m] PSEUDOSPOROCHNUS AND BROGGERIA 



.35 



another representative of it (Fig. 14) occurs in the Middle Devon- 

 ian of Bohemia and was referred by Potonie and Bernard 1 to 

 the genus Spiropteris. These examples are again all equally 

 obscure. 



PSEUDOSPOROCHNUS. 

 '(Figs. 15, 16.) 



Pseudosporochnus, Potonie & Bernard 2 , 1904. Axis stout and 

 undivided below, bulbous? at base (Fig. 15), freely branched 

 above (Fig. 16) in a pedate manner, secondary branches further 

 dichotomised above, the slender branches of the third order 

 being repeatedly and frequently dichotomised so that the higher 

 parts of the secondary axes are clothed with fairly dense tufts 

 of delicate, dichotomous, very narrow branchlets. The stems are 

 known to be vascular. 



Distribution. Middle Devonian, Bohemia. 



This very remarkable plant is apparently only known from 

 Bohemia. No fructification is described. 



Fig. 17. Broggeria norvegica, Nath., from the Middle Devonian of 

 Western Norway. (Somewhat reduced.) After Nathorst (1915). 



1 Potonie and Bernard (1904), p. 11, Text-figs. 1-5 on p. 12. 



2 Potonie and Bernard (1904); Stur (1881). 



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