128 LEGUMINOS. LUPINUS. 
as 7 argenteus Pursh Fl. 468, Silvery canescent :stems erect or ascend- 
ing, cespitose,1—2 feet high, slender and branching: pubescence minute, 
silky, appressed: stipules small: leaflets 5—8, linear-lanceolate, 1—2 
inches long, acute, smooth above or nearly so, about equalling the pet- - 
ioles: racemes 2—6 inches long, nearly sessile: flowers subverticillate 
or scattered; pedicels 1—2 lines long; calyx campanulate, gibbous but 
not spurred at base, upper lip broad, 2-toothed, the lower subentire, 
slightly longer; petais blue or cream-color, equal, 3—4 lines long,; the 
upper one very broad, naked or subpubescent, keel naked or suliiaaes 
ovules 3—5. Plains of the Columbia and Snake rivers. 
** x Dwarf, short stemmed, mostly cespitose: racemes mostly | 
short and dense: bracts subpersistent ; tlowers subverticillate, short- 
peduncled : calyx with the upper lip deeply cleft, the lower 3- toothed, 
keel ciliate: ovules 3—6: pods hairy, 1—4-seeded. 
L. cespitosus Nutt. T. & G. Fl. i, 376. Stems very shor. and cespi- 
tose: pubescence dense, villous, appressed: leaflets 5—7, oblanceolate, 
6—12 lines long, acute, the petioles thrice longer: racemes sessile, 
shorter than the leaves: bracts setaceous, exceeding the calyx; petals 
pale blue, equal, 3—4 lines long. the upper one narrow, 2 lines broad: 
pods 6 lines long. Hastern Oregon to Colorado. 
L. aridus Dougl. Bot. Reg. xv, t. 124. Stems cespitose, 2—3 inches 
long, with rather long internodes: pubescence silky-hirsute, fulvous, 
appressed: leaflets 5—7, oblanceolate, acute, 9—12 lines long, the pet- 
ioles 3—4 times longer: racemes dense, 2—3 inches long, the peduncles 
shorter than the leaves: bracts nearly equalling the calyx: upper lip 
of the calyx shortly toothed, the lower subentire petals purple, 5 lines 
long, nearly twice longer than the calyx, the elliptical upper one usual- 
ly shorter: pods 5 lines long,very hairy. In sandy or gravelly places, 
Washington to California. 
L. Lobbii Gray in Herb. Watson Il. ¢. 533. ZL. aridus var. Lobhbii Wat- 
son. Stems cespitose, 1—3 inches long, leafy: pubescence silky, ap- 
pressed: leaflets 5—7, oblanceolate to obovate, 6—S8 lines long, the pet- 
ioles 2—3 times longer: racemes dense, 1—2 inches long, peduncles 
shorter than the leaves: bracts nearly equalling the calyx: upper lip 
of the calyx deeply bifid, the lower slightly trifid; petals purple, the 
RE one orbicular. In alluvial prairies and hillsides, Washington to 
alifornia. 
L. minimus Dougl. Hook. Fl. i, 163. Appressed silky-villous, 3—6 
inches high: leaflets 5—9, obovate or lanceolate, 3—8 lines long, mostly | 
acutish, the petioles 3—4 times longer: pedicels equalling or exceeding 
the leaves: bracts short, deciduous: calyx half the length of the 
petals, upper lip deeply bifid: ' petals purple,4—5 lines long, equal, the 
upper one orbicular. Bastern Oregon and Washington. 
L. Cusickii Watson Proc. Am. Acad. xxii, 469. Canescent theonale 
out with soft appressed hairs: stems 2—4 inches high, much branched 
from the biennial or perennial root: leaflets 5—S8 oblanceolate, slightly 
less villous above, 3—9 lines long, the petioles usually elongated: ped- 
uncles mostly very short, the loosely few-flowered racemes shorter than 
the leaves: flowers purple, 3—4 lines long: calyx narrowly lobed 
1—3 lines long; upper petal glabrous, keel ciliate: pods villous with 
short appressed hairs, 2—3 seeded, 4—5 lines long. On sterile hillsides, 
Union County, Oregon. 
L. Breweri Gray Proc. Am. Acad. vi, 334. Stems 2—6 inches long, 
from a spreading branched woody caudex, very leafy: pubescence 
dense, villous, appressed: leaflets 7—10 obovate. obtuse, 4—6 lines long, 
the petioles 1—2 times longer: racemes very short; peduncles equall- 
ing the leaves: bracts short; lips of the calyx nearly equal, the upper 
