FOSSIL FLORA OF ALASKA. 577 



The material in which the plants are preserved is a fine argillaceous sandstone, 

 very well fitted for retaining the impressions. The vegetal remains are in most 

 cases very numerous, even on small fragments of matrix. 



Systematic Enumeration of Species* 

 Chondrites JUiciformis, Lesquereux. 



Lesquereux, Proc. U. S. Nat. Miis., vol. xi, 1888, p. 32, pi. xvi, fig. 1. 



Cape Lisburn ; H. D. Woolfe. 



Chondntes heeri, Eichwald. 



EicHWALD, Gcognost.-Palaeoatoloa; , Bsmerk. ii. Halbinsel Mangi.schlak und Aleutischeu Inseln; 



Saint Petersburg, 1871, p. Ill, pi. iv, fig. 1. 

 Chondrites sp. Heer, FI. Fos.s. Alask., p. 21, pi. x, fig 5. 



Kachemak bay ; H. Furuhjelm. 



EQUISETACE.E 



Equisetam globulosum, Lesquereux. 



Lesquereux, Proc. U. S, Nat. Mus., vol. v, 1882, p. 444; Cret. and Tert. Flora, p. 222, pi. xlviii, fig. 3. 



This species was obtained by Dr W. H. Dall, but the exact locality is not given. 

 As the only localities from which he obtained fossil plants were Cook inlet, Unga 

 island, andChugachik bay, it most probal)ly came from one of these. 



Calamites ambigaus, Eichwald. 



EiCHW.\LD, Geognost.-Paleeoncolog., Bemerk. u. Halbin.sel Mangisehlak and Aleutischen Jnseln ; 

 Saint Petersburg, 1871, p. 114, pi. iv, fig. 9. 



Northeastern coast of Alaska north of cape Jaklok and south of a small stream 

 bearing the same name ; Eichwald. ^ 



FILICES f 



Pecopteris denticulata, Heer. 



Lesqueueux, Proc. U. S. Nat. Mus., vol. xi, 1888, p. 32. 

 Cape Lisburn ; IL D. Woolfe. 



Plcrla sitkcnsisj Heer. 



Heer, FI. Foss. Alask., p. 21, pi. i, fig. 7a; P^h'iiw.vld, Gcogno.st.-Palseontolog., Bemerk. ii. Halbinsel 

 Mangi.schlak, und Aleutischen Inseln; Saint Petersburg, 1871, p. 112. 



Island of Kuiu, near Sitka; H. Furuhjelm. 



Osinmida doroschkiana, Goppert. 



Gori'ERT, Abhandl.-d. Scliles. Gesell. f. Vaterland-Cult., 1801, pt. ii, p. 203 ; Eichwald, Geognost.-Palte- 



ontolog., Bemerk. ii. Halbinsel Mangisehlak und Aleutischen Inseln, p. 112, pi. iv, figs. 2, 3. 

 Os7nunda toreUi, Heer, Lesquereux, Proc. U. S. Nat. Mus., vol. v, 1882 (1883), p. 444, pi. vi, figs. 3-6. 



Unga island ; Lieutenant von Doroshin. Coal Harbor, Unga island ; W. H. Dall. 



*The compiled descriptions of the old species as well as descriptions of the new forms are 

 omitted from the following list. They may be found in the Proc. U. S. Nat. Mus , vol. xvii, pp. 

 211-231. The biiiliographic citations refer exclusively to the occurrence of the various species in 

 ,\laska, and are not to be regarded as indicating the complete synonymy. 



