54 COXTKIBUTIONS TO GENERAL GEOLOCJV, lOKi. 



PaGIOPIIYI.LUM .STEENSTIUPI Billt llolilW 



Pagiophyllum steenslrupi Barlholin, Noglc i dpn Imrnlioliiiskc .luraloriiirtlion lorckummciulo Planteforstoninger, p. 10), 

 PI. V. figs. fi-S; PI. VI, figs. 1, 2. 4. 1894; Mollcr, Bornliolms fdssila Flora. Ciymii.is|)crmer: Kongl. Sveuska Veten- 

 skaps-Akad. Ilaiull.. voL 36. p. 33. PI. VI. fig-s. 1-3. 1903. 



The Cn\)o Ijisburnc material contains two minute fragments tliat appear to be the same 

 as the tips of bramhlets such as are showTi in Plate VI, figure 3, of Moller's paper, cited above, 

 but they are so small and uncertain as to make their identification more or less questionable. 



These s])cciraens also suggest Stacht/otaxus sej>fenfrionalis (Ag.) Xathorst, as figured b}^ 

 MoUer,' but there is not enough preserved to identify them certainly with that species. 



PiTYOPiiYi.urM xouDEXSKiOLDi (Heer) Seward. 



Pitijophi/llum nordenskioliH (,Heer) Seward. .lura.siiic )ilanl.-i t'rum Amurland: ('dm. gi'ml. Mom., now ser.. pt. 81. p. 30, 



" PI. II. fig. 17; PI. HI. fig. 22, 1911'. 

 Pinm nordcnsl-ioMi Ileer, Flora fossilis arclita, vol. 4, pt. 1, p. 4b. PI. IX, figs. 1-6, 1S76; idem, pT. 2, pp. 76, 117. 

 PI. IV. fig. 8c; PI. XX. fig. 4. a. b; PI. XXVII. fig. 9a; PI. XXVIII. fig. 4. 1876. 



This form is represented in the present material by several small fragments whicli are about 

 3 millimeters ui width and 2 or 3 centimeters in length, evidently from the middle portion of the 

 leaves. They have a smgle very strong median rib antl show distincth' the peculiar transverse 

 ^Tinkling so well known in leaves of this tvpe. One fragment appeare to show the presence 

 of the longituduial groove in the middle of the lamina that is regardeil by Nathorst as so char- 

 acteristic of this species, though the others m close proximity to it ilo not. It is probable, 

 as Nathorst has suggested, that the transverse wrinkling is in the. main a ])henomenon of desicca- 

 tion, though it was doubtless more or less connected with some structural peculiarity. 



As Seward - has very well said, it Ls extremely difficult, if not impos3il)le. satisfactorily to 

 distmgulsh between many of the Rha^tic and Jurassic leaves that have been described from time 

 to time under the name Pityophyllum. Thus I can see no marked distinction between what is 

 here called P. nordcnsl-idhll and. P. staratschini (Heer) Nathorst,^ from Advent Bay, Spitz- 

 bergen. It also agrees closely witli Tazites cf. gramineus (Heer) as figured by Xathorst * from 

 Franz Josef T.,and. Seward '' has suggested that the leaves from the Jiu'assic of Oregon referred 

 bj- Fontaine" to Nihonia- parvuh. {Txniopienfi parvuJa Heer) are to be regarded as belonguig 

 to Pityophyllum, but this can hardly be so, for they arc mucli larger than any usuallj^ referred to 

 Pityophvlhun, and moreover they have a lateral nervation exactly as figured by Heer uniler 

 Tsen uipterits parvula. 



FlELDEM.V XOHDEXSKIOLDI Xat.llorst. 



Plalo Vll, figiire2. 



Fieldenia nordenakioldi Nathorst. Zur mesozoischen I'lora S])ilzl)tM-gens: Kongl. Sveuska Vetenskaps-.\kad. Haiidl.. 

 vol. 30, p. .56. PI. HI. figs. 16-27, 1897. 



In the material from Cape Lisbiune i find several more or less well preserved leaves that 

 I am unable to distinguish from Xathorst's species, which comes fnini the ri)per Jiu-assic of 

 Advent Bav, Spitzbergen. Tiie example, figin-ed is nearly perfect, except that the nervatitm 

 is rather bidistinct, though careful scrutiny discloses the presence of about eight thin, parallel 

 nerves. The point of the leaf is obtuse and mundiil. the basal portion is narrowed to the point 

 of attachment, and on the whole this leaf is absolutely indistinguishable from that sliown in 

 figure 17 of Xathorst's Plate HI. 



As Xathorst ha.s pointed out, it is diflicult, if not impossible, to distinguish between the 

 present species and what Heer' has called Podozamites ensiformis and /'. cuspiformi^ from 

 the Irkutsk, eastern Siberia. 



' Op. tit., PI. V, flg. 7. 



I Seward, A. C, Jurassic plants from .Amurland: Com. Rfel. Mfm., new scr., pt. M, p. 30, 1912. 



' Nathorst, A. O., Zur mesojoisilicn Flora Spitzbcrgens: KohrI. Svonska \e|pnskaps-.\ka<l. Handl., vol. .30, p. 68, PI. V, f\gs. 32-36, 1S9". 



' Natl.orst, A. O., Fossil plant.i from Franz Josef Land: Norwegian North Polar Exped., vol. 1, No. 3, I'l. H, figs. 20-23, 1900. 



' .<ewi.rd, A. C, op. cit., p. 20. 



• Fonlainc, W. M., I'. S. Ocol. Survey Mon. -IS, PI. XVU, flgs. 1-7, 1905. 



' Ilccr, Oswald, Flora fossilis arctica, vol. ■), pt. 2, PI. IV, figs. 8-10, 11, 12, 187H. 



