FILICES. 



lum adnascens, Lindl. and Hutt. (Fig. 12, i) 1 . (2) Pecopteris dentata, Gein. 

 not Brongn., with Rhacophyllum filiciforme, Gutb. 2 (3) Odontopteris 

 Reichiana, Gutb., with Cyclopteris trichomanoides, Brongn. 3 (4) Oligo- 

 carpia quercifolia, Gopp. 4 (5) Neuropteris Loshii, with Cyclopteris tricho- 

 manoides 5 . (6) Pecopteris Radnicensis, Strbg, with Aphlebia tenuiloba 6 . 



(7) Neuropteris rarinervis, Bunb. 7 



(8) Sphenopteris (Oligocarpia) for- 

 mosa, Gutb. 8 (9) Sphenopteris (Di- 

 plotmema) acutiloba, Strbg. 9 (10) 

 Sphenopteris coralloides, Gutb. 10 

 (u) Lesleya grandis, Lesq. 11 (12) 

 Pecopteris dentata,with Rhacophyl- 

 lum laciniatum 12 . 



There are a few fossil fern- 

 leaves which can find no place in 

 Brongniart's system because, owing 

 either to the bad state of preserva- 

 tion or to the stout leathery con- 

 sistence of the lamina of the leaf, 

 the nervation is not distinctly 

 shown in any of the remains 

 hitherto observed. Such forms 

 can of course only be given in an 

 appendix ; and this is the case -also 

 with another series of forms, which 

 do not certainly belong to the 

 Ferns but may most of them be 



FlC. 12. Aphlebiae of fern-leaves from the Carboniferous 

 formation, i, portion of the leaf of Sphenopteris crenata, 

 Ldl., less than the natural size ; the finely divided Aphlebiae 



quite as well classed with Cyca- 

 deae, as has been already remarked 



are attached to the base of the primary segments, a, one of (sCC D. 8?). In fact OHC of these 



these Aphlebiae of the natural size. 3, a single Aphlebia ' m .... . 



(Fucoides filiciformis, Gutb.) from the coal of Zwickau. genera. I hmnfcldia, JLtt. IS par- 

 After Schimper in Zittel's Text-book. 



ticularly compared by its author 



with Phyllocladus. We shall have to return once more to these doubtful 

 forms in a future page. 



It is impossible for me to treat at length of the countless fern-leaves 

 which have been preserved in the fossil state, for I have occupied myself 



1 Lindley and Hutlon (1), vol. ii, tt. 100, 101 ; Schimper (1), t. 48, ff. i, a ; Zittel (1), p. 143; 

 O. Feistmantel (3), t. 66. 2 Geinitz (5), t. 35, ff. 11-14; Schimper (1), t. 48, ff. 3-5. 3 Geinitz 

 (5), t. 26, f. 7 ; Grand' Eury (i), t 12, p. 113 ; Zittel (i), p. 122. * Stur (5), t. 15, f. 12. 



8 Roehl (1), t. 17 ; Geinitz (4), Heft 2, t. 4, ff. 2, 3. Stemberg, Graf von (1), t. 58, ff. i, 2. 



7 Lesquereux (3), t. 8, f. 5. " Zeiller (7), t. 10, f. 12. Zeiller (7), t. u, f. 5. 10 Zeiller 



(7), t. 12, ff. i and 8. " Lesquerenx (1), vols. i. and ii, t. 15, f. 3. ia Fontaine and White 



(1), t. 35, f. 2. " von Ettingshausen (2X 



