DESCRIPTIVE CATALOGUE 



it is better known. The conclusion of some authors, that all 

 the described species of Weickselia should be included in one, 

 will probably need revision with the discovery of better pre- 

 served material. 



X45 



Text-fig \. Weicli*rlin rttimJata (Stokes & Webb), Ward. Carbonised 

 impression from the Lower Greensand showing the reticulate veins 

 and mid-rib. X 4'ii. No. fiL'.MT. 



52547. Text-fig. 1. The specimen consists of a number of more 

 or less macerated and carbonised fragments of the 

 pinnules and rachises of \Ve.ichsdiu reticulata and 

 other debris of plants in a coarse sandstone matrix in 

 which there are broken fragments of Pecten and other 

 organisms. Three of the pinnules, though carbonised, 

 show unusually clearly the fine network of the secon- 

 dary veins, which are rarely seen even in much better 

 preserved specimens (see p. 3 ante and Gothan, 1910, 

 p. 2, "die Maschenadern sind aber nur selten sichtbar, 

 bei deutschen Exempliireu fast nie"). These are figured 

 in text-fig. 1 and serve to identify the plant reliably. 

 Isle of Wight [probably Ventnor], Morris Coll. 



40938. Small fragment ; pinnules on one side of secondary 

 rachis. The specimen had been collected for a supposed 

 " Flabellaria "-leaf, which is in reality a broken shell 

 of Pecten. Yentnor, I. of Wight. Purchased, 1860. 



V. 13077. Isolated, entirely blackened and carbonised fragments 

 showing several separated pinnules in a coarse matrix. 



