14 Watson, TJie Co7ie of BotJirodendron iminduvi. 



taxonomic feature in recent Lycopods, this differ- 

 ence is probably an important one. 



3. There is little doubt that Spcnccriies was 

 homosporous (Scott :o6). This is an important 

 difference from BotJirodendron^ which was hetero- 

 sporous. 



These differences are so important that I think it is 

 very improbable that there is any close connection between 

 Sptncerites and BotJirodendron or indeed any other member 

 of the Lepidodendraceae. 



Summary. 



A hermaphrodite cone of small size provided with 

 very short sporophylls and a large ligule, but generally 

 conforming to the Lepidostroboid type is shown to agree 

 with BotJirodendron vinndiini (Will.) in the structure of its 

 axis, and in the small radial extension of the leaf bases 

 of its sporophylls. It is shown to occur constantly asso- 

 ciated with BotJirodendron and is regarded as attributable 

 to it. 



Some points of distinction between the sporophylls 

 of BotJirodendron nnmdiun and those of Miadesviia ineni- 

 branaeea, with which it has been confused, are pointed out. 

 The cone is compared with that of BotJirodendron minuti- 

 foliuni (Boulay) and -with Lepidostrobus. It is not regarded 

 as having any close connection with Spencerites. 



I wish to express my thanks to Professor Weiss for 

 some kind criticism, to Mr. Kidston for very kindly 

 sending for my inspection some specimens of the cone of 

 BotJirodetidron ininutifolimn (Boulay) from his own col- 

 lection, and finally to Miss K. H. Coward for making 

 some drawings for the illustrations. 



