XL VI] BRACHYPHYLLUM 321 



Among these are some of the shoots referred by him to Echinostrobus 

 expansus 1 and others described as E. rajmahalensis Feist, and 

 E. rhombicus 2 . An examination of some of the figured specimens 

 referred by Feistmantel to Pachyphyllum (= Pagiophyllum) peri- 

 grinum (Lind. and Hutt.) leads me to include them at least pro- 

 visionally in B. mamillare. The generic distinction between the 

 form-genera Brachyphyllum and Pagiophyllum is by no means 

 always clearly marked. 



Among many European examples of the Brachyphyllum mamil- 

 lare form of Conifer, reference may be made to the illustrations 

 by Saporta of the French Jurassic specimens referred to Brachy- 

 phyllum Moreauanum Brongn., B. nepos Sap. and a form with 

 more slender branches, B. gracile 3 . 



Zeiller 4 records specimens of foliage-shoots with cones super- 

 ficially resembling those of Sequoia from Lower Jurassic beds in 

 Madagascar which he assigns to Brachyphyllum and compares with 

 B. nepos. 



Brachyphyllum spinosum Seward. 



A Wealden species 5 founded on several well preserved specimens 

 from the coast of Sussex characterised by the possession of short, 

 thorn-like, lateral branches clothed with fleshy leaves with a 

 longitudinally striated lamina of the usual Brachyphyllum type. 

 Two or three of these spinous shoots occur at the same level on the 

 parent-axis. The stouter branches are covered with spirally dis- 

 posed polygonal leaf -bases, while on the more slender branches the 

 broad and short leaves assume a more or less regular decussate 

 disposition. In leaf -form and branching-habit this species agrees 

 closely with several other examples of the genus, but the spinous 

 shoots are a distinctive feature. 



Brachyphyllum obesum Heer. 



This species originally described from Lower Cretaceous strata 

 in Portugal 6 is represented in the Potomac formation by specimens 

 referred by Fontaine 7 to Brachyphyllum crassicaule, and there are 



.! Feistmantel (76 2 ) PL ix. figs. 69; PI. x. figs. 3, 4. 



2 Ibid. (79) PI. xii. figs. 2, 10; (82) PL m. fig. 6. 



3 Saporta (84) Pis. 165172. * Zeiller (00) p. 3. 



5 Seward (95) A. p. 215, PL xvn. 6 Heer (81) p. 20, PL xvn. 



7 Fontaine (89) B. p. 221, PL c. fig. 4; PL cix. figs. 17. 



s iv 21 



