1898.] NATURAL SCIENCES OF PHILADELPHIA. 299 



Trifolium megacephalum Xutt. Lupinaater macrocephalus Pursh, Fl. 479, t. 23. 



April 17, 1806. Rock Fort Camp (not " Rockford ") at The 

 Dalles of the Columbia. 



Trifolium microoephalum Pursh, Fl. 478. 



July 1, 1806. Same spot as Oxytropis nana, above ; here called 

 u Valley of Clark's River." The Journal, p. 1066 of my edition, 

 speaks of " two species " of clover in this valley, one with a very 

 narrow, small leaf and a pale red flower, the other with a white 

 flower, and nearly as luxuriant in its growth as our red clover. 



Amelanchier alnifolia Xutt. Pyrus sanguined Pursh, Fl. 340, in part. 



April 15, 1806. Rock Fort Camp. The species is also recorded 

 repeatedly by L. & C. in widely separated localities ; see my edi- 

 tion, pp. 277, 282, 419, 828. 



Crataegus douglasi Lindl. C. glandnlosue Pursh, Fl. 337. 



April 29 or 19, 1806 ; for dates conflict in main text and its foot- 

 note. If 19th, the place is Celilo Fails of the Columbia; if 29th, 

 mouth of Wallawalla River, on the Columbia, site of old Fort 

 Walla walla and of modern Wallula. It is also elsewhere reported, 

 by L. & C. on the Columbia, much lower down. Mr. Meehan refers 

 to the Journal of January 20, 1806, but there is no allusion to the 

 plant at that date. He evidently means the description of No. 12 

 of the botanical list drawn up at Fort Clatsop ; this is found on p. 

 826 of my edition, but there are no dates in this list. I am sorry to 

 find that Mr. Knowlton has discredited the identification, supposing 

 No. 12 to be Pyrus rivularis. It is correctly given, however, on p. 

 908, March 25, 1806, when the expedition was in the vicinity of 

 Puget's Island. Again, on June 10, 1806 (p. 1041 of my edition), 

 when L. & C. left Camp Chopunnish, they speak of the " purple 

 haw," and Mr. Knowlton there bracketed Viburnum pauciflorum — 

 no doubt in error, as pointed out by Professor C. S. Sargent in his 

 admirable paper on the trees of the expedition in Garden and For- 

 est, No. 466, January 27, 1897, p. 39. 



Geum triflorum Pursh. G. cilatum Pursh, Fl. 352. 



June 12, 1806. Camp on Quamash Flats, the modern Weippe 

 or Oyipe Prairie in Shoshone Co., Idaho, on the Lo Lo Trail near 

 the west base of the mountains. 



Pyrus sambucifolia Cham, and Schl. (?). 



June 27, 1806. On the Lo Lo Trail, same place as Claytonia 

 lanceolata. 



