Two Nuttallian Species of Oxalis. 



By John K. Small. 



In the earlier part of this century Mr. Nuttall collected two 

 species of Oxalis on the Pacific slope ; the one he secured in 

 Oregon, the other in California. The collector sent descriptions 

 of his two new species to Torrey and Gray while they were pub- 

 lishing their Flora of North America. The descriptions were ac- 

 companied by specimens which are now preserved in the Her- 

 barium of Columbia University. 



Torrey and Gray reduced both the species to Oxalis comiciilata* 

 and printed Mr. Nuttall's descriptions in a foot-note and thus the 

 two plants for many years, and one to the present time, remained 

 without further recognition. 



The first of the two species described was Oxalis puniila.'\ It 

 was said to occur in "Forests of the Rocky Mountains and Ore- 

 gon." The original specimen I have to refer to is from Oregon, 

 and consists of two plants, the one in flower the other in fruit. 

 This form was later described by Professor Trelea seas 6';ir«/w5z/'^5- 

 dorfii^X which name may stand on account of the earlier described 

 Oxalis piunila,% o{T)'\}xy\\{Q:. The ample supply of Oxalis Suks- 

 dorfii which we now have from Oregon, agrees in all details with 

 Mr. Nuttall's original specimens of Oxalis pumila. In addition to 

 our material from Oregon, I find two specimens from California ; 

 they were collected many years ago and sent to Dr. Torrey. The 



*F1. N. A. i: 212. 



fT. amlG. Fl. N. A. i : 212. 



X Mem. Bost. Soc. Nat. Hist. 4 : 89. 



§ Mem. Soc. Linn. Par. 4 : 616. 1826. 



