BOTANY OF THE ROUTE. 59 



this, but t met with none of which the roots were used by the Chenooks as food. They do dig 

 in the same place the roots of an Ahronia, which he may have mistaken for those of lupine. 

 This species is said to grow on "rocky shores" which I have never examined. 



L. LAXIFLORUS, Dougl. (T.) Very abundant on dry prairies of the interior, forming shrubby- 

 looking tufts two feet high, the whole plant with a grayish appearance. Flowers pale purple, 

 blue, or white, in racemes 6 — 12 inches long; June 10th, Steilacoom, (S.) 



L. PLEXUOSUS, Lindl. ? A more shrubby species, growing only in dry tvoods, and flowering a 

 month earlier near Steilacoom. Flowers, larger, more ornamental, violet. Plant three feet 

 high. 



Oerasus mollis, Dougl. (G.) A common tree on the borders of woods, &c., 25 feet high. 

 Bark and form of tree very similar to the cultivated cherry. Flowers, April 1st, large, fragrant. 

 Fruit, black, bitter; as large as a pea; ripe in June. 



C. demissa, Nutt. (T.) Banks of brooks near Steilacoom. White, June. Flowers large, 

 many staminate only. 



NuTTALLiA CEKASiFORMis, T. & G. (G.) A common shrub in wet grounds, especially on 

 the brackish marshes of the Chehalis above tide water, &c., 6 feet high; flowers in March. 

 Whole plant with the odor of Stapshylea trifolia. Berries black, bitter; ripe in July. 



Spirea opulifolia, Linn. Not rare along brooks, &c. ; Steilacoom, May 15th. 

 S. DouGLASSir, Hkr. (G.) Abundant in wet grounds, on prairies, &c., throughout forest 

 regions; July, 5 feet high. Besides the distinctions mentioned, I find the leaves onlj' half as 

 large as in 8. tomentosa, and the small branches purplish, instead of rusty brown. Panicles 

 smaller and denser. 



S. Menziesii, Hooker. Rare on damp prairie near Steilacoom, near woods. Flowers, June 

 20th. Stem simple, two feet high only, ending in large panicles of pale rose colored flowers; 

 leaves in this specimen much paler below than above, 1^ inch long and 5 inch wide; flowers 

 larger than in S. salicifolia, as found in New Jersey. Whole appearance intermediate between 

 this and S. tomentosa. 



S. Ariaepolia, Smith. A common shrub about Vancouver, but rare near Puget Sound; 12 

 feet high; June 15th, (Steilacoom, S.) 



S. Aruncus, Linn. (G.) Abundant on exposed clay banks, along coast, and at Puget Sound; 

 July 1st. 



Geum maceophyllum, Willd. (G.) Common in wet shady grounds; May 15th. 



Geum triflorum, Pursh. (T.) Rare, on Whidby's island, (Penn's cove,) April 12th. Flowers 

 richer purple than common. 



POTENTILLA NoEVEGiCA, Linn. "t;a/-., carpels glabrous," (T.) Rare on dry prairie near 

 Steilacoom, June 20th. 



P. gracilis, Dougl. (G.) P. flabeUiformis, Nutt. Abundant on dry prairies of the interior; 

 Steilacoom, May 15th, (S.) 



P. Anseriija, Linn. (G.) Abundant in salt meadows along the coast; June to August. I 

 never met with var /3. grandis. 



CoMARUM PALUSTRE, Liun. (G.) In brackish marshes, Shoalwater bay; July 10th, not very 

 common. 



Fragaria Virginiana, Ehrh. According to Professor Gray both this and the next two species 

 are found in Washington Territory. My specimens, from various parts of the Territory near 

 the coast, present so many shades of variety that, imtlwut the fruit, I cannot decide on more than 



