138 ROSALES 



County; Haigler; Lincoln; St. James; Sioux County; Thedford; 

 Wahoo. 



6. Psoralea collina Rydb. 



On hillsides in the northwestern part of the state. Chadron; Ft. Rob- 

 inson; Scotts Bluff County. 



7. Psoralea tenuiflora Pursh. 



Common on hills and table-lands in the western part of the state. 

 Deuel County; Fairbury; Franklin; Lincoln; Phelps County; Ft. Robin- 

 son; Talmage. 



8. Psoralea floribunda Xutt. 



Psoralea tenuiflora floribunda (Xutt.) Rydb. 

 In valleys, most common in the eastern part of the state. ]\Iinden, 



9. Psoralea linearifolia Torr. & Gray. 



Rare in the western part of the state, Buffalo County; Deuel County. 



10. Psoralea lanceolata Pursh. 



Common in sandy soil in the central and western part of the state. 

 Belmont; Haigler; Kearney County; Mullen; Riverton; Rock County; 

 Sheridan County; Sioux County; Thomas County. 



11. Psoralea micrantha A. Gray. 

 (Included in P. lanceolata in Gray's Manual.) 

 Nebraska according to Britton's Manual. 



19. Amorpha. 545. 



Plants 2-5 m. high, leaflets 1.5-3 cm. long. 1. A. fruticosa. 



Plants 1 m. or less high, leaflets not more than 1 cm. long. 



Softly grayish-canescent. leaflets about 1 cm. long, spikes several 



clustered. 2. A. canescens. 



Glabrous, foliage bright green, leaflets 5-7 mm. long, spike usually 



solitary, terminal. 3. A. nana. 



1. Amorpha fruticosa L. False Indigo. 

 Common along streams throughout the state. Fairbury; Indianola; 

 Kearney; Lincoln; Ponca; Red Cloud; Thedford; Walton. 



2. Amorpha canescens Pursh. Shoe-Strings, Lead Plant. 

 Common on dry prairies throughout the state. Anselmo; Aten; Lin- 

 coln; Sheridan; Talmage; Thedford. 



3. Amorpha nana Nutt. 

 .Amorpha microphylla Pursh. 



Abundant on the bluffs of the :\Iissouri in northeastern Nebraska. 

 Aten; Butte. 



20. Parosela. (Dalea.) 545. 



Glabrous, spikes usually several, flowers white or pink. 



Spike long, 5-13 cm., flowers distant, leaflets 5--11. 1. P. enneandra. 



Spikes short, 2-5 cm., dense, leaflets 15-41. 2. P. dalea. 



Pubescent, spike solitary, ovoid or globse, flowers yellow. 3. P. aurea 



1. Parosela enneandra (Nutt.) Britton. 



Rather common in the western part of the state. Broken Bow; Calla- 

 way; Deuel County; Hastings; Kearney; Nelson; Minden; Niobrara; 

 Phelps County; Red Cloud. 



