SKETCH OF THE FLORA OF ALASKA. 455 



A. Sitcbcnsis, Bong., Sitka. 



A. alba, Miclix., north western Alaska, where, according to Seemann, it grows 

 from twenty to twenty-five feet high. 



Pinns Cembra, L., Kotzebue sound, vide Bongard and Hooker and Arnott. 



P. contorta. Dough, Sitka. I can hardly think this is P. inops of Ait., as is 

 nlleged by some authors. 



Thuja excelsa, Bong., Sitka and southern Russian America. 



Juniperus nana, Willd., Sitka. 



SALSOLACE^. 



Teloxys aristata, Moquin-Tandon ; Russian America, Pallas. 



Atriplex littoralis, L., Kotzebue and Norton sound. 



A. Gmelini, C. A. Meyer, Bong., Veg. Sitka, Kotzebue sound and Sitka. 



Corispermum hyssopifolium, Stev., Point Barrow to Mackenzie river, PuUen. 



Blitum capitatum, L., Port Youkon, Rev. M. C. Donald. 



TYPHACE^. 



Sparganium natans, L., Kotzebue sound and Ounalashka. 



AKOIDE^. 



Lysichiton Kamtschatcense, Schott ; Draconticum Kamtschatcense, L. ; Sym- 

 plocarpus Kamtschaticus, Bongard ; Arctiodracon Kamtschaticum, Gray on 

 the Botany of Japan, in Memoirs of American Academy of Arts and Sciences, 

 new series, vol. 2, pp. 408-9; Sitka, Bischoff. I give the description and 

 some remarks on the affinities of this plant, by Professor Gray, 1. c. 



Lysichiton Schott. " Spadix nudus, scapum tenninans, cylindricus. Flores 

 hermaphroditi, Perigynium tetraphyllum, basi ovarii adnatum, phyllis obovatis 

 membranaceissubconcavis. Stamina, 4; filamenta plana ; antherae extrorsae, bilo- 

 culares, loculis ovalibus rima longitudinal! ex apice fere ad basim dehiscentibus. 

 Ovarium biloculare, rarius abortu uniloculare; stylus couicus, stigmate depresso 

 simplici termiuatus. Ovu^ in loculis solitaria, disseiraento paulo supra basim 

 inserta, horizontalia, orthotropa. Pericarpia carnosa, 1-2 sperma, in recepata- 

 cnlum commune spongiosum coalescentia, stylo crasso-conico acuto apiculata, 

 Semine hand visa.* — Herbse paludosae, boreali-Pacificse, acaules; foliis magn?s 

 Symplocarpi cum scapo elongato coetaneis e rhizomate crasso horizontal! ortis ; 

 spatha vagiuante superne in limbum lanceolatum seu ellipticum coloratum 

 explauatum. 



From our skunk cabbage the new genus is distinguished by the elongated 

 scape, the membranaceous spatha or sheath, the spiciform spadix, the membra- 

 naceous perianth, the horizontal orthotropous ovules, and probably by the nature 

 of the fruit, which I have not seen mature. I lay little stress upon the bilocular 

 ovary, because one of the cells is occasionally abortive or wanting in the Japan- 

 ese plant, and because the ovary of Symplocarpus itself not rai'ely exhibits ves- 

 tiges of a second cell." Gray, I. c. 



NAIDACE^. 



Zostera marina, L., Ounalashka. 

 Potamogeton natans, L., Sitka. 

 P. rufescens, Besser, Ounalashka. 



* " Semen ventre planum, dorso convexum, ambitu ellipticum. Embrjo macropodua."- 

 Prodromus Systematis Aroideum, p. 420, H. G. Schott. 



