212 FOSSIL FLORA OF ALASKA— KNOWLTON. vol. xvii. 



dium Tinajorum and he hence regarded the species as belonging totlie 

 Miocene, suggesting that it may have been a transition form from the 

 Cretaceous. 



EQUISETACE^. 



EQUISETUM GLOBULOSUM, L es q u e r en:s: . ' 



LKsqUEKKUX, Proc. U. S.Nat. Mus., Vol. v, 1882 (1883), p. 444; Cret. and Tert. 

 FL.p. 222, PI. XLViii, fiff. 3. 



This species was obtained by Dr. Wm. H. Dall, but the exact locality 

 is not given. As the only localities from which he obtained fossil plants 

 were Cook Inlet, Unga Island, and Chugachik Bay, it most probably 

 came from one of these. It was also obtained in the Bad Lands of 

 Dakota, from which specimens the above-mentioned figure was made. 



CALAMITE8 AMBIGIIUS, EichwaUl. 



EiCHWALU, Gcogiiost.-Paheoiitolog., Benierk. ii. Halbiusel Maugischlak uud 

 Aleutischeu Inselii, St. Petersb., 1871, p. 114, PI. iv, fig. 9. 



Northeastern coast of Alaska north of Cape Jaklok, and south of a 

 small stream of that name; Eichwald. 



This is a small fragment only li inches long and 1 inch wide, showing 

 12 longitudinal ribs. It appears to prove, if it is really a calamite, the 

 presence of true Carboniferous strata in Alaska, but it is so very frag- 

 mentary that I can not but look upon it with question. Goppert, who 

 first recognized its nature, also claimed 1o have observed leaves of 

 Sigillaria, but this, too, requires confinuation. 



FILICES. 



PECOPTEKIS UENTICIILATA, lleer. 

 Lesqukkeux, I'roc. l\ S. Nat. Mus., Vol. xi, 1888, }>. 32. 

 Cape Lisburn; H. D. Woolfe. 



PTERIS SITKENSIS, Heer. 



IIkkr, F1. Foss. Alask., j). 21, PI. i, fig. 7a; Eichwald, Geognost.-Pala'oiitolog., 

 Bemerk. ii. Halbiusel Maugischlak, iiu»l Alentisclieu Inselii, St. Petersb., 

 1871, p. 112. 



Island of Kuiu, near Sitka; H. Furuhjelm. 



OSMUNDA DOROSCHKIANA, Goppert. 



GopPKKT, Abhaudl. d. Schles. Gesell. f. VaterKiiid-Onlt., 1861, Pt. ii, p. 203; 



Eichwald, Geognost.-PalaMjntolog., Bemerk. ii. Halbiusel Maugischlak, uud 



Aleutischeu luselu, p. 112, PI. iv, figs. 2, 3. 

 Osminida Torelli, Heek, Lesquekeux, Proc. U.S.Nat. Mus., Vol. v, 1882 (1883^, 



p. 444, PI. VI, figs. 3-6. 



Unga Island; Lt. v. Doroshin. Coal Harbor, Unga Island; Dr. Wm. 

 H. Dall. 



This species was named by (Tiippert (1. c.) but not adequately de- 

 scribed. It must, however, be the same as tiie 0. TorelUj of Lesque- 

 reux, from the same place, since both these authors speak of the numer- 



