122 LEGUMINOS^E. thermopsis. 



leaves, foliaceous free stipules, petiolulate entire leaflets, and 

 moderately large yellow flowers in terminal bracteate racemes. 

 Bracts herbaceous, persistent. Calyx campanulate, 4-5-cleft to 

 the middle, the lobes equal or the two upper ones united. Upper 

 petal roundish, shorter than the oblong lateral ones, the sides re- 

 flexed, keel nearly sraight, obtuse, equalling the wings. Stam- 

 ens 10, distinct. Style slightly curved ; stigma minute. Pods 

 narrow, compressed, few to many-seeded. 



T. montana Nutt. T. & G. Fl. i, 388. Glabrous below, somewhat 

 silky-villous above: stipules ovate to lanceolate, 1—2 inches long: 

 leaflets oblong-ovate to oblong, 1—3 inches long, obtuse or acute, spar- 

 ingly villous beneath, smooth above: bracts mostly lanceolate: lobes 

 of the calyx triangular one and a half lines long: pods silky-villous, 

 2 inches long or more, nearly straight, erect, short stipitate, linear, 

 10— 15-seeded. Along streams, Brit. Columbia to California and the 

 Rocky Mountains. 



T. gracilis Howell Eryth. i, 109. Sparingly strigose-pubescent 

 throughout: stems slender, erect, 1—3 feet high, sparsely branched above 

 the branches spreading: stipules broadly ovate to lanceolate, usually 

 acute: leaflets oblanceolate, acute at base, petiolulate. 1 — 3 inches 

 long by 8—12 lines broad: racemes short, loosely flowered: bracts 

 ovate, acute, mostly shorter than the pedicels: lower teeth of the 

 calyx triangular, acute, the upper truncate or barely 2-toothed: ovary 

 about 12-ovuled: pods appressed-silky. 2 inches long or more by 2 

 lines broad, on a very short stipe, usually spreading and often falcate. 

 In the mountains of southern Oregon from the sources of the Willam- 

 ette river to northern California. 



T. robusta Howell 1. c. Densely tomentose throughout: stems stout, 

 4— feet high: stipules large, broadly ovate to orbicular-ovate, acute 

 at both ends, 2—3 inches long: racemes long, densely many-flowered: 

 1 tracts ovate-lanceolate, acuminate, longer than the pedicels: teeth of 

 the calyx acuminate, the upper 2- toothed: fruit not seen. In open 

 forests on top of the Coast Mountains on the old Crescent City Wagon 

 road, collected in June, 1884, not since reported. 



T. argentata Greene Eryth. iii, 18. Rather slender, a foot or two in 

 height: all the growing parts, and when young the whole plant 

 silvery-canescent throughout with a very dense and minute silky pu- 

 bescence, the mature part also not indistinctly silky and pale: stipules 

 6 is Hues long, from broadly to narrowly lanceolate and often slight- 

 ly falcate: leaflets of the lowest leaves obtusish and of narrowly 

 cuneate-obovate outline, of the upper from oblanceolate to rhombic- 

 obovate and xovy acute: raceme short and rather few-flowered: calyx- 

 teeth triangular-subulate and about as long as the campanulate tube: 

 petals of the wings and keel notably longer than the banner: pods 

 long, spreading, silky-tomentulose. Modoc County. California, perhaps 

 in southeastern Oregon. 



Tribe .'. Genistea DC. Prodr. ii, 115. Herbs or shrubs with 

 simple or compound estipellate leaves, and papilionaceous flov)ers. 

 Stamens i<>. monadelphous; anthers of two forms. Pod continuous, 

 1-celled, sometimes intercepted internally, but do! jointed. Radicle 

 i nrtt rved or in flexed. 



2 LUPINUS Tourn. L. Gen. n. 865. 

 Herbaceous or rarely shrubby plants with palmately 5-15-folio- 



