62 RHOEODALES 



3. Roripa palustris (L.) Bess. 



An amphibious hydrophyte. Common throughout the state. Ewing; 

 Indianola; Kearney; Lincoln; St. James; Walton; Whitman. 



4. Roripa hispida (Desv.) Britton. 

 Callaway; Kennedy; Lincoln. 



5. Roripa nasturtium (L.) Rusby. 



In shallow water throughout the state. Belle vue; Grand Rapids; 

 Lincoln; Squaw Canon; Wahoo Creek. 



10. Cardamine. 453. 



Leaves pinnate, plant more or less pubescent. 1. C. hirsuta. 



Leaves simple, plant glabrous. 2. C. bulbosa. 



1. Cardamine hirsuta L. 



In moist places and in streams in the sandhills. Grand Rapids. 



2. Cardamine bulbosa (Schreb.) B. S. P. 



In wet places in the eastern part of the state. Burwell; Callaway; 

 Fremont; Peru; Richardson County. 



11. Dentaria. 455. 



1. Dentaria lacinlata :Muhl. 



In meadows and wooded bluffs, mostly along the Missouri. Nemaha; 



Peru; Table Rock. 



12, Physaria. 457. 



1. Physaria brassicoides Rydb. 



In the foothills, infrequent. Scotts Bluff County. 



13. Lesquerella. 457. 



Ovary and pods stellate pubescent. 



Lower leaves 1-2.5 cm. long, pedicels 6-12 mm. long. 



1. L. spathulata. 

 Lower leaves 5-8 cm. long, pedicels over 15 mm. long. 



2. L. argentea. 

 Ovary and pods glabrous. 



Sparingly pubescent, stem much branched. 3. L. gracilis. 



Densely stellate pubescent, stem simple. 4. L. oval if ol la. 



1. Lesquerella spathulata Rydg. 

 Lesquerella alpina (Nutt.) Wats. 



In the western part of the state. Belmont; Harrison; Whitney. 



2. Lesquerella argentea (Pursh.) Mc. M. 



Common in dry sandy prairies. Belmont; Box Butte County; Bruns- 

 wick; Ewing; Pine Ridge; Sioux County; Wiegand; Valentine. 



3. Lesquerella gracilis (Hook.) Watson. 



In the southeastern part of the state. Weeping Water. 



4* Lesquerella ovalifolia Rydb. 



In dry soil in the western part of the state. Kimball County. 



14. Bursa. (Capsella.) 459. 



1. Bursa bursa-pastoris (L.) Britton. 



A common weed in the eastern part of the state. Fairbury; Ft. Robin- 

 son; Lincoln; Valentine. 



