128 Mr. R. Kidston on the Relationshi'p 



different circumstances from those preserved in the shales over 

 the coal. They present the appearance of a large unbranched 

 zigzag trunk, with two rows (opposite one another) of alter- 

 nating cup-shaped deep depressions, one at every projecting 

 angle of the trunk. Mr. Dawes showed me a specimen pre- 

 served in sandstone, with a large organ, which he considers a 

 cone, inserted into one of the cup-shaped depressions. I 

 could not, however, form any conclusion concerning the real 

 nature of this highly interesting example." 



1848. Sauveur. " Vegetaux fossiles des terrains houillers de 

 la Belgique," Academic royale d. sciences, d. lettres et d. 

 beaux-arts de Belgique. — On pi. Ixvi., under the name of 

 Arthrocladion Rhodu,is figured a large decorticated specimen of 

 Ulodendron, representing that condition of the plant for wdiich 

 Lindley and Button proposed their genus Bothrodendron. 



1849. Brongniart. Tableau des genres de vegetaux fossiles, 

 p. 42. — Brongniart here states his belief that Ulodendron 

 may be only founded on a peculiar condition of Lepidodendron^ 

 but which, from the occurrence of the large circular scars, 

 may perhaps deserve to be generically distinguished. 



1850. Unger. Genera et species plantarum fossilium, 

 p. 262. — Ulodendron \& here regarded as forming a true genus, 

 with which, however, is united Bothrodendron, L. & H. 



1852. Goppert. "Fossile Flora des Uebergangsgebirges," 

 Verhandl. der Kaiserl. Leop. Carol. Akad. d. Natur. vol. xxii. 

 suppl. — In this work Goppert mentions four species of Mega- 

 jjhytum. One of these at least, his Megaphytum dubium, 

 belongs to the so-called genus Ulodendron. Goppert himself 

 expressed doubt as to the propriety of keeping this separate 

 from Lepidodendron Veltheimianum ; and on p. 191 he says : 

 " I confess I am still in doubt concerning the existence of this 

 species, it many times having appeared to me as belonging to 

 SagenariaVeltheim-iana.^' The specimen to which his remarks 

 apply (pi. xxvii.) cannot be placed in Megaphytumj and 

 clearly belongs to Ulodendron, L. & H. The general cha- 

 racter of Megaj)hytum dubium shows a great similarity (espe- 

 cially in regard to the arrangement and form of the large 

 scars) to Ulodendron Taylori, Carr. ; but from the fossil 

 being decorticated, its specific identity cannot be satisfactorily 

 determined. 



1853. Tate. In the ' Natural History of the Eastern Bor- 

 ders,' by G. Johnston. (London.) — This author says on p. 302 : 

 " The Ulodendron was the most singular plant which flourished 

 during the Carboniferous era. Specimens obtained from Aln- 

 wick Moor enable us to add something to the knowledge of 

 its form. Its internal structure is the same as that of Lepido- 



