Vox,. II.] 



PEA FAMILY, 



i. Lupinus perennis L. Wild Lupine. 

 (Fig. 2057.) 



Lupinus perennis L. Sp. PI. 721. 1753. 



Perennial, erect, more or less pubescent, branched, 

 i-2 high. Leaves slender-petioled, 2 / -3 / broad, 

 leaflets 7-11 (commonly about 8), oblanceolate, ses- 

 sile or nearly so, obtuse and mucronate at the apex, 

 I'-iX' l n g> 3 // ~6 // wide, appressed-pubescent or 

 glabrate; raceme terminal, peduncled, 6 / -io / long, 

 rather loosely flowered; pedicels 3 // -6 // long; flow- 

 ers blue, sometimes pink, or white, 6 // -8 // long; pod 

 linear-oblong, very pubescent, i%' long, 4 // wide, 

 usually 4-5-seeded, the valves coiling at dehiscence; 

 style subulate. 



In dry, sandy soil, Maine and Ontario to Minnesota, 

 Florida, Missouri and Louisiana. Called also Old 

 Maid's Bonnets and Wild Pea. May-June. 



Lupinus perennis occidentals S. Wats. Proc. Am. Acad. 



8: 530. 1873. 



Villous-pubescent all over. Michigan and Wis- 

 consin. 





2. Lupinus Plattensis S. Wats. 

 \ Nebraska Lupine. (Fig. 2058. ) 



Lupinus ornaius \a.r.glabralus S. Wats. 



Proc. Am. Acad. 8: 528. 1873. Not L. 



glabratus Agardh. 1835. 

 Lupinus Plattensis S. Wats. Proc. Am. 



Acad. 17: 369. 1882. 



Resembling the preceding species, 

 perennial, i-i^ high, branching, 

 villous or appressed-pubescent, the 

 living plant with a glaucous appear- 

 ance; leaflets 7-10, oblanceolate, spatu- 

 late or narrowly oval, I'-i^' long, 3"- 

 5" wide; raceme terminal, 4'-8' long, 

 loosely flowered; pedicels 3 // -5 // long; 

 corolla blue, 6 // -8 // long, the standard 

 with a conspicuous dark spot. 



Plains. Nebraska, Wyoming, Dakota. 

 June-July. 



3. Lupinus argenteus Pursh. Silvery 

 Lupine. (Fig. 2059.) 



Lupinus argenteus Pursh, Fl. Am. Sept. 468. 1814. 

 Lupinus decumbens Torr. Ann. Lye. N. Y. 2: 191. 1826. 



Perennial, rather shrubby, bushy-branched, i-2 

 high, finely and densely silky-pubescent with ap- 

 pressed hairs. Petioles slender, equalling or the lower 

 exceeding the leaves; stipules minute, subulate; leaf- 

 lets sessile, linear-oblong, acute or obtusish at the 

 apex, narrowed at the base, 9 // -i8 // long, a // -3 // wide; 

 racemes terminal, rather dense, 2'-$' long; pedicels 

 2 //_y/ long; flowers purple, 4 // -5 // long; pod silky- 

 pubescent, about i' long, mostly 3~5-seeded. 



Prairies, western Nebraska and South Dakota to Mon- 

 tana, south to New Mexico and Arizona. The so-called 

 var. argophyllus is a still more silky form, with larger 

 flowers. July-Aug. 



