178 Rydberg : Further Studies on the Potentilleae 



leaf-form ; but differs 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, ij8. 



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 Potcntillae 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. 1788 



The following specimens additional to those given in my mono- 

 graph,* belong to this species : 



Greenland: KinguaTasiusok(6i°45'), 1889; Scoresby Sund, 

 189 1 ; Danmarks, Oe. 1892 ; Jameson's Land, 1891, N. Harts; 

 Godthaabs Fjord, 1883,/ A. D. Jensen ; Alangua, 1885, 6". Han- 

 sen ; Umanaks Fjord, 1885, P. Eberlin ; (locality not given), Raben, 

 I ; Scoresby Sund, 1891, H. Hartz ; \ Kvan Valley, behind 

 Ujaragsugsuk, 1898, Morten Pedersen, 70 j ; Ekalunguit Itivnerit 

 ^2g ; both on Disco. 



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

 235 is scarcely that of Lehmann,| although it agrees perfectly 

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

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

 really is ; but Lehmann cites P. alpestris c riibens 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- 



t This sheet is labeled Potentilla 7nacnlata Pourr. szx. 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. 



\ Rev. Pot. 1 20. 



