THE BOTANY OF THE ROUTE. 
61 
Balsamorhiza deltoidea, Nutt. (T.) Common on moist prairies of the interior, nearly to 
top of Cascade range, not west of Coast mountains; July; near Puget Sound. “Root 
edible.” (G.) 
Bidens cernua, Linn. (G.) Not common; in swampy salt marshes along sea-coast; Sep¬ 
tember. 
Bahia lanata, Nutt. (G.) Common on dry plains east of Coast range; June. (Steila- 
coom, S.) 
Madia racemosa, Torr. & Gray. (G.) (Steilacoom, S.) 
Achillea millefolium, Linn. (G.) Abundant everywhere in dry soil. (Steilacoom, S.) 
Coinogyne carnosa, Lesson. (G.) Common on the edge of salt marshes among Salicornia, 
from which it is not easily distinguished when not in flower; July to September; flowers bright 
yellow. 
Tanacetum Huronense, Nutt. (G.) Sandy soil along sea-shore and interior prairies; July. 
Artemisia Douglasiana, Bess. (C.) On steep clay banks about Shoalwater bay; September. 
The only species of the genus I found west of the Cascade mountains; 5 feet high, very stout; 
lower leaves somewhat serrate-toothed on each side; scarcely trifid. 
Gnaphalium decurrens, Ives. (G.) var? Californicum , DC. Common on sandy prairies 
along sea-shore; August; 2 feet. 
G. luteoalbum, Linn. (G.) var ? Sjorengelii, Hook. & Am. In similar situations along sea¬ 
shore; August and September; 1 foot. 
G. palustre, Nutt. (G.) In wet sandy soil along sea-shore; not common; August. 
G. purpureum, Linn., var? ustulatum; Nutt. (T. & C.J Not common; in dry prairie near 
Puget Sound, and with the preceding along coast; July; 1 foot. “A remarkable white floccose 
variety. ’ ’ —Gray. 
Antennaria margaritacea, R. Br. (G.) A very large leaved form, 4 feet high; along coast; 
not rare; September. 
A. Plantagifolia, Hooker. (T.) Dry prairies about Puget Sound; common; July. 
Crocidium multicaule, Hooker. (T.) On grassy hill sides; Straits of De Fuca; April 1; 
flowering when only two inches high, and continuing until a foot high in June; Steilacoom; 
common. 
Arnica amplexicaulis, Nutt. (G.) On rocky banks of streams among the coast mountains; 
July; 2 feet high. 
Cirsium undulatum, Spreng. (T.) “A smoothish form;” common in open dry grounds near 
Columbia river, &c. The only native species west of Cascade mountains; 3 feet high. “The 
root is eaten.”—Gibbs. Canada thistle. 
Hieracium scouleri, Hook. (G.) Common in dry open grounds, burnt woods, &c.; June; 
rays white; 2 feet high. 
Macrorhynchus laciniatus, Torr. & G. (T.) and var. ft. Common on dry prairies about 
Puget Sound; June and July. Flowering; from 4 inches to 2 feet high. “Root edible.” (G.) 
M. heterophyllus, Nutt. (G.) (Steilacoom, S.) 
M. Lessingih, Hook. (G.) Prairies along sea-shore; June. 
Mulgedium leucoph^um, DC. (G.) Common in dry open woods, &c .; August. 
Sonchus asper, Yieill, (G.) Common about cultivated ground. Introduced? 
Campanula linifolia, Hkr. Prairies east of Coast Range; common; June 10. 
C. Scouleri, Hkr. (G.) In shade of fir forests; common; June 20; 2 feet. (Steilacoom, S.) 
