22 



PROCEEDINGS OF THE ACADEMY OF 



[1898. 



Acer macrophyllum Pursh. Pursh, Fl. 267. On the great 



A large timber tree from the rapids of the Columbia River, M. 

 grand rapids of the Columbia, Lewis. \ . April, v. s. 

 April 10, 1806. [A single leaf, 

 but readily recognizable]. 



Polygala alba Nutt. Poly gala Seneca var. tenuifolia 



A kind of Seneca snake root. Pursh, Fl. 750. On the Missouri, 

 On the Missouri River, August Lewis and Bradbury, v. s. 

 10, 1806. [Fairly complete spec- 

 imen]. 



Amorpha fruticosa var. angustifolia 

 Pursh. 



On the great bend of the Mis- 

 souri, August 27, 1806. [Good 

 specimen in fruit]. 



Astragalus Missouriensis Nutt. 



No. 36, 18th September. The 

 growth of the high prairies. 



Astragalus Mortoni Nutt. 



No. 46. The growth of the 

 open prairies, taken 15th of Sep- 

 tember, 1804. Astragalus nov. 

 spec. Open prairies, September 

 5, 1804. May be A. Uralensis ? 

 L. 9 



Lupinus argenteus Pursh. 



On the Cokahlaishkit, July 7, 

 1806. Flowers yellowish-white. 

 [Good specimen]. 



Pursh, Fl. 466, var. y v. s. in 

 Herb. Lewis. 



Pursh, Fl. 468. On the banks 

 of the Kooskooskee, M. Lewis. 

 2/. June, July, v. s. in Herb. 

 Lambert. Flowers small, cream 

 coloured. 



9 Astragalus Mortotii Nuttall. 



" The growth of the open prairie loth September, 1804." Pursh describes 

 Astralagtis tenellus " on the banks of the Missouri, M. Lewis, August." From 

 the difference in these two observations it is not clear that this specimen is 

 the one Pursh had in view. Pursh's A. tenellus is referred to A. ?nultiflorus 

 by modern authors, but Pursh's description of A. tenellus does not accord witli 

 A. multifiorus. The specimens are badly eaten, but are sufficient to make it 

 probable A. tenellus Pursh, should be referred to A, Mortoni Nuttall and, 

 perhaps, the name have priority. 



