198 Smit: STUDIES IN THE GENUS LuPpInus—VII 
indicated variations in the keel. Four of these groups, namely, 
the Sparstflort, Stiversiani, Concinni, and Subcarnost, have been 
treated in the last two papers of this series (Bull. Torrey Club 
47: 487-509. 1920; 48:219-234. 1921). This paper will con- 
sider the Succulenti and one species of the Micrantht. 
SUCCULENTI 
The one species included here is so distinct from all the other 
annuals of our region that I do not feel justified in placing it in 
any of the other groups recognized. The ciliation of the keel 
is too constant to be ignored, though nowhere properly described. 
This is the group some years ago indicated by me under the 
name Affines (Muhlenbergia 6: 134. 1911). 
a. Lupinus sucCULENTUS Dougl.; C. Koch, Wochenschrift 
Gaertn. Pflanzenkunde 4: 277. 1861. ec 76.| 
tout, succulent or fistulous, 2-6 dm. tall, branched, near] 
glabrous or sparsely appressed-pubescent rarely anaes pte 
several; petioles slender, 6-12 cm. long, o o three times as 
long as their leaflets, ecla cgromaesion = mm. 
long, the free part widely divergent; leaflets seven to nine, 
at apex, usually grag glabrous above, sparsely appressed- 
0-70 m i 
2-8 cm. long, racemes 6-30 cm. long, flowers subverticillate in 
subappressed- ore the upper lip deeply two-toothed or 
bifid, about 5 mm. long, the lower lip lanceolate, entire and acute 
or three- toothed, 7-8 mm. long; banner suborbicular, about 
3 mm. including the claw, glabrous, blue with yellow 
pose turning violet, or rarely bluish white, wings 12-14 mm. 
long, about 8 mm. wide, blue or rarely nearly white, more or 
€ 
Siherniss whitish; pods ab 50 mm lon g, 9-10 mm. wide, 
loosely pubescent. or villods sith hairs o. 5 to 1.5 mm. long, 
ovules eight to ten; seeds oblong, 3.5-5 mm. long, much marbled 
-with dark brown, with a pair of contiguous whitish spots 
embracing the raphe, the hilum deeply sunken in a protruding 
ring: axial root normally vertical. 
This is the plant that has been known as L. affinis Agardh, 
since Watson reviewed the genus in 1873 (Proc. Am. Acad. 
8: 517), but the specimens so marked in the Lindley Herbarium 
