122 JJICTYOPHYLLTJH. 



Dictyophylluni rugosum, Lindley & Hutton. 



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

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



1828. Fhlehopteris Fhillipsii, 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. Dietyophyllmn rugosum, Lindley & Hutton, Foss. Flor. vol. ii. pi. civ, 

 1836. Folypodites heracleifolius, Goppert, Foss. Farm. p. 344. 



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



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



1849. Gamptopteris Fhilhpsii, Brongniart, Tableau, p. 105. 



1860. Folypodites heraeleifolius, linger, Gen. spec. foss. plant, p. 167. 



1854. Dietyophyllmn ncgosiim, Morris, Brit. Foss. p. 7. 



1856. Dietyophyllum rugosum, Zigno, vol. i. p. 176, pi. xxHi. figs. 2 and 2«, 



D. Zeckenbyi, ibid. p. 178, pi. xxiii. figs. 1 and la. 

 1864. Dietyophyllmn rugositm, Leckenby, Quart. Joiim. Geol. Soc. vol. xx. 



p. 76. 

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

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

 1875. Fhlebopteris Fhillipsii, PMllips, Geol. Yorks. p. 202, lign. 11. 



F. Leekenbyi, ibid. p. 203. 

 1878. Dietophylluin rugosum, Natborst, Foss. Flor. Scbwedens, p. 15. 



D. Iieekeubyi, ibid. 

 1880. Clathropteris whitbyensis, Natborst, Berattelse, p. 83. 

 1888. Clathropteris whitbyensis, Scbeuk, Handbucb, p. 39. 

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



D. Leekenbyi, ibid. 



Clathropteris whitbiensis, ibid. p. 129. 

 1898. Cf. Dietophyllum bremerense, Shirley, Foss. Flor. Queensland, pi. xiii. 

 fig. 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 off alternate lateral veins, 

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

 each of the main veins smaller veins axe given ofE approximately at 

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

 meshes occupied by the fiue ramifications of the vascular bundles.. 

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



