THE BOTANY OF THE ROUTE. 
55 
L. polyphyllus, Lindl. (T.) Common in damp, rich woods near Steilacoom; June, often 5 
feet high, the raceme foot long, color light or dark purple. 
L. nootkatensis, Dough (G.) Sandy prairie along coast north of Columbia river; May 20th, 
flowers blue, with white keel. Differs from the description in wanting the “red and yellow 
veins,” and the leaflets are pubescent on both sides. Stems procumbent, spreading, 2 feet 
}ong. The only species I found along the coast. The L. littoralis , Dough, somewhat resembles 
this, but I 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 Abronia , 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, Dough (T.) Yery 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. flexuosus, Lindl. ? A more shrubby species, growing only in dry woods , and flowering a 
month earlier near Steilacoom. Flowers, larger, more ornamental, violet. Plant three feet 
high. 
Cerasus mollis, Dough (G-.) A common tree on the borders of woods, Ac., 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 cerasiformis, T. & G-. (Gb) A common shrub in wet grounds, especially on 
the brackish marshes of the Chehalis above tide water, Ac., 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, Ac.; Steilacoom, May 15th. 
S. Douglassii, Hkr. (Gr.) Abundant in wet grounds, on prairies, Ac., throughout forest 
regions; July, 5 feet high. Besides the distinctions mentioned, I find the leaves only half as 
large as in S. tomentosa, and the small branches purplish, instead of rusty brown. Panicles 
smaller and denser. 
S. Menziesxx, Hooker. Rare on damp prairie near Steilacoom, near woods. Flowers, June 
20th. Stems simple, two feet high only, ending in large panicles of pale rose colored flowers; 
leaves in this specimen much paler below than above, 1J inch long and J inch wide; flowers 
larger than in S. salicifolia , as found in New Jersey. Whole appearance intermediate between 
this and S. tomentosa. 
S. Arxaefolia, Smith. A common shrub about Vancouver, but rare near Puget Sound; 12 
feet high; June 15th, (Steilacoom, S.) 
S. Aruncus, Linn. (GL) Abundant on exposed clay banks, along coast, and at Puget Sound; 
July 1st. 
Getjm macrophyllum, Willd. (G.) Common in wet shady grounds; May 15th. 
Gexjm triflorum, Pursh. (T.) Rare; on Whidby’s island, (Penn’s cove,) April 12th. Flowers 
richer purple than common. 
Potentilla Norvegica, Linn. 1 l var ., carpels glabrous,” (T.) Rare on dry prairie near 
Steilacoom, June 20th. 
P. gracilis, Dough (G.) B. flabelliformis , Nutt. Abundant on dry prairies of the interior; 
Steilacoom, May 15th, (S.) 
