38 
THE BOTANY OF THE ROUTE. 
tical or narrowly oblong, ( 1-11 inch long, 3—3 inch wide,) some glabrate above, flowers smaller. 
Little Muddy river, August 10. This is perhaps the P. campestris , Nutt., which I have never 
seen; but the leaves of that species are said to be only one or two lines broad. Fruiting spe¬ 
cimens are desirable. 
PSORALEA CUSPIDATA, Pursh. 
PSORALEA ESCULENTA, Pursh. 
Amorpha fruticosa, Linn. 
Amorpha nana, Nutt., ( microphylla , Pursh.) 
Amorpha canescens, Nutt. 
Petalostemon violaceum, Michx. 
Petalostemon candidum, Michx. 
Trifolium stoloniferum, Muhl. 
Trifolium pratense, Linn. 
Trifolium repens, Linn. 
Hosackia Purshiana, Benth. 
Astragalus caryocarpus, Ker. 
Astragalus gracilis, Nutt. 
Astragalus Missouriensis, Nutt. 
Astragalus adsurgens, Pall., var. robustior, Hook. Astragalus striatus, Nutt, in Torr. and 
Gray, FI. 1, p. 230. Apparently very abundant on the Upper Missouri, the specimens in flower 
only; fruit not seen. This is evidently only a larger form of Hooker’s A. adsurgens , which 
seems to be that of Pallas also. The lower stipules cohere more or less opposite the petiole, 
but the upper ones are distinct. 
Astragalus Canadensis, Linn.? in flower only. 
Astragalus racemosus, Pursh. 
Astragalus bisulcatus, Gray. (Plate I.) Plicica bisulcata, Hook. FI. Bor.-Am., 1 , p. 145 t 
Specimens with mature fruit, of which I give a figure. 
Astragalus pectinatus, Dougl. Phaca pectinata , Hook., 1. c. 54. The ripe fruit is much 
blunter and thicker than in Hooker’s figure. 
Astragalus filifolius, (Plate I.) Pliaca longifolia , Nutt.; Psoralea longifolia, Pursh. The 
name longifolius being preoccupied in Astragalus, this may take the more characteristic name 
of A. filifolius. 
Oxytropis Lamberti, Pursh. Various forms, doubtless including more than one of Nuttall’s 
species. 
Oxytropis splendens, Dougl. A most elegant plant, with its crowded silvery silky-villous 
foliage and spikes, and deep blue corollas. It was gathered on the Chippewa river. 
Desmodium nudiflorum, DC. 
Lespedeza hirta, Ell. 
Lupinus pusillus, Pursh. 
Lupinus perennis, Linn. 
SOPHORA SERICEA, Nutt. 
Thermopsis rhombifolia, Nutt. 
Gleditschia triacanthos, Linn. 
SCHRANKIA UNCINATA, Willd. 
Cerasus Virginiana, DC. 
