188 FOSSIL PLANTS. 



Weiss Foss. Flora d. Jung. Steink. u. d. Eothl. p. 164, pi. xv. 1-4. 



Verhandl. d. Natur. Vereines d. Preuss Eheinl. u. Westph. 



1868, p. 88. 



Zeiller, Veget. Foss. du Terr. Houil. p. 131. 

 SiffUlaria pyriformis. 



Boulay, Terr. Houil. du Nord de la France, p. 45. 

 Brongniart, Prodrome, p. 65. 



Hist. d. Veget. Foss. p. 448, pi. cliii. figs. 3, 4. 



Bronn, Index Palseont. p. 1145. 

 Feistmantel, Vers. d. Bohm. Kohlenab. p. 237, pi. li. fig. 6. 



Steinkohl. u. Perm.-Ablager. p. 98. 



Giebel, Deutschl. Petrefacten, p. 76. 



Goldenberg Flora Sarsep. Foss. heft ii. p. 30, pi. viii. fig. 4. 

 Schimper, Traite" d. PalSont. Ve"get. vol. ii. p. 85, pi. Ixviii. fig. 5. 

 Unger, Synop. Plant. Foss. p. 122. 



Genera et Species, p. 238. 

 Weiss, Foss. Flora d. Jung. Steink. u. d. Eothl. p. 164. 



Verhandl. d. Natur. Vereines d. Preuss. Eheinl. u. Westph. 



1868, p. 88. 

 SiffUlaria trigona. 



Konig, Icones Fossilium Sectiles, pi. xv. fig. 183. 



SiffUlaria affinis. 



Konig, Icones Fossilium Sectiles, pi. xiv. fig. 165. 



Remarks. If the gradual elevation of the leaf-scars from above downwards 

 is regarded as an essential character of SiffUlaria mammillaris, then SiffUlaria 

 pyriformis, Brongniart, cannot be united with it. It should not however be 

 ignored that, in many specimens which have been subjected to pressure, the 

 elevated nature of the leaf-scar is entirely obliterated, and it is this state of 

 SiffUlaria mammillaris which I believe constitutes the SiffUlaria pyriformis of 

 Brongniart. 



Weiss, in his " Fossil Flora der jiingsten Steinkohlenformation und des 

 Eothliegenden," has entered very clearly into this subject, and probably, as he 

 indicates, some other species will eventually require to be united with 

 SiffUlaria mammillaris. 

 . Horizon. Coal Measures. 



Localities. British. Durham : Sunderland. Lancashire : Ashton-under- 

 Lyne, near Lancaster. Worcestershire : Dudley ; 

 Forest of Wyre. Wales (South): Ebbw Vale, 

 Merthyr-Tydvil, 



Foreign. Belgium : Li6ge. Silesia : Waldenburg. Westphalia : 

 Herten. 



Sigillaria Boblayi, Brongniart. 



SiffUlaria Boblayi. 



Boulay, Terr. Houil. du Nord de la France, p. 40. 

 Brongniart, Prodrome, p. 65. 



Hist. d. Vege"t. Foss. p. 446, pi. cliv. 



Bronn, Index Palseont. p. 1143. 



Eoehl, Foss. Flora d. Steink. Form. Westph. p. 104, pi. ix. fig. 6. 

 Schimper, Traite d. PalSont. Veget. vol. ii. p. 84. 

 Unger, Synop. Plant. Foss. p. 122. 



Genera et Species, p. 237. 



Remarks. Eoehl unites with this species SiffUlaria Grisebachi, Eomer 

 (Palaeontographica, vol. x. p. 43, pi. x. fig. 3), but judging from Burner's 

 figure and description it seems very different from Brongniart's plant. 

 Horizon. Coal Measures. 

 Locality. British. (?) 



