98 GENERA OF UNCERTAIN 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 Ren. 

 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 robustum Zeiller. 



This type 1 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 2 . 



In the form of the leaves this Permian species from Baden 

 closely resembles D. gallicum', it is chiefly 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 3 . 



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 4 . 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 Zeiller (78). 2 Sterzel (07) p. 381, Pis. xiv., xv. 



3 Renier (07) p. 186, PL xvii. figs. 37; (10 2 ) PL cxvu. 



4 Kidston (14) p. 170.. PL xiv. figs. 3, 3 a. 



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