EOCENE EERNS. 



39 



Some difference is apparent between the angles of tlie venation of the young 

 pinnae attached to the plant and those drawn on PL X, figs. 9, 10, which are more 

 acute. 



The original specimen, which should be preserved in thfi Jermyn Street Museum, is 

 not now to be found there ; and our identification rests, therefore, partly with Heer, who 

 states that they are the same. 



It would be better, perhaps, that the species should be described under the name of 

 GoNioPTERis than under that of Phegoptekis, as at page 38. 



GoNIOPTERIS STIRIACA {Uiif/er). 



J PoLYPODiTES STiRiACUS, linger. Chloris Protogsea, p. 121, pi. xxxvi. 1847. 



LastRjEA STIRIACA, Heer. Flor. Tert. Helv., vol. i, p. 31, pi. vi and vii ; vol. iii, 



p. 151. pi. cxliii. 18.59. 



— HELVETICA, Heer. Ibid., p. 33, pi. vi, fig. 2; vol. iii, p. 151, pi. cxliii, figs. 



2—5. 1859. 



GoNiOPTERis STIRIACA, A. Braun. Zeitschrift Geolog. Gesellsch., vol. iv, p. 55G. 1852. 



— — Schimper. Pal. Vegetale, vol. i, p. 547. 18G9. 



Lastr^a STIRIACA, Heer. Flora of Bovey, p. 28, pi. v, figs. 12 — 15. 1861. 



— — Gaudinet Strozzi. Coiitributious a la Flore Foss. Italieniie, vol. ii, 



p. 32, pi. i, fig. 2. 1859. 

 PHEGorTERis STIRIACA, Ettvigsh. Flora of Bilin, p. 16, pi. ii, f. 16 — 18. 1866. 



G. fronde pinnata, pinnis linear ihus, prcelongis, inferioribus grosse crenatis serratisve, 

 superioribus argute serraiis vel serrulatis ; nervatione Goniopteridis Aspidii, nervu primario 

 valido promi?iente, recto, nervis secundariis sub angulis 50 — 65° orientibus, tenuibus, sub- 

 rectis vel paullo arcuatis, nervis tertiariis in pvmis inferioribus pier im que 6 — 7, in piinnis 

 superioribus plerumque 4 — 5, curvatis, subparallelis, angulo acuto egredientibus. Soris 

 rotundatis biseriatis. 



Middle Bagshot, Bovey Tracey, 



This Eern has not, we believe, been met with in England elsewhere than at Bovey 

 Tracey, where it was formerly found in abundance. The pinnae are usually attached to 

 the rachis, and the sori are frequently preserved. The stems and circinate vernation 

 placed with Pecopteris lignitum by Heer ^ belong, in all probability, to this species.^ 



We have no hesitation in uniting Lastrcea helvetica, Heer, with the present species. 



The former was first founded upon most imperfect fragments, and separated upon the 



supposition that it was more closely and sharply serrated, and possessed fewer ternary 



veins. The much more perfect specimen figured in the third volume of the ' Elor. Tert. 



1 'Flora ot Bovey,' p. 31. 

 See description of Osmunda lignitum, p. 50. 



7 



