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 fuU 

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



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

 Wallawallah Kiver. 



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

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



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



(191) Serapias ST^.; 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 remform, 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 ofiered 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, Lapinaster 

 macrocephalus,^ a splendid species of Trifolium equally fine, Lupinus argenteus 

 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 difierent from any spoken of 



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



