52 
BOTANY OF THE ROUTE. 
pubescent, its teeth very short; corolla purple; the legume sessile in the calyx, linear, 
acute, glabrous, or minutely puberulent, 8-10 seeded; the narrow valves considerably convex. 
Two forms occur, one rather smaller and more cinereous than the other. Leaflets half an inch 
to one inch long, varying from half a line to two lines wide. Corolla four or four and a half 
lines long. Legume nine or ten lines long, a line and a half wide; neither suture in the least 
introflexed or tumid; the funiculi short. To none of Nuttall’s too numerous species of 
Ilomalobus can this be referred. It most resembles his H. decumbens, but is less rigid, not 
silky-canescent, and has very much shorter and blunter calyx-teeth. It may possibly be the 
obscure Astragalus miser of Douglas, but the pubescence of the calyx is seldom and slightly 
blackish. ’ ’— Gray. 
Lupinus sericeus, Pursh. Common on higher parts of eastern slopes in the pine forest, 
growing three feet high, and in August nearly past flowering. 
L. leucophyllus, Lindl. In similar localities. A very beautiful plant three feet high, with 
long spikes of blue flowers. 
Spirea betulaefolia, Pallas. Collected near 49th° on the Okanagan river, flowering a second 
time in October. Seen also on summit of range in July; 3 feet high. 
Potentilla gracilis, Dougl. Abundant on the prairies mostly east of the range. 
Epilobium paniculatum, Nutt. Common along streams; August; 4 feet high. 
Oenothera albicaulis, Nutt. A single specimen found in flower along the Okanagan river, 
in October, on ground lately burnt over. 
Mentzelia (Bartonia) laevicaulis, Torr. & Gray. Pound in flower on the plains from the 
Wenass river north, to the 49th°; August; 2 feet; yellow. 
Galium rubioides, Linn. Common in damp soil, flowering in August. 
Brickellia oblongifolia, Nutt. Common on branches of the Columbia; flowering August 
20. Odor peculiar and not unpleasant. 
Machaeranthera canescens, Gray, var. (Dieteria divaricata. Nutt.) Common on gravelly 
shores of the Yakima, and other rivers; flowering in August. 
Aster salsuginosus, Rich, var. Rare on banks of Yakima river. Flowering in September; 
a foot high; flowers purple. 
A. multiflorus, Willd. Two varieties collected on the plains in October. Two feet high; 
flowers white. 
Erigeron Douglassii, var ? eradiatum. Sandy pine forest on the table-land, east of Mount 
Adams; August. “As far as can be judged from the poor specimens, this accords pretty well 
with E. Douglassii , Torr & Gray, except that the heads are ray less.— Gray. 
Solidago gigantea, Aiton. Common along streams on east side, growing 6 feet high. 
Linosyris albicaulis, Torr. & Gray. Near Yakima and its branches, flowering in September, 
when this and a few other composite were the only plants showing signs of life; 5 feet high 
and very ornamental. 
L. viscidiflora, Hook. Found common along Snake river in November, but not seen 
northward. Accords with L. viscidiflora , except that the flowers in these specimens were not 
viscid. A large shrub much less beautiful than the last. 
Grindelia discoidea, Nutt. Banks of the Columbia, near latitude 48°; flowering in Septem¬ 
ber a foot high. “Not the species so called by Hooker and Annot; which is G. anomala , DC. 
This specimen has heads as large as those of G. squarrosa, from which, except in the want of 
