Rvdberg : Notes on Rosaceae 385 



coarser pubescence of the stem. The following specimens are re- 

 ferred here: 



California: Descanso, 1897, Parish 4523; Cuyamaca Lake, 

 1903, Abrams 3871; San Jacinto Mountains, Hall 22Q6; Fresno 

 County, 1900, Hall & Chandler 1S2, in part; Laguna Mountains, 

 San Diego County, 1904, Brandegee. 



Some of the specimens belonging to Potentilla dascia were 

 included in P. Blaschkeana in my monograph. Later I referred 

 them to P. glomerata A. Nelson. It is evidently related to the 

 latter, but differs in the open inflorescence and the pubescence, 

 which is much coarser and not at all tomentose, but slightly 

 puberulent as well as hirsute on the lower surface of the leaves. 

 I refer here: 



Washington: 1889, Vasey 320; Ellensburg, 1897, Piper 2736; 

 Wilson Creek, 1892, Lake & Hull 318; Wilson Creek, 1893. 

 Sandberg & Leiberg 315. 



Oregon: Dalles, 1869, Harford & Dunn 1144. 

 Montana: Bozeman, 1892, Mrs. Alderson; 1874, Cones. 

 Potentilla lasia is related to P. Hallii but is characterized by the 

 few and large teeth of the leaves and the oblong-lanceolate instead 

 of narrowly linear-lanceolate bractlets. To it are referred: 



California: Schwartout Canon, San Antonio Mountains, 

 1899, Hall; Bear Valley, San Bernardino Mountains, 1894, Parish 

 3252; Los Angeles County, 1899. 



Dr. Wolf reduces Potentilla Hallii to a variety of P. gracilis, 

 evidently without having seen a specimen. This is not the only 

 case he has treated in that way, for in about half the cases 

 where species have been described by later authors, he has re- 

 duced them to varieties of what seemed to him the nearest species. 

 In habit the plant resembles much more what Dr. Wolf describes 

 under the name P. pulcherrima, than P. gracilis, but it lacks 

 tomentum on the lower surface of the leaves and therefore should 

 be placed near P. etomentosa in the Nuttallianae group. 



Dr. Wolf admits Potentilla etomentosa as a valid species, citing 

 specimens from Wyoming. Not all species so named from Wy- 

 oming belong to P. etomentosa, for some are P. jucunda. The 

 latter he reduces to a variety of P. diversifolia, claiming that he 

 can scarcely separate it from the variety glaucophylla. This 



