NATIVE PLANTS NOT OCCURING AT FARGO 147 
Ranunculus septantrionalis Poir. June 5. 
Senecio integerrimus Nutt. June 5. 
Sideranthus spinulosus (Nutt.) Sweet. July 15. 
Sideranthus grindelioides (Nutt.) Britton. In flower for some 
days at Bowman, June 20, 1918. 
Thelypodium integrifolium (Nutt.) Endl. In flower for some 
days at Tappen, July 11, 1919. 
Viola nuttallii Pursh. NUTTALL’S VIOLET. May 5; Apr. 12, 
1910 at Minot. 
The name of Thomas Nuttall, one of the early American 
naturalists, is well commemorated in this pretty little violet 
which is one of the characteristic spring flowers of the west- 
ern part of the state. He described many of our plants for 
the first time from specimens collected along the Missouri 
River in 1810. (Note how often his name occurs in the above 
list.) 
