96 SMITH: STUDIES IN THE GENUS LUPINUS—X 
long; leaves several to many, thick and fleshy or rather thin, 
appressed geist below, glabrous or sparsely hairy above: 
petioles 5-8 cm. long; stipules subulate, often purplish-brown; 
leaflets five a seven, linear-oblanceolate to oblanceolate, 15-40 
mm. long, by 2-6 mm. wide; peduncles 3-6 cm. long; racemes 
I-8 cm. Bok verticils two to seven, but usually three to five; 
flowers few to many, 5-8 mm. long; bracts subulate, purplish- 
brown, early deciduous; peaitele stout, I-2 mm. long; calyx 
Peng ie ae minutely bracteolate, upper lip bifid, about 3 
ong, lower lip broad, minutely three-toothed, 3-4 mm. 
tae g, three- pte petals blue peed white, banner 6-8 mm. 
long, cuneate-obovate to spatulate, the purple-dotted white 
center often turning violet, the sides only slightly reflexed, 
ngs 5-6 mm. long by about 3 mm. broad, keel short and broad, 
nearly straight along the upper edges, ciliate above the middle, 
VEU G 
Ser SS 
Fig. 94. Lupinus MICRANTHUS Dougl. 1. A. A. Heller 10,100, Oregon, 
(CPS). 2. C. P. Smith 3262, Santa Cruz County (CPS). 3. B. Dold ror, 
San Francisco (CPS). 4. J. W. Congdon, Toulumne County (US 466,502). 
the blunt acumen not well defined: pods 25-30 mm. long by 5-6 
mm. broad, appressed-hairy, ovules mie to seven; seeds oblong, 
rather thick, about 3 X 2 mm., gra aa Rin kue’d much 
mottled and often with marginal or eset line 
Since the original description of L. micranthus has been so 
recently republished by Heller (Muhlenbergia 7: 2. 1911), 
I will not reproduce it here. Neither the original description 
nor plate leaves any doubt in my mind as to the species to which 
this name must be applied. Just one descriptive phrase given 
by Lindley, namely: ‘keel falcate, acute,” has made me hesitate 
at times; but the lower edge of the keel is much curved, as seen 
in many undissected flowers, while dissection shows the upper 
edge to be nearly straight. I have examined over one hundred 
collections of the species and hundreds of plants in the field, 
and fail to find first-class excuse for retaining L. polycarpus 
even as a variety. It is certainly a mere ecologic form of more 
