90 DR ROBERT KIDSTON ON THE 



Boweria Schatzlarensis Kidston. 



1885. Hapalopteris Schatzlarensis, Stur (pars), Carbon-Flora d. Schatz. Schichten: Die Fame, p. 58, 



pi. xl. fig. 1 (non figs. 2-6). 

 1911. Boweria Schatzlarensis, Kidston, Mem. Musee roy. d'hist. not. de Belgique, vol. iv. p. 34 



(refs. in part), text-figs. 5, 6, p. 32. 

 1890. Renaultia Schatzlarensis, Kidston, Trans. York. Nat. Union, part xiv. p. 32. 

 1890. Cf. Renaultia (Sphenopteris) microcarpa, Potonie\ " Ueber einige Carbonfarne," part i., Jahrb. 



d. It. preitss. geol. Landesanstalt fitr 1889, p. 25, pi. v. figs. 3, 3a. 

 1869. Sphenopteris Bronni, Roehl (non Gutbier), Foss. Flora Steink.-Form. Westphalens, p. 57, pi. xvi. 



figs. 5, 5a. 



Remarks. — Under the name of Hapalopteris Schatzlarensis Stur included two 

 species. This has been pointed out by Behrend * and Gothan. That given at fig. 1, 

 pi. xl. by Stur is specifically distinct from the other specimens included by him 

 under the same name. This fig. 1 forms the type of the genus Boweria, whose 

 fructification consists of small annulate, circular or oval sporangia, free, one placed on each 

 veinlet at the margin of the pinnule, and measuring about 0"40 mm. in their greatest 

 diameter. The annulus forms a band of two rows of prominent cells which passes 

 across the apex of the sporangium and extends a very short distance down the sides. 

 The limb of the fertile pinnules is slightly reduced, the segments being obtuse or 

 truncate and not pointed as in the sterile condition. The other of the two species 

 included by Stur under the same name is placed in the genus Sphenopteris under the 

 specific name given it by Stur — Sphenopteris Schatzlarensis. 



Boweria Schatzlarensis Kidston and Sphenopteris Schatzlarensis Stur seem to 

 have a similar distribution. Both occur in the South Staffordshire Coal Field, but are 

 not common. They also both occur in the Yorkshire Coal Field, where, however, 

 Boweria Schatzlarensis appears to be the more common of the two. 



I also possess a small fertile specimen (No. 3541) of Boweria Schatzlarensis, 

 received a few years ago from M. L. Deltenre, Mariemont, from Ste. Henriette Pit, 

 on which the annulus of the sporangia is well shown. 



Horizon and Locality. — Ten-foot Ironstone Measures : Clayscroft Openwork, 

 Coseley, near Dudley. 



Crossotheca Zeiller. 

 Crossotheca Honinghausi Brongt., sp. 



1829. Sphenopteris Honinghausi, Brongt., Hist. d. veget. foss., vol. i. p. 199, pi. Hi. 

 1865. ,, ,, Andrae, Vorwelt. Pflanzen, p. 13, pis. iv., v. 



1905. Crossotheca Honinghausi, Kidston, Proc. Roy. Soc, ser. B, vol. lxxvi. p. 358, pi. vi. figs. 1-5. 



1906. „ „ Kidston, Phil. Trans., ser. B, vol. cxcviii. p. 413, pi. xxv. figs. 1-16, 



pi. xxvi. figs. 17-32, text-figs. 1-7. 



* Behrend, Uber einige, Carbonfarne aus der Familie der Rphenopteriden : Inaugural Dissertation, 1908, p. 37. 

 Also in Jahrb. d. k. preuss. geol. Landesanstalt, vol. xxix., I., Heft iii. p. 679 ; Gothan, Oberscldesische Steinkohlenflora 

 i. Theil, p. 139, 1913. 



