178 Rydberg : Further Studies on the Potentilleae 



leaf-form ; but diners in the white petals, more acuminate sepals 

 and the denser glandular pubescence. The type was collected at 

 an altitude of about 1600 m. 



California: Pine Ridge, Fresno County, 1900, Hall & 

 Chandler, 138. 



II. SOME SPECIES FROM GREENLAND 

 Some time ago Mr. Morten Pedersen. Assistant at the Botan- 



ical Garden of Copenhagen, requested me to determine a collec- 

 tion of Potentillae collected by him in Greenland. He also kindly 

 sent me several other specimens from the herbarium of the Botan- 

 ical Museum of such forms that I had not seen at all or of which 

 I had had only imperfect material. With the help of this material 

 I have been able to settle several important points and consider- 

 ably modify the disposition in my monograph. 



POTENTILLA MACULATA Pourr. Act. ToloSS. 3 : 316. 1 788 



The following specimens additional to those given in my mono- 

 graph,* belong to this species : 



Greenland: KinguaTasiusok(6i 4 5'), 1889; Scoresby Sund, 

 1891 ; Danmarks, Oe. 1892; Jameson's Land, 1891, N. Hartz ; 

 Godthaabs Fjord, 1883,/.^. D.Jensen; Alangua, 1885, S. Han- 

 sen ; Umanaks Fjord, 1 885, P. Eberlin ; (locality not given), Robert, 

 1 ; Scoresby Sund, 1891, H. Hartz ; f Kvan Valley, behind 

 Ujaragsugsuk, 1 898, Morten Pedersen, 705 ; Ekalunguit Itivnerit 

 429 ; both on Disco. 



Potentilla maculata var. firma Lange, Consp. Ft Groenl. 

 is scarcely that of Lehmann,| although it agrees perfectly 

 with Lehmann's description. The latter was in reality based upon 

 P. alpestris a firma Koch. I have no means to find what this 

 really is ; but Lehmann cites P. alpestris c rubens Hegetschw. and 

 P. rubens Vill. as synonyms. These names represent a coarser 

 plant from Austria, Switzerland and Italy with longer and more 

 acute teeth to the leaves. I think it is a good species distinct from 



* Mem. Dep. Bot. Columbia Univ. 2 : 59. 



tThis sheet is labeled Potentilla maculata Pourr. var. gelida C. A. Mey., as it 

 appears on the label from the fact that a few of the basal leaves are ternate, a condition 

 not uncommon in P. maculata. It has nothing to do with P. gelida C. A. Meyer. 



J Rev. Pot. 120. 



235 



J 



