.UKASSIC KI.OKA OF DOl'CI^AS ('OrXTY. OKK(i. 69 



183G. Mitlioptins I'hiUijis'ii (Brongn.) (lopp.: Syst. Fil. Foss., p. ;>04. 



1836. Al<tli'ij)t< ris iitsitj/ns (L. & IF) (iop]).: cip. cil., ]>• 3(17. 



1S3(). I'ohjpiidtUs undans (F. c^ ]F) CJdpp.: oj). cit.. p. 34."). 



1848. Alilhopleris (It'iitlciildtii (Urongii.) Gr.pp.: Index Pal., XdnicncliUor, p. 23. 



1849. Cladophleliis I'Kjutd (I'liill.) Brongn.; 'I'iililcaii, p. Id."). 



186.'>. /'/m.s' I'xjata (PhiU.) liii.: Fanikniutcr dcr -Icl/.lwrlt . p. IFl. 



186.5. PU'rift imignis (L. & IF) Ett.: op. cit., p. 114. 



1874. CladophlrlHs hislgtvs (L. & H.) Schinip.: PaF V('g., Vol, II F ]). 50.5. 



1876. Claih.phlrhis dnitn-ulata (Brongn.) XaMi. [non Font. J: Bidrag till Svcrigos 



Foss. Fl., Vii.xtcr fr. Riit. Form, vid Palsjo, ]). !'.>. 

 1N78. A.spltn'tuin. pffruxcliuirnsc Fleer: Fl. Foss. Arct., Vol. V, Pt. II (15eitr. /.. 



Fo.ss. Fl. Sibiriens), p. 3, pi. i, Hgs. 1, lb. 

 1882. Pteris frigida Heer: Fl. Foss. Arct., Vol. VI, Abth. II, Foss. Fl. Gronl.. Pt. I, 



pp. 3, 25, pi. ii, fig. 13; pi. vi, fig. 5b; pi. x, figs. 1-4; pi. xi, figs. 1-4, on, 



6, 7a, 8a, 9-11; pi. xiii, figs. 2, 2b; pi. xvi, figs. 1, 2; pi. xviii, fig. lUb. 

 1882. Pterifi longipennis Heer: op. cit., p. 28, pi. x, figs. 5-13; pi. xiii, fig. 1. 

 1888. Cladophlehis denticulata Font, [non (Brongn.) Natli.]:' Potomac Flora, p. 71, 



pi. iv, figs. 2, 2a; pi. vii, figs. 7, 7a. 

 1896. Cladophlehis ste'rartiana Hartz: Medd. om Gronl., Vol. XIX, p. 231, ])i. xi, 



figs. 1, 2; 1)1. xii, figs. 2, 3. 

 1896. Asplenites ^^ sp. Hartz: op. cit., p. 231, pi. xi, figs. 3, 3a. 



Fragments of what was evidently a large fern of Cladophlebis type 

 were foiuid sparingly at some of the localities. Considering the strength 

 of some of the parts preserved, and their good state of preservation, the 

 comminution of this fern is remarkable. Only sterile forms were found. 

 The largest specimens show only small Ijits of ultimate pinnse. Some 

 yield only scattered pinnules and fragments of pinnules. The pinnules 

 seem to have had a leathery, firm texture. The rachis of the ultimate 

 pinna? is strong and rigid. The pinnules are more or less falcate, some- 

 times strongly so. The>' are attached by the whole of a somewhat expanded 

 base. The larger normal pinnules are oblong linear in form, with lancet- 

 shaped suijacute tips. Those in terminal parts are shorter, sometimes 

 approaching a triangular form. The nervation is quite characteristic. 

 The midnerve is strong and persists to near the tip of the pinnule, having 



'' Professor Fontaine dcsi-rihed tliis a.s a new species, but lie notes its reseniljlance to Pecopteris ilenlica- 

 tata Heer non Brongniart from the Cretaceous of Greenland. Mr. .Seward places it in his synonymy of the 

 Yorkshire plant wliich was described under that name by Brongniart in 18:j4, and which Nathorst seems to 

 have been the first (ISTC), see synonymy) to refer to Cladophlebis. Mr. Seward, however, does not inchide 

 Heer's plant in his .synonymy, and in mentioning it on p. 141 he seems to think that it was the same as 

 Brongniart's, but lleer'.s was also called a new species. This makes an imforlunate confusion of names of 

 closely related forms, which it is dilficull to make clear. — L. F. W. 



