SMITH: STUDIES IN THE GENUS LUPINUS 173 
Branches ascending to suberect; whorls five to sev- 
“Fal, 
Calyx commonly bracteolate, the hairs mostly 
—0.5 mm. long. 
Calyx 10 mm. long, lower lip acutish, the 
lon 
a not broader than long. 6m, var. versabilis. 
alyx 8-9 mm. long, lower lip obtuse, the 
gre feos than long. 6n. var. latidens. 
Calyx rarely bracteolate, the hairs mostly tr. 5 
mm. long. 60. var. Dudleyi. 
— short and widely spreading; whorls two 
0 five; flowers and fruits conspicuously secund. 6p. var. persecundus. 
oe busyilous below, the hairs 1.5—-4 mm. long, ebrac- 
PALUSTRES. 
Core cates usually distinctly bent and inflated near 
ase. 
Flowers 13-14 mm. long; calyx 8 mm 
Lower lip two-toothed; keel ne ade 30-60 
6l. var. curvicarinus. 
Lower lip three-toothed; keel stout; plants low. 6u. var. Reedii. 
Flowers 15-17 mm. long; calyx 9-12 mm. long. 
lants low, 8-15 cm. tall, the stems and branches 
hort and usually widely spreading. 6s. var. crinitus. 
0 
Banner rounded or truncate at apex; lower lip 
calyx two-toothed, the middle tooth ves- 
ba or wanting. 6g. var. palustris. 
Banner acute or distinctly contracted apically; 
calyx three-toothed. 6r. var. stanfordianus. 
Lower calyx-lip straight or nearly so, indistinctly or not at 
bent and subsaccate near 
Banner rounded or truncate at apex, 6 mm. wide; 
calyx 8-9 mm. long, two-toothed; plant densely 
villous. 6v. var. trichocalyx. 
Banner mostly angled at apex. 
Banner Ir mm. long, 5 mm. ; calyx 8 mm 
long, lower lip three-toothed, upper lip less than 
2mm. long. 6w. var. barbatissimus. 
Banner 12-15 mm. long; calyx 10-13 mm. long, 
upper lip usually 3-4 mm. long. 
Banner gradually contracted into an undiffer- 
entiated claw; wings naked or nearly so. 6y. var. scopulorum. 
Banner con asia into a J cheaters broad 
basal angle. 
ein ts distinctly thoves weras four-) 
toothed; aes conspicuously ciliate on 
midrib below 6r. var. stanfordianus. 
Lower lip ees. the Bese tooth 
vestigial or wanting; leaflets not con- 
spicuously ciliate. 6x. var. austrocollium. 
