174 SMITH: STUDIES IN THE GENUS LUPINUS 
DENSIFLORI 
6a. LUPINUS DENSIFLORUs Benth. (typical). 
Pubescence less than 1 mm. long; verticils six to nine; calyx 
about 8 mm. long, with short inconspicuous appressed pubescence, 
lower lip barely 3 mm. wide, acute, the two 
slender teeth with a very narrow sinus; petals 
white, tinted or veined with violet. or rose, 
banner 14 mm. long, 8 mm. wide, keel 12 mm. 
long, relatively slender. Seed not seen. 
CALIFORNIA. Sonoma County: Santa Rosa, 
2 June, 1902, A. A. Heller 5630 (DS, US, PA, 
NY, G). Napa County: Conn Valley, Napa 
River Basin, 1 May, 1894, W. L. Jepson (UC). 
Santa Clara County: Stanford University, 5 
May, 1895, Cloud Rutter 173 (UC 308269, mid- 
dle and right-hand specimens only). County 
not given: Taylor Mountain, 20 Apr., 1898, M. 
Fic. 18. Lupmsus - Baker (UC). 
th. . : 
DENSIFLORUS Bently 65, Lupinus densiflorus stenopetalus var. nov. 
A. Ay Hed 5630 [ 
(US 416650). Fic. 19.] 
Vexillo gracillimo, 13-14 mm. longo, 6 mm. 
lato, ungue gracili prope 2 mm. lato, contracto; calyce 8 mm. 
longo, labio inferiore bidentato, sinu lato dentis vestigio in- 
structo, dentibus curvis; semina non vidi. 
Petals white, more or less 
rose-purple edged, the banner 
unusually narrow, about 6 mm. 
wide, with the claw only 2 mm. 
wide; lower lip of the calyx ee / \ 
two-toothed, the teeth curved Se 
and a vestigial median tooth tl 
usually present. Seed not Fic. 19. Lupmvus pENSIFLORUS STENO- 
seen. PETALUS C. P. Smith. A. A. Heller 7385 
Cauirormia. Santa Clara ‘> 4%): 
County: Los Gatos, 7 May, 1904, A. A. Heller 7385 (Typr, US 
468403; type-duplicates, PA, NY, G). San Mateo County: San 
Francisquito Canyon, 27 May, 1905, F. Grinnell (US). 
Stenopetalus, Greek for “slender petal,” refers to the very 
narrow banner. 
I cm. 
