78 LYCOPODIALES [CH. 



as Lycopodites Vanuxemi^, identifying them with Goeppert's 

 Sigillaria Vanuocemi^ founded on German material. In a later 

 paper Kidston transferred the British specimens of vegetative 

 shoots to a new genus Archaeosigillaria^. 



Lycopodites Stoclcii Kidston*- 



The plant so named was discovered in Lower Carboniferous 

 strata of Eskdale, Dumfries, Scotland; it is represented by 

 imperfectly preserved shoots bearing a terminal strobilus and 

 was originally described by Kidston as apparently possessing two 

 kinds of foliage leaves borne in whorls. The larger leaves have 

 an ovate cordate lamina with an acuminate apex, while the 

 smaller leaves, which are less distinct, are transversely 

 elongated, and simulate sporangia in appearance. Dr Kidston's 

 figure of this species has recently been reproduced by 

 Professor Bower ^ who speaks of the supposed smaller leaves as 

 sporangia, a view with which the author of the species agrees. 

 It would appear that this identification is, however, based 

 solely on external resemblance and has not been confirmed by 

 the discovery of any spores. Assuming the sporangial nature 

 of these structures, this Palaeozoic type represents, as Bower 

 points out, a condition similar to that in some recent species of 

 Lycopodium in which sporangia are not confined to a terminal 

 strobilus but occur also in association with ordinary foliage 

 leaves. The strobilus consists of crowded sporophylls which are 

 too imperfect to afford any definite evidence as to their 

 homosporous or heterosporous nature. As Solms-Laubach^ 

 points out, this type recalls Lycopodium Phlegmaria: among 

 recent species. 



Lycopodites Reidii Penhallow. 



Professor Penhallow' instituted this name for a specimen 

 measuring 8 cm. long by 6 mm. in breadth, collected by Mr 



1 Kidston (86'). a Qoeppert (52) A. 



3 Kidston (01) p. 38. * Kidston (84) PI. v ; (01) p. 37. 



" Bower (08) p. 298, fig. 147. « Solms-Laubaoh (91) A. p. 186. 



' Penhallow (92) PI. i. fig. 2, p. 8. 



