FOSSIL FLORA OF THE STAFFORDSHIRE COAL FIELDS. 103 



Alethopteris Serli Brongt., sp. 



1832 or 1833. Pecopteris Serlii, Brongt., Hist. d. veget.foss., p. 292, pi. lxxxv. 

 1837. ,, ,, L. & H., Fossil Flora, vol. iii. pi. ccii. 



1886. Alethopteris Serli, Zeiller, Flore foss. bassin houil. d. Valen., p. 234, pi. xxxvi. figs. 1, 2 ; 

 pi. xxxvii. figs. 1, 2. 



Note. — Very rare. 

 Horizons and Localities. — 



Roof of Brooch Coal: Himley. 



Ten-foot Ironstone Measures : Clayscroft Openwork, Coseley, near Dudley. 



Alethopteris Grandini Brongt. 



1832 or 1833. Pecopteris Grandini Brongt., Hist. d. veget.foss., p. 286, pi. xci. figs. 1-4. 

 1886. Alethopteris Grandini, Zeiller, Flore foss. bassin houil. d. Valen., p. 227, pi. xxxviii. figs. 1, 2. 

 1888. ,, ,, Zeiller, Flore foss. terr. houil. d. Commentry, prem. part, p. 203, pi. xxi. 



figs. 1-8. 



Note. — Very rare. 



Horizons and Localities. — . ■ 



Blue Measures above Brooch Coed: Jubilee Pit, Sandwell Park, West 

 Bromwich. 



Roof of Brooch Coal : Holly Hall, near Dudley. 



Ten-foot Ironstone Measures : Clayscroft Openwork, Coseley, near Dudley. 



Alethopteris integra Gothan, sp. 



1906. Desmopteris integra, Gothan, in Potonie, Abbild. u. Besehreib. foss. Pflanzen, No. 64, plate, and 

 text-fig. 1. 



Description. — Frond probably large, tripinnate or possibly quadripinnate on lower 

 primary pinnse ; rachis striated ; ultimate pinnae broadly linear-lanceolate, opposite 

 or alternate, gradually contracting from the base upwards and terminating in a more 

 or less blunt point ; uppermost almost entire or bearing broad shallow blunt lobes ; 

 lower, more or less deeply divided into pinnules. Pinnules opposite, oblong, decurrent, 

 blunt, the basal pinnules united to each other for about ^ to \ of their length ; the 

 upper pinnules become more and more united to each other until they assume the 

 form of blunt lobes at the base of the oblong obtuse terminal pinnule. Nervation : 

 central vein equidistant from margins, decurrent, flexuous, dividing into several 

 branches before reaching the apex ; lateral veins alternate, slightly flexuous, dividing 

 1-3 times, rather distant ; accessory simple or once-divided veinlets enter the 

 pinnules from the rachis and extend into the lateral united portions of the pinnules. 

 (Text-fig. 3.) 



