558 MR ROBERT KIDSTON ON 



Lepidophloios acerosus, L. and H., sp. 

 PL I. figs. 1, la ; PL II. fig. 9. 



1831. Lepidodendron, acerosum, L. and H. Fossil Flora, vol. i. pi. vii. fig. 1 ; pi. viii. 



1890. Lepidophloios acerosus, Kidston. Trans. York. Nat. Union, No. 14, p. 49. 



1891. Lepidophloios acerosus, Kidston. Proc. Boy. Phys. Soc. Edin., vol. x. p. 351. 



1854. Lepidodendron brevifolium, Ett. Steinkf. v. Radnitz, p. 53, pi. xxiv. figs. 4, 5 ; pi. xxv.; pi. xxvi. fig. 3. 



1870. Lepidodendron brevifolium, Schimper. Traite d. paleont. veget., vol. ii. p. 22. 



1845. Lomatophloyos crassicaule, Corda (in part). Flora d. Vorwelt., p. 17, pi. i. figs. 1, 2, 3, 7, 8, 9,; 



pi. ii. fig. 2 (exclude central core) ; pi. iv. figs. 1, 2, 3, 4, 5, 6 ; 



pi. v. fig. 1. 

 1855 and 1862. Lomatophloyos crassicaule, Goldenberg (in part). Flora Sarcep. foss., heft i. p. 23, 



1855; heft iii. p. 26, pi. xiv. figs. 7, 12, 13, 14, 15, 16, 17, 



1862. 



1870. Lepidophloios crassicaulis, Schimper. Traite d. paleont. veget., vol. ii. p. 50, pi. lx. figs. 13, 14. 



1871. Lepidophloios crassicaulis, Weiss. Foss. Flora d.jiingst. Stk. u. d. Rothl., p. 156. 



1891. Lepidophloios (Lomatophloios crassicaulis), Solms-Laubach. Fossil Botany, p. 212, fig. 21. 



1871. Lepidophloios carinatus, Weiss. Foss. Flora d.jiingst. Stk. u. Rothl., p. 155. 



1886. Lepidophloios carinatus, Kidston. Catal. Balceoz. Blants, p. 172. 



1869. (?) Lepidodendron dichotomum, Roehl (in part) (not Sternb.). Foss. Flora d. Steink. Form. Westph., 



p. 125, pi. xi. fig. 2. 

 1875. Lepidodendron diclwtomum, Feistm. (in part) (not Sternb.). Vers. d. bohm. Kohlenab., Abth. iii. 



p. 14, pi. iii. figs. 3 and 5. 

 1862. Lepidophloios laricinus, Goldenberg (in part). Flora Sarcep. foss., heft. iii. p. 45, pi. xv. fig. 9. 



(Named on plate Lepidophloios macrolepidotus.) 



1869. Lepidophloios laricinus, Roehl (in part). Foss. Flora d. Steink. Form. Westph., p. 150, 



pi. xxviii. fig. 9. 



1870. Lepidophloios laricinus, Schimper (in part). Traite d. paleont. veget., vol. ii. p. 51, pi. Is. 



figs. 11, 12. 

 1862. Lepidophloyos macrolepidotum, Goldenberg (in part). Flora Sarmp. foss., heft. iii. pi. xv. .fig. 9. 

 1882. Lepidophloios macrolepidotus, Renault (in part). (Jours, d. botan. foss., vol. ii. p. 45, pi. ix. fig. 4. 

 1890.(?) Lepidophloios macrolepidotum, Seward. Proc. Phil. Soc. Cambridge., vol. viL pi. iii. 



1837. Lepidostrobus pinaster, L. and H. Fossil Flora, vol. iii. pi. cxcviii. 



1838. Cycadites Cordai, Sternb. Flora d. Vorwelt., vol. ii. Lief. 7, 8, p. 196, pi. Iv. 

 1854.(?) Lepidodendron crassifolium, Ett. Steinkf. v. Radnitz, p. 55, pi. xxi. figs. 4, 5. 



Specific Characters. — Leaf-cushions directed upwards, rhomboidal, elevated, strongly 

 and prominently keeled ; keel generally terminating immediately beneath the leaf-scar in 

 a small tubercle, in which is situated a small circular or sub-triangular depression. 

 Leaf-scar situated at the summit of the cushion, rhomboidal, lateral angles acute, upper 

 and lower angles rounded ; inner cicatricules three, placed in the centre of the leaf-scar, 

 or slightly above or below the centre, punctiform, the central slightly larger than 

 the others. 



Remarks. — The only specimen I have seen, on which the direction of the leaf- 

 cushions could be determined, is that shown on PL I. fig. 1, but whether, in age, the 

 leaf-cushions become deflexed, as in Lepidophloios Scoticus, cannot at present be 

 determined. 



The types of Lepidophloios (Lepidodendron) acerosus, L. and II., cannot be 



