Rydberg : Studies on the Rocky Mountain Flora 242 



spatulate, 10-18 mm. long, entire or nearly so ; stem leaves ovate, 

 about I cm. long, sharply dentate or entire : raceme elongated : 

 pedicels slender, in fruit about i cm. long, erect : petals white, 4-5 

 mm. long : pod (in the specimen not fully developed) ovate, densely 

 but finely pubescent, much shorter than the pedicels : style 0.75 

 mm. long. 



This species belongs also to the D. incana group, but differs 

 from that species in the elongated peduncle, long pedicels, short 

 pubescent pod and large petals. 



Alberta: Valley below Mt. Aylmer, 1899, W. C. McCalla, 

 226^ (type in herb. N. Y. Bot. Gard.). 



Draba Columbiana sp. nov. 



Perennial ; with a cespitose base, sparingly and finely stellate 

 and ciliate on the margin of the leaves : stems slender, about 2 

 dm. high, simple: basal leaves many, oblanceolate, 10-15 mm. 

 long, denticulate or entire ; stem leaves ovate to lanceolate, about 

 I cm. long denticulate : raceme elongated, pedicels slender, ascend- 

 ing, 5-7 mm. long in fruit : flowers small ; petals slightly over 2 

 mm. long, white : pods linear-oblong, finely pubescent, over i cm. 

 long, style very short. 



This species resembles much the preceding in habit, but the 

 flowers are much smaller and the pods longer. 



British Columbia: Revelstoke, i^^o, John Macowi {iypQ in 

 Herb. Columbia University). 



Geranium Pattersonii sp. nov. 



Cespitose perennial with a thick root and short caudex : stems 

 ascending or diffuse, 2-4 dm. long, densely glandular villous with 

 long spreading hairs, petioles of the basal leaves 5-10 cm. long, 

 also glandular villous ; blades reniform in outline, about 3 cm. 

 broad, glandular villous on both sides, deeply 5-7-cleft ; lobes 

 broadly obovate-cuneate, 3 -toothed ; teeth broadly ovate, abruptly 

 short-acuminate : stem leaves similar, but short-petioled or the 

 uppermost subsessile : pedicels and calyx glandular long -villous ; 

 the former in fruit 1.5-2 cm. long: sepals in fruit about 8 mm. 

 long, oval with a short bristle-tip about i mm. long : petals obo- 

 vate about i cm. long, light purple, or rose color, with darker 

 veins : style in fruit about 2 cm. long, glandular-pubescent ; beak 

 about 4 mm. long : carpels pubescent : seeds finely reticulate. 



This species is perhaps nearest related to G. Parryi (Engelm.) 

 Heller, but is lower, more densely glandular, has broader and 



