1 6 Watson, The Cone of BotJirodendron vnindiim. 

 DESCRIPTION OF PLATE. 



Fig. I. Photograph of a transverse section of a cone. x 13 

 approx. 

 spK =a sporophyll shewing attachment of sporangin. 

 spJi =-x sporophyll cut at the level of the top of the 

 ligule showing the characteristic shape and 

 groove for the ligule. 

 4' = the ligule of sporophyll spK' . 

 Hard bed, Halifax. 

 Q460. Cash Collection, Manchester Museum. 

 Fig. 2. Photograph of a transverse section of the wood of an 

 axis of a Bothrodendron cone. x 41, 

 px = a protoxylem. 

 .r' = arc of secondary wood. 

 Note the perfect correspondence with the wood of a branch of 

 Z. mimdiim (Will.). 



A 1 88. D. Watson collection. 

 Mountain four foot mine, South Grain, Dulesgate. 

 Fig. 3. Radial section of an isolated microsporophyll 

 [? abortive] of the Bothrodendron cone. x 45. 

 vb = vascular bundle. 

 4'-= ligule. 

 TT— Transfusion tracheids. 

 ^r= Characteristic groove, compare Fig. 4. 

 fl/= Attachment. 

 w^' = Isolated megaspore. 



From the Halifax hard bed. 

 R406. Hick Collection, Manchester Museum. 

 Fig. 4. Oblique section of a macrosporophyll of the Bothro- 

 dendron cone missing the ligule, but containing two of the 

 characteristic spores. x 45. 



vb = vascular bundle. 

 TT== transfusion tissue. 



^/'=The characteristic groove, compare Fig. 3. 

 From the Halifax hard bed. 

 Q461. Cash Collection, Manchester Museum. 



