556 MR ROBERT KIDSTON ON 



1826. Lepidofloyos laricinum, Sterub. Ess. flore monde prim., vol. i. fasc. 4, p. xiii. 



1855 and 1862. Lepidophloios laricinum, Goldenberg (in part). Flora Sarcep. foss., Lief. i. p. 22, pi. Hi. 



figs. 14, 14a (1855) ; Lief. iii. p. 30 (pi. xv. fig. 11 ?), pi. xvi. figs. 



(1 1) 2, 3, 4, 5, 6 (1862). 



1870. Lepidophloios laricinus, Schimper. Traite d. paleont. veget., vol. ii. p. 51, pi. lix. fig. 4; pi. lxiv. 



fig. 4 (51), 6, 8 (not pi. lx. figs. 11, 12). 



1871. Lepidophloios laricinus, Weiss. Foss. Flora d. jiingst. Stk. u. RothL, p. 154, pi. xv. figs. 6, 7, and 9. 



1873. Lepidophloios laricinus, Carruthers. Geol. Mag., vol. x. p. 150, pi. vii. fig. 3. 



1880. Lepidophloios laricinus, Zeiller. Veget. foss. d. terr. houil. de la France, p. 113, pi. clxxii. figs. 5, 6. 

 1882. Lepidophloios laricinus, Renault (in part). Cours d. botan. foss., vol. ii. p. 44, pi. ix. figs. 5 and 7. 

 1886. Lepidophloios laricinus, Zeiller. Atlas Flore foss. d. bassin houil. d. Valen., pi. lxxii. figs, 1, 2 



(1886); Text, p. 471 (1888). 

 1890. Lepidophloios laricinus, Renault. Flore foss. terr. houil d. Comentry, part ii. p. 514 (11 pi. lxi. 



fig. 1). 

 1866. Lepidophloios Acadianus, Dawson. Quart. Jour. Geol. Soc, vol. xxii. p. 163, pi. x. fig. 54 (?pl. 



xi. fig. 51). 

 1868. Lepidophloios Acadianus, Dawson. Acad. Geol., 2nd ed., p. 489, fig. 171 (p. 457). 

 1888. Lepidophloios Acadianus. Dawson. Geol. Hist, of Fossil Plants, p. 166, fig. 44 (p. 121). 



1871. Lepidophloios acuminatum, "Weiss. Foss. Flora d. jiingst. Stk u. RothL, p. 155, pi. xv. fig. 8. 



1874. Lepidophloios acuminatus, Schimper. Traite d. paleont., vol. iii. p. 537. 



1872. Lepidophloios intermedins, Schimper (not Goldenberg). Traite d. paleont. veget., vol. ii. p. 51, pi. 



lxiv. figs. 4-8. 

 1884. 1 Lepidophloios dilatatus, Lesqx. (in part). Coal Flora, vol. iii. p. 781, pi. cv. fig 2. 

 1857. 1 Sigillaria Menardi, Goldenberg (not Brongt.). Flora Sarayp. foss., Lief. iii. p. 24, pi. vii. fig. 1. 

 1855. Knorria, Goldenberg. Flora Sarmp. foss., Lief. i. pp. 17 and 37, pi. ii. fig. 8b. 



Specific Characters. — Leaf-cushions elongated, imbricate, scarcely keeled, directed 

 downwards ; exposed portion of cushions rhomboidal or elongated transversely ; lateral 

 and upper angles acute, lower angle generally rounded. Leaf-scar placed at the summit 

 of the downward directed leaf-cushion, or only slightly below the summit,* rhomboidal, 

 or transversely rhomboidal-elongate, lateral angles very sharp and prominent, upper and 

 lower angles slightly rounded ; within the leaf-scar are three cicatricules placed centrally, 

 or slightly above or below the centre, the two lateral punctiform, the central punctiform 

 or subtriangular. When the leaf-scar is placed slightly below the apex of the deflexed 

 cushion, two lines run from its lateral angles, which meet the margin of the cushion a 

 short distance below the leaf-scar. The leaf-cushion frequently bears, immediately 

 beneath the leaf-scar, a small tubercle with a circular or subtriangular depression. 

 Fructification borne on Halonial branches. 



Remarks. — There can be no doubt that, morphologically, the leaf-scar is placed at 

 the apex of the cushion, whether the cushions remain upright, as in Lepidophloios 

 acerosus, L. and H., sp., or become deflexed, as in Lepidophloios Scoticus. In Lepi- 

 dophloios laricinus, though I have not seen any specimens showing the leaf-cushions 

 directed upwards [i.e., on specimens from which their true direction could be discovered), 



* These leaf-scars are usually described as being at the base of the cushion, and they certainly on impressions 

 appear to be at the base, but in reality they are at the summit of a deflexed cushion. I am led to this conclusion from 

 what has been said when describing specimens of L. Scoticus, ante, p. 552. The deflection of the leaf-cushions may 

 take place at a very early stage of development. 



