320 CTJPEESSINEAE [CH. 



each cone-scale has a funnel-like cavity near one edge and the 

 upper side of the cavity is radially ridged^. No seeds have been 

 found in connexion with the cones. The male flowers are longer 

 and narrower and consist of numerous sporophylls attached at 

 right-angles and expanded distally into a peltate lamina. The 

 specimen reproduced in fig. 756 is the original of Feistmantel's 

 Pachyphyllwn heterophyllum^ from Indian Jurassic beds: on the 

 stouter axis there are spirally disposed triangular leaf-bases while 

 on the smaller branches the leaf-lamina is preserved and appears 

 to be thick, sub-falcate, and tetragonal. This specimen is in my 

 opinion indistinguishable from that shown in fig. 755, which 

 Feistmantel figures as Echinostrobus expansus^ and both agree 

 superficially at least with European examples of Brachyphyllum 

 expansum. 



Brachyphyllum mamillare Brongniart. 



This specific name* has been appHed to specimens from many 

 Jurassic localities and it might well be extended to others regarded 

 by authors as distinct species. An accurate specific determination 

 of the numerous Brachyphyllum shoots is indeed hopeless without 

 other characters than those afforded by impressions and casts. In 

 habit the species resembles Athrotaxis cupressoides : the branches 

 are given off at a fairly wide angle; the leaves are small, fleshy, 

 and more or less triangular with a median dorsal keel and usually 

 spirally disposed. There has been some confusion between this 

 species and Sternberg's Thuites expansus: the specimen from the 

 Yorkshire coast figured by Lindley and Hutton^ under the latter 

 name, now in the Manchester Museum, is undoubtedly identical 

 with Brongniart's species. There is a considerable difference in the 

 degree of freedom of the upper part of the lamina from the axis; 

 in some specimens the leaf is almost entirely concrescent with the 

 axis and in others the leaves are more open and attached only by 

 the basal part of the lamina. 



Feistmantel figures several specimens of Brachyphyllum from 

 Indian Jurassic localities under different names, many of which 

 appear to be indistinguishable superficially from B. mamillare. 



1 Seward (04) B, PI. ix. fig. 4. 



2 Feistmantel (79) PI. xi. fig. 4. » Ibid. PI. xi. fig. 2. 



< Brongniart (28) A. p. 109. ^ Lindley and Button (35) A. PI. OLXvn. 



