136 CLADOPHLEBIS. 



1892. Asplenium ivhitbiense, ibid. p. 129. 



? Gladophlebis falcata, Dawson, Trans. Roy. Soc. Canada, p. 84. 

 1894. Cladophlebis denticulata, Raciborski, Flor. Krakow, p. 224, pi. xxii. 



figs. 3 and 4. 



C. cf. nebbensis, ibid. p. 227, pi. xxii. figs. 5 and 6. 

 C. insignis, ibid. p. 223, pi. xxii. figs. 9 and 10. 



1896. Cf. Cladophlebis Roesserti Groenlandica, Hartz, Med. Gron. pis. vii.-x. 

 C. Stewartiana, ibid. pi. xi. figs. 1 and 2. 

 Asplenites, sp., ibid. pi. xi. fig. 3. 



1900. Cladophlebis denticulata, Seward, Manchester Lit. and Phil. Soc. 

 vol. xliv. p. 18, pi. iv. fig. 9. 



Type - specimens. Brongniart's type - specimens in the Paris 

 Museum. A specimen, which is the counterpart of the type- 

 specimen of Pecopteris insignis of Lindley & Hutton, is in the 

 Leckenhy Collection, Cambridge (No. 342). 



Frond bipinnate, large, with long spreading pinnae attached to 

 a comparatively slender rachis. Pinnules falcate, acutely pointed, 

 usually finely dentate, attached by the whole of the base; the 

 longest pinnules may reach a length of 3-4 cm. Yenation of 

 the typical Cladophlebis type ; a well-marked midrib giving off 

 secondary dichotomously forked veins at an acute angle. Towards 

 the apex of the frond the pinnules are shorter and broader than 

 the longer and narrower segments in the lower or middle portion 

 of the frond. 



Fertile fronds similar in form to the sterile ; the segments of the 

 same shape, but somewhat straighter, and with an irregularly 

 serrate margin, the sori are oblong in shape and parallel to the 

 secondary veins. 



The specimens on which Brongniart founded his species Cladophlelis 

 denticulata are fairly large examples of well-preserved fronds with 

 falcate pinnules having an obviously dentate margin; they are 

 of the same form as those represented in PI. XIY. Figs. 3 and 4 

 of this Catalogue. Brongniart regards Pecopteris ligata of Phillips 

 and Neuropteris ligata, as figured by Lindley & Hutton, as identical 

 with his P. denticulata. The type-specimens of P. denticulata were 

 sent to Paris by Williamson and Bean from the neighbourhood of 

 Scarborough (no doubt Gristhorpe Bay). 



The frond represented in the Fossil Flora of Lindley & Hutton 



as Neuropteris ligata has falcate dentate pinnules like those in 



Brongniart's specimen, and as shown in PI. XIV. Fig. 3. Nathorst, 



who has examined the type - specimen of Pecopteris ligata of 



