76 MONTANA AGRICULTURAL COLLEGE SCIENCE STUDIES. 



Lupinus alpestris, A. Nelson, Bull. Torr. Bot. Club, 26:127. 

 Differs from L. pseudoparviflorus, Rydb. in its larger flowers, less 

 gibbous calyx, usually denser raceme and leaflets pubescent on both 

 sides. It is found in mountain meadows 7-9000 ft. altitude, while 

 parviflorus is a native of the forests from 5-7000 ft. in the moun- 

 tains. 



Middle Cr., Gallatin Co., 8000 ft., July 30, 1902; Tobacco Root 

 Range, 8000 ft., Aug. 9, 1902. 



Lupinus aphronorus, n. sp. 



Herbaceous perennial, much branched below, about 2 dm. high : 

 leaflets 6-8, narrowly oblanceolate, 2-3 cm. long, silky canescent or 

 subvillous with appressed hairs on both sides ; stipules subulate, 

 petioles about as long as the leaflets: calyx scarcely gibbous ; stan- 

 dard blue with white or yellowish center, 10 mm. long, pubescent keel 

 white, tipped with blue, ciliate : bracts linear, deciduous: fruit not 

 seen. 



Differs from L. flexuosus, Lind. in its smaller size, small leaflets, 

 shorter and denser verticillate racemes, and shorter (4 mm.) pedi- 

 cels as well as its higher altitude. Resembles L.candicans, Rydberg, 

 but has larger flowers, pubescent standard and ciliate keel. 



Divide of Horsefly Pass, Crazy Mts., 8000 ft., July 20, 1902. 



Lupinus argenteus argophyllus, Wats. These more silky pube-, 

 scent forms are more frequent eastward. Wibaux, July 9, 1901 , Six- 

 teen JVIile Cr., Aug. 15, 1899; Deep Cr., Smith River Divide, Aug. 

 14, 1899; Judith Basin, July 24, 1901, F. A. Spragg; E. Flathead Cr., 

 June 22, 1901, W. W. Jones. 



Lupinus axillaris, n. sp. 



Herbaceous, erect perennial, 2-4 dm. high, with short, appressed 

 sericeous pubescence, sometimes villous and spreading on the lower 

 stem; leaflets 8-10, oblanceolate, acute, 3-4 cm. long; petioles near- 

 ly twice as long; stipules lance-linear, I cm. long;, axils of cauline 

 leaves with 2-3 supernumerary leaves of equal size : inflorescence 

 rather lax with 1-4 flowers in verticels: bracts subulate; pedicels 

 8 mm. long; calyx slightly gibbous; flowers blue or purplish, 10 

 mm. long; standard often with yellowish center, glabrous; keel 

 verging to white below, minutely ciliate above : legumes 3-5 seeded, 

 short villous or woolly. 



Nearest L. Rydbcrgii below, of which it may be a more cauline var- 

 iety, with supernumerary axillary leaves, but inhabits the dry east- 

 ern plains. 



