XVIIl] BOTHRODENDRON 255 



At the suggestion of Dr Kidston, Prof. Zeiller^ figured an 

 English specimen of this species, presented to the Paris 

 Museum by Mr Hutton, in which the leaf-scars are preserved 

 on the bark of a stem with Ulodendron scars. The surface of 

 the bark is characterised by numerous small pits and discon- 

 tinuous vertical lines in contrast to the transverse lines of 

 B. minutifolium (c£ fig. 212, A and F). The leaf-scars on the 

 smaller shoots may have a diameter of only 0'3 — 0"5 mm., while 

 on the larger branches they reach a breadth of 1 mm. The 

 ligule-pit may be in contact with the upper edge (fig. 212, F) 

 of the leaf-scar or separated from it by a short distance. 



c. Bothrodendron kiltorkense (Haughton). Fig. 212, G, H. 



1859. Cycloitigma kiltorkense, Haughton, Journ. R. Soc. Dublin, 

 Vol. II. p. 418, Pis. xiv.-xvii. 



C. minutum, Haughton, Journ. R. Soc. Dublin, Vol. ii. p. 418, 

 Pis. xiv.-xvii. 



C. Griffithsi, Haughton, Journ. R. Soc. Dublin, Vol. ii. p. 418, 

 Pis. XIV.-XVII. 

 1870. Lepidodendron Veltheimianum, Heer {ex parte), K. Svensk. 

 Vet. Akad. Handl. Vol. ix. PI. ix. figs. 2-4. 

 Cyclostigma kiltorkense, ibid. PI. xi. figs. 1-5. 

 Calamites radiatus {ex parte), ibid. PI. iii. fig. 2 a : PI. ix. 

 fig. 2b. 



Stigmaria jicoides minuta, ibid. PI. ix. fig. 2 c. 

 Knorria imbricata, ibid. PI. x. fig. 4. 

 1889. Bothrodendron kiltorkense, Kidston, Ann. Mag. Nat. Hist. 



[vi.], Vol. IV. p. 66. 

 1894. .Bothrodendron kiltorkense, Nathorst, K. Svensk, Vet. Akad. 



Handl. Vol. xxvi. No. 4, p. 65, Pis. xiv. xv. 

 1902. Bothrodendron {Cyclostigma) kiltorkense, ibid. Vol. xxxvi. 

 No. 3, p. 31, Pis. X.— XIV. 



The specimens from the Upper Devonian rocks of Co. 

 Kilkenny on which Haughton founded this and two other 

 species may be regarded as representing one specific type. He 

 described the circular leaf-scars as arranged in alternating 

 whorls. In habit the Irish species agrees with Bothrodendron 

 minutifolium, but the leaf-scars are more elliptical (fig. 212, H) 



1 Zeiller (86) PI. ix. figs 1—3. 



