near Alexandria, Louisiana, by Pollard and Ball, and 

 named by them Baptisia confusa. This is the plant described in Small's 

 Flora as Baptisia nuttalliana. Taking into consideration the fact that 

 Dr. Greene's description is based entirely on specimens with very mature 

 fruit and no flowers, there is very little difference in the two descriptions. 

 The two descriptions of the leaves are almost identical. The pod is 

 described by Dr. Greene as "ligneous orbicular," by Small as "oval, 

 firm"; by Greene as "one-half an inch long and broad, ferrugineous 

 silky, stipe about equalling the calyx"; by Small, " 1 to 1-7 c. m. long, 



