POROXYLEAE 



5 11 



was worked out in the most elaborate detail by the 

 French investigators, owing to whose labours this 

 genus became one of the most completely known, so 

 far as the vegetative organs are concerned, among 

 fossil plants. 



An English species, of older date than the French 



Fig, 184. — Poroxylon Sutctijfii. Transverse section of srem, showing the huge pith, the 

 ring of wood and phloem, and the cortex, with leaf-bases attached, into which the 

 leaf-traces are entering. Two axillary buds are shown ; the one to the right is 

 accompanied by the subtending leaf-base. X nearly 4. From a photograph by 

 Mr. L. A. Boodle. Scott Collection. 



forms, was found a few years back by Mr. Lomax, in a 

 roof-nodule from the Lower Coal-measures of Shore- 

 Littleborough, Lancashire ; the species has been named 

 Poroxylon Sutcliffii (Fig. 184), after the owner of the 

 mine, to whose co-operation palaeobotanists owe so 

 much ; though the plant is certainly related to the 

 French Poroxylons, its place in the same genus must 



