432 



BENNETTITALES 



[CH. 



corona (fig. 547, C, r). As already stated, the lenticular disc 

 is probably not an expanded part of the axis but the result of the 

 preservation of a spreading mop-like cluster of interseminal 



FIG. 548. Williamsonia gigas. Restoration showing an ovulate strobilus bearing 

 a terminal infundibuliform appendage. Lignier, to whom the restoration 

 is due, points out that the apical portion of the axis at dl should be represented 

 as straight and not, as in the figure, horizontally expanded, bi, bracts; 

 as, persistent interseminal scales forming the annular zone; r, receptacle; 

 cs, caducous megasporophylls and interseminal scales; dl, persistent inter- 

 seminal scales, an extension of which formed the large funnel-like appendage, 

 at; ap, apex of the receptacle. (After Lignier.) 



scales. This is the view expressed by Lignier 1 who kindly fur- 

 nished the block from which fig. 548 is reproduced. The lower 



1 Lignier (03). 



