a 
184 SMITH: STUDIES IN THE GENUS LUPINUS 
gee’s station at Tehachapi, say in April, and follow both through 
until all the seed is matured and the season’s growth is evidently 
completed. Cultural studies would also be of interest; but great 
care would be very necessary in the selection and identification of 
the seed to be used. 
Sublanatus, “almost woolly,” refers to the general pubescence 
of the typical phase of the variety, as represented by the type- 
collection and Mrs. Brandegee’s Tehachapi plant. However, the 
specimens referred here show quite a range of variation in density 
of pubescence, the “least lanate’’ extreme being well represented 
by Abrams & McGregor’s No. 310. This collection I had selected 
as the type of an additional variety, but later decided that this 
variation was not supported by other characters and, evidently, 
was in itself too inconstant to be reliable. In the upper San Joa- 
quin Valley, as at Bakersfield, where the two varieties overlap, 
the nearly straight lower calyx-lip with retrorse-spreading hairs 
should readily distinguish var. sublanatus from the related var. 
versabilis, in which the lower lip is decidedly subsaccate and pubes- 
cent with subappressed hairs about 0.5 mm. long. 
Some other specimens, not placed elsewhere, which may have 
some affinity to the above are: Nacimiento Canyon, San Luis 
Obispo County, 8 May, 1900, J. H. Barber (UC); Knights Ferry, 
Stanislaus County, 9 Apr., 1895, F. W. Bancroft (UC); Linden, 
San Joaquin County, May, 1896, F. W. Gunnison (UC). 
6j. Lupinus densiflorus McGregori var. nov. [Fic. 27.] 
Erectus, super basi prope 10 cm. ramosus, ramis paucis suberec- 
tis, caule ramisque gracilibus nequaquam fistulosis, laxe pubes- 
centibus, pilis pandentibus 1-1.5 mm. longis: foliolis prope 20 mm. 
longis, cuneatis, apice rotundatis vel emarginatis pallido-viridis, 
pilis brevibus albescentibus subter: racemis brevibus, verticillis 
2-3, distantibus; floribus parvis, 12-13 mm. longis, pandentibus ad 
anthesin; pedicellis 1.5-2 mm. longis, gracilibus; bracteis 2-5 mm. 
longis, i picui lyce ebracteolato, 7mm. longo, villoso inferne, 
pilis prope 1 mm. longis, pandentibus vel retrorso-pandentibus; 
labio superiore 2 mm. longo, inferiore obtuso, paulo plus 2 mm. lato, 
2-dentato, dentibus prope 0.5 mm. longis: corolla alba vel pallida; 
vexillo 11 mm. longo, 6 mm. lato, apice rotundato paulo abrupte 
contracto in unguem gracilem 2 mm. latum; alis 10 mm. longis, 
4 mm. latis, non ciliatis; carina 10 mm. longa, recta: leguminibus 
15 mm. longis, pallido-stramineis; seminibus 4 mm. longis, 3.5 mm. 
