386 _ SMITH: STUDIES IN THE GENUS LuUPINUs—IX 
calyx-lip 2 mm. long, lower 3 mm. long; pods 10-12 mm. long, 3 
mm. wide, much constricted, suggesting those of Vicia tetra- 
sperma; seeds more often four, but sometimes five, scarcely 2 
mm. long by about 1.5 mm. wide, heavily marked. 
CALIFORNIA. Santa Clara County: Wright, June, 1921, 
C. P. Smith 3405 (Type, DS; type-duplicates CA, G, UG, CFS. 
This is a very odd extreme with the aspect of a good species, 
but undoubtedly to be considered a variety of L. bicolor. 
6g. Lupinus bicolor trifidus (Torr.) comb. nov. [Fic. 91.] 
Lupinus micranthus trifidus Wats. Proc. Am. Acad. 8: RAs. Feo 
Lupinus trifidus Torr.; Wats. Proc. Am. Acad. 12: 250. 1877. 
Watson’s second characterization of this form is as follows: 
Although I once (Muhlenbergia 6: 137. 1911) held this to 
be a distinct species, I now see no substantial excuse for so 
treating it. Its relationship, however, is evidently with L. 
bicolor rather than with L. micranthus. Its deeply trifid lower 
calyx-lip is its one outstanding peculiarity. 
Seemingly peculiar to the San Francisco and Monterey 
sandy areas, its occurrence at San Juan, San Benito County, 
calls for special consideration. Elmer’s specimens show a habit 
and stature not at all like the usual plants, and the calyx char- 
acter (see figure) was not recognized by me until dissection of a 
flower was made. In May, 1922, I visited San Juan to study 
this variant in the feld: but I found vars. tridentatus and Piper- 
smithti only. While Elmer’s plants may represent a non- 
persisting mutation from the common var. tridentatus, | hold 
the opinion that they are mere non-persisting climatic or soil 
variants originating from seed casually introduced from the 
Monterey region, San Juan being on the much traveled San 
Francisco-Monterey highway. 
: CALIFORNIA. Monterey County: Del Monte, May, 1888, 
B. F. Leeds (DS): same, March, 1921, C. P. Smith 3241 and 
