142 PHYILOPTEEIS 



V. 2353. Small piece with carbonaceous substance preserved; 

 shows an unevenly-lobed margin. In the venation areolae occur 

 oval or roundish projections, probably sori. Gf. Schenk's figure of 

 Hausmannia dichotoma, Dunk., also Nathorst's enlarged drawing 

 of Bictyophyllum Nihsoni, Brong., var. intermedium} Eccles- 

 bourne. Rufford Coll. 



V. 2815. On one of these specimens is a broad vein from which 

 secondary branches are given o£E at right angles, and the spaces 

 between are traversed by a network of finer veins. Length of 

 fragment 3'5 cm. ; intervals between the large secondary branches 

 2 mm. Cf. Sausmannia dichotoma,^ Dunker, and Schenk's figure 

 of Bictyophyllum Roemeri^ Schenk. Ecclesbourne. Rufford Coll. 



Genus PHYLLOPTERIS, Brongniart. 



[Tableau, 1849, p. 22.] 



Brongniart proposed this new genus for certain forms of leaves 

 previously referred to Glossopteris and Ttsniopteris, but which differ 

 from these two genera in the character of their venation. The 

 leaflets included in this genus are considered by Brongniart to 

 belong to pinnate or digitate fronds, more or less lanceolate or 

 linear in shape, with well-marked midrib, and very oblique 

 dichotomously branched veins which do not anastomose to form 

 a reticulum. Glossopteris Phillipsii, Brong., is one of the plants 

 included under Phyllopteris ; it is pointed out that Phillips' figure ' 

 incorrectly represents the venation as reticulate, also that the 

 plant described and figured by Lindley and Hutton as Glossopteris 

 Phillipsii^ is a true Sagenopteris. 



Zigno" and Saporta' adopt Brongniart's genus, and the latter 



' Foss. Fl. Schwedens, pi. iv. fig. 8. 



' Wealdenbildung, pi. v. fig. 1. 



' Palaeoutographica, vol. lix. pi. xxxi. fig. 3. 



* Geol. Torks. 1875, pi. yiii. fig. 8. 



' Foss. Flor. vol. i. pi. Ixiii. 



« Flor. foss. OoKt. vol. i. p. 166. 



' Pal. rran9. vol. i. p. 448. 



