296 PKOCEEDINGS OF THE ACADEMY OF [1898. 



the Bitter-root range to the sources of the Kooskooskee. They 

 were never on the Clark's River of modern geography, as the great 

 stream of which the Bitter-root is a collateral head does not now 

 bear Clark's name above the junction of the Bitter- root with Hell- 

 gate River. I may add that Letvisia rediviva, the racine amere (or 

 bitter root) of the French, is the plant from which the river, its 

 valley, and the mountain range on the west derive their name. An 

 alternative name of the Bitter-root was St. Mary's River, imposed 

 by Father P. J. De Smet in 1842. 



Montia parviflora Howell. Claytonia perfoliate/, Pursh, Fl. 176, nee Don. 



March 26, 1806. As above said for Claytonia perfoliate. 

 April 17, 1S06. As above said for Claytonia perfoliata. 



Montia sibirica Howell. Claytonia ahinoides Pursh, Fl. 175. 



April 8, 1806. As above said for Claytonia sibirica. There 

 seems to be a duplication of the record of the same specimens of 

 this and preceding species in Mr. Meehan's main text and footnotes. 



Pachystima myrsinites Raf. Ilex ? myrsinites Pursh, Fl. 119. 



June 16, 1806. On the L,o Lo Trail, vicinity of Hungry Creek 

 of L. & C, a branch of the north fork of the south fork of Koos- 

 kooskee River, next east of Collins' Creek. 



November 16, 1805. In camp on the Columbia in sight of the 

 ocean, at the landward end of Haley's or Baker's Bay, just inside 

 Chinook Point. 



I heartily agree with Mr. Meehan that the name of this genus 

 should be written Pachystigma. 



Ceanothus velutinus Dougl. 

 (No date.) 



Rhamnus purshiana DC. R. alnifolia Pursh, Fl. 166, nee Mchx. 



May 29, 1806. Camp Chopunnish. 

 Rhus canadensis trilobata Gray. 



October 1, 180^. In the Little Bend of the Missouri (Lookout 

 Bend of L. & C), at or near the mouth of Cheyenne River. " First 

 discovered in the neighborhood of the Kancez River," i. e., when 

 L. & C. were about the mouth of Kansas or Kaw River, which was 

 reached June 26, 1804; "now very common" means at the date 

 said, Oct. 1, when they were in the said bend. 



