XV] LKPIDODENDRON 171 



suggest the possibility of the specific identity of X. Wunschianum 

 and L. HarcourtiP. 



In 1871 Binney' described a specimen of a heterosporous cone, 

 Lepidostrohus Wiinschianus, from Arran exhibiting the ordinary 

 features of lepidodendroid strobili ; this was probably borne by 

 Lepidodendron Wunschianum. 



7. Lepidodendron macrophyllum (Williamson). Fig. 186, C. 



The diagrammatic sketch reproduced in fig. 186, C, was 

 made from the transverse section of a small twig, slightly 

 less than 2 cm. in its longest diameter, originally figured by 

 Williamson^ in 1872. Earlier in the same year Carruthers* pub- 

 lished a short account of the same form based on specimens 

 collected by Mr Buttervvorth from the Coal-Measures of 

 Lancashire near Oldham, but both authors refrained from insti- 

 tuting a new specific name. In a later publication Williamson 

 spoke of the type as Lepidodendron macrophyllum ^ William- 

 son's species has nothing to do with Lycopodites macrophyllus of 

 Goldenberg^- The most striking feature of this rare form is 

 the large size of the leaf-cushions, which are of the Lepidophloios 

 type, in proportion to the diameter of the shoot. The stele 

 consists of a ring of xylem, all of which is primary in the sections 

 so far described, enclosing a parenchymatous pith : a Stigraarian 

 rootlet is shown at s. 



8. Lepidodendron Veltheimianum Sternb. (General account). 



Figs. 157, 185, 186, A, B. 



1820. " Schuppeiipflanze," Ehode, Beit, zur Pflanzenkunde der Vor- 

 welt, PI. III. fig. 1. 



1825. Lepidodendron Veltheimianum, Sternberg, Flora der Vorwelt, 

 PI. Lii. fig. 5. 



1836. Pachyphloeus tetragonus, Goeppert, Diefossilen Farnkrauter, 

 PI. XLITI. fig. 5. 



1852. Sagenaria Veltheimiana, Goeppert, Foss. Flora des Ubergangs- 

 gebirges, Pis. xvii — xxiv. 



1 Seward and Hill (00) p. 922. ^ Binney (71) p. 56, PI. xi. figs. 2a— 2c. 



3 Williamson (72) p. 298, pi. xlv. fig. 35. * Carruthers (72). 



« Williamson (93) p. 30. « Goldenberg (55) p. 12. 



