326 CUPEESSINEAB [CH. 



impressions of BrachyjphyUum leaves. In the younger branches the 

 vascular tissue consists of separate bundles and a gap is formed on 

 the exit of the single leaf-trace: the trace divides in the outer 

 cortex into a number of fine strands ' which finally become lost in 

 a continaous band of transfusion-tissue' beneath the palisade 

 parenchymal. No details are given with regard to the pitting of 

 the tracheids or the structure of the medullary rays, but the 

 authors state that the phloem showed no indication of the presence 

 of any thick-walled fibres. In a later paper Jeffrey^ states that in 

 older stems of Brachyphyllum crassum the pits are flattened by 

 mutual contact though in younger branches this feature is often 

 not distinguishable. A single specimen is described as probably 

 a cone of Brachyphyllum^: this is, however, much smaller than 

 any cone previously recorded in connexion with Brachyphyllum 

 shoots and the anatomical data do not furnish any proof of- its 

 morphological nature. 



The species is recorded from the Magothy formation*, Chffwood, 

 and from the Raritan formation; Berry also describes a large 

 example from the Woodbine formation, Texas, as B. macrocarpum 

 var. formosum^. It is practically impossible to distinguish the 

 present species so far as external features are concerned from such 

 species as B. obesum Heer, B. crassicaule Font, and others®. 



Brachyphyllum eathiense Seward and Bancroft. 



The type-specimen of this species was originally figured by 

 Miller as an ' imbricated stem ' from Upper Jurassic rocks in the 

 North of Scotland': it consists of a branched shoot bearing in 

 places some broadly triangular imbricate leaves with longitudinal 

 ridges on the surface of the lamina. The pith includes some 

 scattered thick-walled elements: no information of importance was 

 obtained as to the structure of the vascular tissue of the stele. The 

 short fleshy leaves have a well-protected epidermis succeeded by 

 palisade-tissue and groups of hypodermal fibres while the rest of 

 the mesophyll consists of parenchyma with secretory sacs and 



1 For figures, see Hollick and Jeffrey (09) B. ' Jeffrey (10') p. 770. 



3 Hollick and Jeffrey (09) B. p. 37, H. ix. figs. 6, 6; PI. xi. fig. 3; PI. xiv. fig. 3. 



« Berry (0.5) p. 44; (06) p. 168; (11^) p. 81. 



6 Ibid. (12=) p. 392, PI. XXX. « Seward (95) A. p. 218. 



' Seward and Bancroft (13) p. 869, PI. i. figs. 2—4. 



