SMITH: STUDIES IN THE GENUS LUPINUS 179 
2-dentato, dentibus latis brevibusque, sinu brevissimo; petalis ad 
dimidia terminata roseo-purpureis, ad basin pallidis; vexillo prope 
12 mm. longo, 8 mm. lato, apice rotundato; alis 11 mm. longis, vix 
ciliatis ad basin superne; carina 9-10 mm. longa, paulo curvata; 
leguminibus prope 14 mm. longis; semina matura non vidi. 
Differs from var. Menziesii in the stem being branched at the 
base, the branchlets and foliage congested; whorls few and pedicels 
short and stout; calyx with bractlets, the lower lip relatively wide 
at the blunt apex, the two teeth short and wide; keel not much 
curved; terminal half of petals a dark rose purple when dried. 
CALIFORNIA. Amador County: vicinity of Ione, 200-500 ft. 
alt., June, 1904, E. Braunton 1081 (Tyre, US 469834; type- 
duplicates, NY, UC). 
Latilabrum is Latin for “ broad lip.” 
6f. Lupinus densiflorus Tracyi var. nov. [Fic. 23.] 
Caule ramosissimo ad basin foliis congestis; labio inferiore 
calycis apice acuto bidentato, dentis sinuque gracilibus; petalis 
pallido-carnosis, ad anthesin 
atro-caeruleis cum siccatis; vex- 
illo 12 mm. longo, 8 mm. lato, 
ungue non claro; alis carinaque 
latis: legumina seminaque non 
vidi. | 
Much branched at the base 
with the foliage congested; 
lower calyx-lip acute, the two : cm 
teeth and their sinus narrow; 
petals pale flesh-colored when 
fresh (according to the label), 
largely a rich blue in the pre- : ee 
served specimen; banner 12 mm. 
: Fic. 23. LUPINUS DENSIFLORUS TRACYI 
long, 8 mm. wide, the claw not |p Smith. J. P. Tracy 3280 (UC 
well defined; wings and keel 61546). 
relatively broad. 
CaLiForNIA. Humboldt County: gravel bar of Willow Creek, 
Trinity River Valley, 4 July, 1911, J. P. Tracy 3280 (Type, UC 
161546), labelled “ L. microcarpus.” 
