November 29, 1 1 1 > 101 



"Lupin US SULPHUREUS Douglas. This little known plant I 

 discovered growing abundantly in Eastern Nevada, and I think 

 it is quite probable that it will be found to be nearer L. sericeiii 

 than has been supposed. My notes on the flowers were taken as 

 they grew. When the flowers are just opening they are white 

 with a yellow streak in the middle of the banner, which is also 

 flecked with 4 or 5 small purple spots; the whole flower soon 

 tnrns yellow, the middle of the banner deeply so. The calyx is 

 long-spurred, spur and all but the tip of the upper part of the 

 calyx white and streaked with bine, the lower part of the calyx 

 and tips green. It grows 1 to 2 feet high, in clumps from a 

 hard woody root, on gravelly slopes, flowering in June. I have 

 a verv few specimens with a suspicion of blue on the banner." 



L. sulphureus is pn-bably confined to the Blue mountains 

 of Washington and Oregon. It has a very different flower, 

 vv'iich is shorter and rounder, and the banner is not prolonged 

 into a spur, but is merely "sub-gibboso," as originally described. 

 L. calcaratus is easily distinguished from all other species 

 by having the upper calyx lobe colored like the flower, the lower 

 one green, and by the peculiar broad inflation of the wings, that 

 part of the flower being broader than deep, an unusual feature 

 in the genus. No. 9744, mentioned above, is fairly typical, 

 with the exception that the spur is shorter than in Kellogg's 

 tijjue. 



No. 9745 might hastily be passed upon as a hybrid between 

 cakaratus and caudatus. It was gathered with no. 9744, and 

 when the plants were put to press was segregated. When fresh 

 the flowers were pink tinged, the plant less green, and the pu- 

 bescence more appressed. The inflation of the wings is not so 

 low and broad, about intermediate between calcaratus and cau- 

 datus. In the dried state the flowers do not turn yellow, while 

 those of typical calcaratus turn yellow when dry. It has the 

 calyx of calcaratus, with the exception that the upper lobe is 

 more prominently notched, and the banner is of that species. 

 The pubescence is more like that of caudatus, though not nearly 

 so dense. There was no caudatus at the particular place where 

 these specimens were collected, but a few hundred yards bevond 



