March 14, 1 910 21 



little more in length, but is depressed below the apex, claw 

 somewhat blunt spurred; wings rather widely inflated, 8 mm. 

 deep, united below the apex for 4 mm., from thence open below 

 and exposing the keel, the upper edges with a broad and shal- 

 low groove on either side; keel strongly curved, 5111111, deep at 

 the middle, glabrous, purple tipped: pods 3.5 cm. long or less, 

 1 cm. wide, white woolly, the hairs short and not remarkably 

 dense: seeds large, 5 mm. long, 4111111. broad, slightly flattened, 

 gray, mottled and marbled with brown, with a more or less dis- 

 tinctly marked oblique brown line. 



The type, in the herbarium of the Nevada Agricultural 

 Experiment Station, is Heller 9902a, collected July 29, 1909, 

 on Alt. Rose, Washoe county, Nevada, at an elevation of 9650 

 feet. It is abundant at that elevation on the northern flank of 

 the mountain in wet places, growing in company with Castilleja, 

 Elephantella, Satix, and other moisture loving plants. 



Other specimens from Nevada are: Baker tjj6 from Snow 

 valley, Ormsby county, and 1349 from Clear Creek canyon, 

 Ormsby county, distributed as "Lupinus procerus Greene, n. sp. 

 f." These are both fragmentary, showing only the upper part 

 of the plant, hence neither of them were selected as the type. 

 Kennedy 1186, collected August 17, 1905, is from type locality, 

 and is labeled L. rivularis. The description of the pods and 

 seeds is taken from Kennedy 97-5, collected at Glenbrook on 

 Lake Tahoe, October 31, 1904. 



This species is related to L. elongatus, but differs in its 

 thicker, less pointed glaucescent leaves, and especially in the 

 flower, which, although of the same color, is of a different shape 

 and has a much more evident spur. The pubescence of the 

 calyx is more appressed and the lobes entire. The edges of the 

 banner while turned back and parallel do not meet and inroll, 

 and the claw of the wing is very short. The pods are broader, 

 the pubescence much shorter, more appressed, gray instead of 

 tawny, and the larger seeds gray and marbled instead of a uni- 

 form chocolate-brown. 



