98 GENERA OF TJNCEBTAIN' POSITION [CH. 



description of the species. The leaves are 14 — 16-5 cm. long and 

 2 — 4 mm. broad at the base ; the lamina is once forked and the 

 forks diverge at a very small angle as in D. longifolium Een. 

 Exceptionally good specimens figured by Gomes and de Lima 

 show numerous long leaves spreading radially in the matrix from 

 a comparatively slender axis. In D. longifolium the leaves are 

 given off at a much more acute angle. 



Dicranophyllum rohustum Zeiller. 



This type^ is similar to D. gallicum but the leaves are only 

 preserved in their basal portions ; the lamina is 5 — 6 mm. broad 

 and bifurcates at a distance of about 15 mm. from the base at an 

 angle of 20° — 30°. Ovoid buds occur in the axils of some of the 

 leaves. It was in association with this specimen from the Gard 

 coal-field that Zeiller found the microsporophylls already described. 

 The surface shows particularly well-preserved large and slightly 

 depressed cushions 3 — 4 cm. long and 4 — 5 mm. broad. 



Dicranophyllum Beneckianum Sterzel^. 



In the form of the leaves this Permian species from Baden 

 closely resembles D. gallicum; it is chiefiy of interest because of 

 the almost complete absence of leaf-cushion ; the leaf-scars, 

 characterised by their acute lateral angles, are almost contiguous 

 as in some species of Sigillaria. 



Dicranophyllum Richiri Renier^. 



In this Belgian Westphalian species the leaves are dichotomously 

 branched into two linear segments at an angle of about 60° ; it 

 differs from D. gallicum in the single bifurcation of the lamina, 

 the wider angle of divergence, and in the feebler relief of the 

 leaf-cushions. 



Dicranophyllum anglicum Kidston. 



This, the only British species, has recently been described from 

 the Westphalian beds of Staffordshire*. The crowded leaves, 

 3-50 cm. long, are dichotomously branched three or four times into 

 slightly spreading linear rigid segments with a maximum breadth 



1 ZeiUer (78). ^ Sterzel (07) p. 381, Pis. xiv., XV. 



3 Renier (07) p. 186, H. xvii. figs. 3—7; (10^) PI. cxvii. 

 1 Kidston (14) p. 170, PI. xiv. figs. 3, 3 a. 



