1826, JULY. LEWIS AND CLARKE'S RIVER 197 



(187) Cruciferae, annual ; stem smooth and glossy ; 6 to 12 feet high ; 

 never more than one stem from the same plant ; leaves alternate, smooth, 

 linear, acute ; flowers appear to be faint red and white, not yet in full 

 blossom ; on the plains, in dry soils ; not abundant. 



(188) Bromus sp. ; perennial ; in low meadows ; plentiful on the 

 Wallawallah Eiver. 



(189) Spiraea sp. ; partly shrubby ; leaves orbicular, smooth, ser- 

 rate ; flowers white ; on the low hills and channels of rivulets ; plentiful. 



(190) Cypripedium sp. ; on high grounds, among low brushwood. 



(191) Serapiassp.; perennial; in low wet points of land among grass; 

 flowers yellow, with purple veins. 



(192) Orchis sp. ; flowers small, white, fragrant ; in the same place 

 as the former ; also plentiful. 



(193) Rhus sp. ; flowers dingy- white and yellow ; near springs on 

 the hills ; abundant ; a foot to 18 inches high. 



(194) Trifolium sp. ; perennial ; stem and petiole pubescent ; leaflets 

 very long, underside less pubescent than the stem, and minutely ciliated ; 

 flowers very large and pure white ; a splendid species and it appears 

 not to be included in the flora ; on the low hills ;. plentiful. 



Tuesday, July Uh. Employed since my arrival drying the plants 

 collected, gleaning and putting up seeds ; weather changeable. 



(195) Malva sp. ; perennial ; stem reclining ; leaves reniform, orbicular, 

 scabrous below, pubescent above ; flowers fine yellow ; in low sandy 

 soils, near springs ; not abundant. 



Wednesday, 5th. Made a short excursion on the high grounds south of 

 Wallawallah Eiver, where I collected a few seeds and one species of 

 Oenothera. On my return in the evening I found Messrs. McDonald and 

 MacKay on their way to the sea (the same persons I accompanied last year 

 in August), a few days' march on the Multnomah Eiver. As they are to 

 proceed by water as soon as the boats are in order, and have offered to take 

 anything I have to send to the coast, I shall without delay pack up all I 

 have ready for sending. 



Thursday 6th to Saturday 8th. Employed making a box, airing plants 

 and seeds, and packing the same. Very warm. Thunder in the evenings. 



Sunday, July 9th, 1826. At the junction of Lewis and Clarke's Eiver. 

 Wrote as follows to Jos. Sabine, Esq. : 



DEAR SIR, This day month I wrote you from this place, and at that 

 time I stated how my time would be taken up during the summer. I have 

 a few days ago arrived from a fatiguing journey on the Blue Mountains, 

 spoken of in my last letter, and have been very successful. I have found on 

 those alpine snowy regions a most beautiful species of Paeonia, Lupinaster 

 macrocephalus, 1 a splendid species of Trifolium equally fine,Lupinusargenteus 

 of Pursh, and another species by far the finest of the tribe, not even ex- 

 cepting L. nootkatensis ; has a spike a foot to 20 inches of full blossom of a 

 deep golden-yellow ; I have placed Mr. Turner's name behind it ; the plant 

 4 to 6 feet high. One species of Pentstemon different from any spoken of 



1 Trifolium megacephalum, S. Wats. Bibl. Ind. N. Am. Bot. p. 264. 



