322 Rydberg: Studies on the Rocky Mountain flora 



This is related to D. bicolor, but the upper petals are dark blue 

 and the spur is much longer. 



Idaho: Lewiston, April 1896, A. A. & E. Gertrude Heller 

 2Qji (type, in herb. Columbia University) ; region of Coeur d'Alene 

 Mountains, June 24, 1895, Leiberg ioji. 



Delphinium viscidum sp. nov. 



Perennial with a woody root; stem about 3 dm. high, grayish 

 strigose below, densely glandular-viscid above; leaf blades 5-7 

 cm. broad, densely grayish strigose, dissected into narrowly 

 linear lobes; inflorescence branched; sepals dark blue, 12-15 mm. 

 long, oblong, acute; spur 10-12 mm. long, somewhat s-curved; 

 upper petals yellowish, tinged with blue, obtuse, entire; lower 

 petals dark blue, with obtuse, sinuate lobes; follicles densely stri- 

 gose. 



This species is related to D. multiflorum and D. reticulatum, 

 but the leaves are finely dissected as in D. Geyeri and D. scopulorum. 



Wyoming: Near Tie Siding, July 6, 1896, Osterhout (type, in 

 herb. N. Y. Bot. Garden) ; Evanston, August 1878, Harry Edwards. 



BRASSICACEAE 

 Lepidium hirsutum nom. nov. 



Lepidium intermedium v. pubescens Greene, Bot. Gaz. 6: 157. 



1880. Not L. pubescens Desv. 1814. 

 Lepidium medium pubescens Robinson, Syn. Fl. i 1 : 127. 1895. 

 Lepidium virginicum subsp. texanum v. pubescens Thell. Mitt. Univ. 



Zurich 28: 230. 1906. 



Physaria lanata (A. Nels.) Rydb. comb. nov. 



Physaria didymocarpa lanata A. Nels. Bull. Torrey Club 31: 241. 



1904. 



This, I think, deserves specific rank, but P. grandiflora Blankin- 

 ship is nothing but the typical P. didymocarpa. 



Radicula trachycarpa (A. Gray) Rydb. comb. nov. 



Nasturtium trackycarpum A. Gray, Bull. U. S. Geol. & Geog. Surv. 

 2: 233. 1876. 



