172 SMITH: STUDIES IN THE GENUS LUPINUS 
Simple or branched well above the base, foliage 
mostly ope 
yx 7-8 mm. ge petals not yellow. 
Banner 8 mm. wide; lower calyx-lip te 
the two teeth slender and parallel. 6a. typical densiflorus. 
Banner 6 mm. wide; lower calyx-lip with 
broad sinus and a vestigial tooth. 6b. var. stenopetalus. 
Flowers 16-19 mm. long; calyx 11-12 mm. 
g; Danner 15-17 mm. long; petals 
usually not yellow, often rose-tinted. 6c. var. perfistulosus. 
Flowers 13-15 mm. long; calyx 9 (rarely 
10) mm. long; banner 14 mm. long; petals 
evidently yellow, often reddish- or pur- 
plish-tinged at the edges. 6d. var. Menziesii. 
Much branched at or near the base, the foliage 
ngested. 
alyx bracteolate; lower lip obtuse, the teeth 
et and diverging; petals drying a dark 
‘ose-purple. 6e. var. latilabrus. 
ok spears lower lip -acutish, the teeth 
small an ; petals drying a rich blue. 6/. var. Tracyi. 
Leaflets almost ee blackening in dryi yx 
bracteolate, lower lip acute and entire or palo 
two- to three-toothed. 6g. var. glareosus. 
Pubescence of stems and peduncles 1-1. 5 mm. long, 
spreading or retrorsely spreading. 
Lower calyx-lip nearly straight, inconspicuously or not 
at all subsaccate and bent near base. LACTEI. 
Acaulescent or nearly so, commonly simple with 
contracted ra: a rare claw. 6h. var. lacteus. 
Keel evidently curved; banner gradually con- 
tracted into a poorly defined claw. 6l. var. vastiticola. 
Stems and_ branches a the branches 
usually all floriferou 
Flowers 14-16 mm. das banner 15-16 mm 
long; calyx conspicuously nities 
spreading, about 1 mm. long. 67. var. sublanatus. 
Flowers 12-14 mm. long; banner I1-14 mm. long. 
Calyx 7 mm. long; banner rather abruptly 
contracted into a well-defined claw; keel 
nearly straight. 6j. var. McGregori. 
Calyx 8 mm. long; banner gradually con- 
tracted into a poorly defined claw; keel 
evidently curved. : 6k. var. altus. 
Lower calyx-lip usually distinctly subsaccate and bent 
near base; flowers 13-19 mm. long, banner 13-16 
mm. long, calyx 8-10 mm. long. 
