of Ulodendron to Lepidodendron, cfcc. 129 



dendron ; it possessed similar leaves and rhomboidal areolse 

 on the stem and branches. A specimen in Alnwick Castle 

 shows that its mode of branching is dichotomous, like the 

 Lepidodendron ; but, in addition, there are rows of round or 

 oval scars on opposite sides of the stem arranged vertically ; 

 and these scars continue upward on the same plane along the 

 branches, while other rows commencing at the point of forking 

 run up on the opposite side of the branches ; the scars and 

 the branches are all in the same plane. These scars appear 

 to liave been points of attachment of masses of inflorescence, 

 which had consisted of sessile cones formed of imbricated 

 scales in a manner similar to a fir-cone. The chief difference 

 between Lepidodendron and Ulodendron would therefore be 

 that the cones, bearing sporules or seeds, were placed at the 

 end of branches on the former, but their position on the 

 latter was in linear rows on the stem and branches." 



The only species Tate mentions is Ulodendron oi-natissi- 

 mum, Sternberg, sp. Of this he says : " The fruit-scars of 

 this species are large and beautifully sculptured; we have 

 them 11 inches in circumference ; the distance from each 

 other varies — in some specimens they are in contact, in 

 others 1 inch apart ; the areolae also vary in form j when 

 well preserved they are rhomboidal, contiguous, and spirally 

 arranged. Buckland's U. Allani, and Brongniart's L. orna- 

 tt'ssimum are representations of different portions of the same 

 species." 



1854. Geinitz. Darstellung der Flora des Hainichen- 

 Ebersdorfer und des Flohaer Kohlenbassins. — Underthename 

 oi Sagenaria Veltheimiana^ Geinitz figures- some fine exam- 

 ples of Lepidodendron Veltheimianum, showing the Uloden- 

 droid condition (pis. iv., v.). 



1855. Geinitz. Die Versteinerungen der Steinkohlen-For- 

 mation inSachsen, p. 34. — Ulodendron is again placed in Lepi- 

 dodendron by Geinitz. He says : " The branch-scars stand 

 quincuncially and sometimes in only two rows ;" and, again, 

 '' The occurrence of these large branch-scars has given rise to 

 the formation of the genus Ulodendron.''^ 



1855. Goldenberg. Flora Sarajpontana fossilis. Die 

 Pflanzenversteinerungen des Steinkohlengebirges v^on Saar- 

 briicken, p. 18. Genus Ulodendron. — This author regarded 

 the large IJlodendroid scars as marking the place from which 

 cone-like branches had fallen, these cone-like branches being 

 formed through the arrested development of ordinary lateral 

 branches. 



1857. Miller. Testimony of the Rocks, pp. 462 & 464. — 

 On p. 462 Hugh Miller says : *' The only terminal point of 



