442 SKETCH OF THE FLORA OF ALASKA. 



concerning the migrations of plants. The well known tendency of Arctic plants 

 to vary almost indefinitely makes the subject important to the botanists inter- 

 ested in settling that vexed question, what is a species and what its formula. 



PvANUNCULACE^. 



Thalictrum alpimim, L., Kotzebue sound, and Port Clarence. 



Anemone alpina, L., Kotzebue sound. 



A. patens, L. ; Fort Youkon, Antoine Houle. 



A. parviflora, Micnx., Kotzebue sound. 



A. lliehardsoni, Hook., Island of Oimalashka, Kotzebue sound; Youkon river, 

 Dall. 



A. narcissiflora, L., is the A. multifida of Hooker and Arnott in Bot. Beecliey ; 

 fide Seemann in Bot. Herald; from Kotzebue sound to Cape Lisburne, and 

 between Point Barrow and Mackenzie river; island of Ounalashka. 



Hcpatica triloba, Chaix, Sitka. 



Ranimculus Pallasii, Schlecht., Kotzebue sound. 



R. hyperborcus, Ilottb., Norton sound to Wainwright inlet. 



R. Purshii, Richards., Kotzebue sound. 



R. Lai)ponicus, L., Kotzebue sound. 



R. pygmteus, AYahl., Kotzebue sound. 



R. nivalis, R. Br., Kotzebue sound. 



R. Eschscholtzii, Schlecht., Kotzebue sound to Cape Lisburne. 



R. occidentalis, Nutt., (R. recurvatus, Bongard in Vegetation of Sitka, but 

 not of Poir.,) Sitka. 



Caltha palustris, L., var. asarifolia, Ounalashka. 



C. leptoscpala, DC, Sitka. 



(Still a third species, C. arctica, R. Br., may yet be added, as it has been found 

 on Richard's island, in the mouth of the Mackenzie river.) 



Coptis trifolia, Salisb., Sitka. 



C asplenifolia, Salisb., Sitka. 



Acpiilegia formosa, Fisch., A. Canadensis, Bong. 1. c, Sitka. 



Delphinium Menziesii, DC., Kotzebue sound to Cape Lisburne. 



Aconitum Napellus, L., var. delphinifolium, Sitka, Kotzebue sound, Chamisso 

 island, Norton sound, and between Point Barrow and Mackenzie river. 



NTMPH^CE^. 



Nupliar luteum. Smith, Sitka. 



PAPAVEKACE^. 



Papaver alpinum, L. ; P. nudicaule, Norton sound, H. M. Bannister; Kotzebue 

 sound, and from Point Barrow to Mackenzie river. 



PUMAEIACEiE. 



Corydalis pauciflora, Pers., Norton sound, H. M. Bannister, Island of St. 

 Lawrence, Bot. Herald. 



C. glauca, Pursh., Point Barrow to Mackenzie river, Captain Pullen. 



CKUCIEEE^. 



Barbarea vulgaris, R. Br., Sitka and Norton sound. 

 Arabis hirsuta, Scop., Sitka and Ounalashka. 

 A. ambigua, DC, Sitka and Ounalashka. 



Nasturtium palustre, DC, Eschscholtz bay, Ounalaslika; and Youkon river, 

 Dali. 



