] 82 RvDBERG : Further Studies on the Potentilleae 



Bull. Torr. Club, 23: 302. 1896; P. quinquefolia Rydb. Mem. 

 Dep. Bot. Columbia Univ. 2: 76. 1898. 



When I changed P. nivca pentapJiylla Lehm. to P. nivea quin- 

 quefolia, I did not know that it was identical with Lange's var- 

 S7ihq2iinata. From his description, especially from the words 

 " eleganter pinnatifidis " I was lead to the supposition that it 

 represented the quinate form of var. Altaica. Consequently I 

 referred Lange's var. subqidnata to that variety. As Lange's name 

 is older than my own, it should be adopted. I am well satisfied 

 with the change, as my own as a specific name is a misnomer. The 

 following specimens belong here. 



Greenland : Disco Fjord, 1894, P. Soeimsen, joi ; Akingdlek, 

 1890, N. Hariz, i ; Kingua Orpiksuit, 2; Atanekerdluk and 

 Kuanersuit on Disco, 1871, Tli. Fries; Kingigtok, 1890; N. 

 Hartz ; rocks behind Kuanersuit on Disco, 1898, M. Pedcrsen, 

 2'ji8, 2yi'j, 2yij, 2yi^a, 2"/ 12 ; Disco Fjord, ;^(^o6 ; Skansen, 

 Disco, p.?7 ; Kuganguak Valley, 2j/j and 4g6 ; Vajat-shore, Un- 

 artuarsuk, //j. 



Spitzbergen ; Kap Thorsen, 1896, E. Joergeiisen. 



Potentilla subquinata Pedersenii var. nov. 



Caudex with elongated branches covered by the remains of 

 old leaves ; stems low, less than i dm. high, 1-3-flowered, as well 

 as the petioles covered with long white hairs: leaflets small, 1- 

 1.5 cm. long, broadly obovate :. white silky on both sides and to- 

 mentose beneath, in age more glabrate above, bractlets very nar- 

 row, linear or linear-lanceolate. 



Greenland: Vaigat Assuk, Disco, 1898, M. Pedersen, 4J0 

 (type) and io6ia. Rocks behind Kuanersuit, 2^11, 2^14, 2ji6, 

 and 2'jio ; Ingigsak, ^jj ; Rocks by Mudderbugten, g6j ; Mun- 

 garut, g24 ; all on Disco. 



Potentilla Vahliana Lehm. Mon. Pot. 29 and 172. 1820 



Fine specimens of this species were also in Pedersen's collec- 

 tion. 



Greenland : Vajgat, Assuk on Disco, M. Pedersen 1061b. 

 Lyngmarken by Godhaven, 80; Rocks behind Kuanersuit on 

 Disco, 2'ji^b; Roede Elv, Disco, j^^ib. 



