122 J)ICT YOPH YLLTTM. 



Dictyophyllum rugosum, Lindley & Hutton. 



[Foss. Flor. vol. ii. pi. civ. 1833.] 

 (PL XIII. Pig. 3; PL XVIII. Pig. 1 ; Text-figs. 17-19.) 



1828. . Phlebopteris Phillipsii, Brongniart, Hist. veg. foss. p. 377, pi. cxxxii.. 



fig. 3 ; pi. cxxxiii. fig. 1. 



1829. Phyllites nervulosis, Phillips, Geol. Yorks. p. 148, pi. viii. fig. 9. 

 1834. Dictyophyllum rugosum, Lindley & Hutton, Foss. Flor. vol. ii. pi. civ. 

 1836. Polypoditcs hcracleifolius, Goppert, Foss. Farm. p. 344. 



1838. Dictyophyllum rugosum, Sternberg, Flor. Vorwelt, vii. p. 133. 



1848. Dictyophyllum rugosum, Bronn, Ind. Pal. p. 423. 



1849. Camptopteris Philhpsii, Brongniart, Tableau, p. 105. 



1850. Polypodites hcracleifolius, linger, Gen. spec. foss. plant, p. 167. 

 1854. Dictyophyllum rugosum, Morris, Brit. Foss. p. 7. 



1856. Dictyophyllum rugosum, Zigno, vol. i. p. 176, pi. xxiii. figs. 2 and 2.. 



D. Leckenbyi, ibid. p. 178, pi. xxiii. figs. 1 and 1. 

 1864. Dictyophyllum rugosum, Leckenby, Quart. Journ. Geol. Soc. vol. xx_ 



p. 76. 



1867. Dictyophyllum rugosum, Schenk, Foss. Flor. Grenz. p. 144. 

 1869. Dictyophyllum rugosum, Schimper, Trait, pal. veg. vol. i. p. 634. 

 1875. Phlebopteris Phillipsii, Phillips, Geol. Yorks. p. 202, lign. 11. 



P. Leckenbyi, ibid. p. 203. 

 1878. Dictophylliun rugosum, Nathorst, Foss. Flor. Schwedens, p. 15. 



D, Leckenbyi, ibid. 



1880. Glathropteris whitbyensis, Nathorst, Berattelse, p. 83. 

 1888. Clathropteris whitbyensis, Schenk, Handbuch, p. 39. 

 1892. Dictyophyllum rugosum, Fox-Strangways, Tab. Foss. p. 130. 



D. Leckenbyi, ibid. 



Clathropteris whitbiensis, ibid. p. 129. 



1898. Cf. Dictophyllum bremerensc, Shirley, Foss. Flor. Queensland, pi. xiiL 

 % 2. 



Frond large, palmate pedate, deeply dissected into broadly linear 

 pinnatifid lobes with linear acuminate ultimate segments. Each 

 lobe is traversed by a short midrib giving on alternate lateral veins, 

 each of which forms the main vein of an ultimate segment ; from 

 each of the main veins smaller veins are given off approximately at 

 right angles, and these anastomose and form a system of irregular 

 meshes occupied by the fine ramifications of the vascular bundles. 

 [No good examples of sori have been met with in specimens of 



