March 14, 1910 



2.S 



inside, 3 mm. deep at the middle, shortly bearded and purple on 

 the tipper half: pods ovate-oblong 7 mm. long, 4111m. wide, 3- 

 seeded: seeds roundish, somewhat flattened, 2 mm. across, whit- 

 ish, unspotted, smooth. 



Figure 4. Floral parts of Lupinus alpinus, enlarged. 



The type, in the herbarium of the Nevada Agricultural 

 Experiment Station, is Heller pp/ja, collected July 29, 1909, 

 on Mt. Rose, Washoe county, at an elevation of 9650 feet, where 

 it is abundant, growing in open forests of Pinus albicaulis, in 

 granitic gravel. Its tipper limit is at 10100 feet, where it is 

 found at the edge of the timber line on a warm southeasterly 

 exposure. I have some recollection that it is also found above 

 timber line in the depression or saddle on the north side of Mt. 

 Rose proper. This is above the granite, the formation being 

 slate or shale. 



This species is near the Californian L. Lobbh\ a plant that 

 was very imperfectly described, but ours differs from the type of 

 that species in having a smaller and narrower flower, although 

 the calyx is practically the same. Dr. B. L. Robinson, of the 

 Gray Herbarium, has kindly sent me flowers from the type of 

 L. Lobbii. L. alpinus is peculiar in having a bractlet on the 

 outside of the calyx below the sinus, though so obscured by the 

 pubescence that it is easily overlooked. The species has as yet 

 been found in Nevada only on Mt. Rose. 



