PLANTS FROM ALASKA. 161 



Clauophlebis Ilt'TTONi (Duiikcr) Fontaiiu' ii. coinl). 

 PI. XLl XLIII. 



1846. \t'iir()j>tfns Hiiftoni Dunk.: Monou:r. li. Xoi-ddcutsch. WcaldfiiUililuiii;.. p. '.», 



|)1. viii, fig. 1. 

 184',). Pt'copteiis Ilutfoni (Dunk.) Brongii. : Tableau, p. 107. 

 1869. Ahfhopferis Iluffoni (Dunk.) Schinip.: Pal. Veg., Vol. I. p. oTO [hy lyp. error 



A. Murchisoni]. 

 1874. AhtJiopfcrls Ibifton't (Dunk.) Sehini]).: Op. cit.. Atlas, p. 14, pi. .\.\xi, fig. 10. 

 1888. Aspidhun OerKtaVi Ileer. Lesquereu.x : Proc. I'. S. Nat. Mus., Vol. XI, p. ;32 



in part, cpioail Cat. I'. S. Nat. Mu.s.. No. 'IVM. Lcsciuereux's Nos. i)lS, 920, 



926, 927. 

 1888. Asplnrium Farstn-i Deb. & Ett. ]je.s(|uereii.\: Loc. cit. 



Five .specimens of a large fern were collected by Mr. Woolfe. They 

 are rather poorly preserved and do not show the full character of the 

 plant. Four of these determined by Lesquereux as Aspidiuyn Oersted i 

 Heer and one as Asplcniu))) Fivrsteri Deb. & Ett. The narrower pinnules, 

 occiu'ring on one of the imprints, are not unlike some of those of Aspidiiii/i 

 Oerstedi. The collection of Mr. Dumars contains several large slabs of 

 rock, which show a ntimber of imprints of this form better preserved and 

 more complete than those of Mr. Woolfe. They are also mostly from 

 different parts of the plant. These show that the plant is a fern that 

 can not well l)e distinguished from the fossil that Dunker descrilied from 

 the Wealden of Hanover, with the name Xeuropteris Huttoui. This seems 

 to have been the only specimen ever found. As it is only a small frag- 

 ment it can not show the full character of the plant. Schenk examined 

 this specimen and approved of Schimper's name for it, Alctlioiiteris 

 Hnttoni." He gives a figure of it differing somewhat from that of Dunker, 

 and pi-obably a more nearly correct one. Dimker figiu-es the plant as 

 having two complete pinnae attached to a large rachis, portions of which 

 show the original width. Schenk's figure shows the principal rachis with 

 all of the inai'gin on one side wanting, so that the true width is not seen. 

 The only attached pinna is the upper one, and the end of that is wanting. 

 The next lower pinna has the end preserved, but its full length is probably 

 not given, as the base is defective and the pinna visible is only a ))ortion 



"Foss. Flor. (liT .Vordncstdciitsch. Wcaldeufonnation (Palaeontographica, Vol, XIX, 1S7I;, p. 217 [1.5], 

 pi. xxix |viii], figs. 1, la. 



MDN M.VIII 0.5 11 



