NOTE ON THE STRUCTURE OF ANNUL ARIA 

 AUSTEALIS, FEISTMANTEL. 



By R. Etheridge, Jun., &c. 



(Palaeontologist to the Australian Museum, and Geological 

 Survey of N. S. Wales). 



(Plates II. & III.) 



In his " Palaeozoische unci Mesozoische Flora des ostlicheu- 

 Australiens," * Dr. Ottokar Feistmantel described a species of the 

 well-known Equisetaceous plant Annularia, as A. ausfralis.f In 

 this genus the stem is articulate, possessing solid diaphragms at 

 the joints, the former giving support to pinnate or bipinnate 

 branches. The leaves are verticillate, and more or less obliquely 

 articulate on the branches, whilst those placed laterally, in regard 

 to their position on the branch, are generally longer than the 

 others. Each leaf is always more or less elongate, always lanceo- 

 late, and traversed by a median nerve. 



The specimens figured by Feistmantel were very fragmentary, 

 consisting of six isolated, or partially isolated, whorls of leaves 

 and are from the Lower Coal Measures at Greta, associated with 

 Glossoptei'is. It must not be forgotten, however, that the late 

 Rev, W. B. Clarke, in his paper " On the Occurrence and 

 Geological Position of Oil-bearing Deposits in New South 

 Wales,"! mentions that the cannel coal at Reedy Creek is "in 

 places full of fronds of Glossojjteris, and a plant branching after 

 the manner of Asterojjhyllites, which lies in perfect unrumpled 



* 4to Cassel, 1878-79. 



+ PI. 25, f. 6 and 6a. 



t Quart. Journ. Geol. Soc. 1866, xxii. p. 445. 



