52 BOTANY OF THE ROUTE. 



pubescent, its teeth very short; corolla purple; the legume sessile in the calyx, linear, 

 acute, glabrous, or minutely j^uberulent, 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 

 Homalobus can this be referred. It most resembles his H. deciimbens, 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. Found in flower on the plains from the 

 Wenass river north, to the 49th°; August; 2 feet; yellow. 



Galium eubioides, 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, Tore & Gray, except that the heads are rayless. — Gray. 



Solidago gigantea, Aiton. Common along streams on east side, growing 6 feet high. 



LiNOSYEis ALBICAULIS, Torr. <fe Gray. Near Yakima and its branches, flowering in September, 

 when this and a few other compositas 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. viscidijiora, 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 Aunot; which is 0. anomala, DC. 

 This specimen has heads as large as those of G. squarrosa, from which, except in the want of 



