Vor. II.J PEA FAMILY. 269 
1. Lupinus perénnis L. Wild Lupine. 
(Fig. 2057.) 
Lupinus perennis Y,. Sp. Pl. 721. 1753- 
Perennial, erect, more or less pubescent, branched, 
1°-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, 
1/-114/ long, 3/’-6’’ wide, appressed-pubescent or 
glabrate; raceme terminal, peduncled, 6’—10’ long, 
rather loosely flowered; pedicels 3//-6’’ long; flow- 
ers blue, sometimes pink, or white, 6’’-8’’ long; pod 
linear-oblong, very pubescent, 114’ 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 perénnis occidentalis S. Wats. Proc. Am. Acad. 
; 8: 530. 1873. 
Villous-pubescent all over. Michigan and Wis- 
consin, 
2. Lupinus Platténsis S. Wats. 
_ Nebraska Lupine. (Fig. 2058.) 
Lupinus ornatus var. glabratus S. Wats. 
Proc. Am. Acad. 8: 528. 1873. Not Z. 
glabratus Agardh. 1835. 
Lupinus Plattensis S. Wats, Proc. Am. 
Acad. 1'7: 369. 1882. 
Resembling the preceding species, 
perennial, 1°-1%° high, branching, 
villous or appressed-pubescent, the 
living plant with a glaucous appear- 
ance; leaflets 7-10, oblanceolate, spatu- 
late or narrowly oval, 1/-1 14’ 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 argénteus Pursh. Silvery 
Lupine. (Fig. 2059.) 
Lupinus argenteus Pursh, Fl. Am. Sept. 468. 1814. 
Lupinus decumbens Torr. Ann. Lyc. N. Y. 2: 191. 1826. 
Perennial, rather shrubby, bushy-branched, 1°-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/’-18’’ long, 2’/-3/’ wide; 
racemes terminal, rather dense, 2’-5’ long; pedicels 
2//-3// long; flowers purple, 4’/-5/’ long; pod silky- 
pubescent, about 1/ 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. 
