FLORA OP TUB CARBONIFEROUS PERIOD,, 437 



Variety (i) Areoles narrow, elongate, bark smooth or striate. 

 " (Jc) alternans, with areoles in double rows on broad ribs 

 separated by deep furrows. Probably old furrowed roots. 

 " (?) knorroides, prominent bosses or ridges instead of 



areoles. These are imperfectly preserved specimens. 

 The varieties (a) (b) (c) (e) (i) have been seen attached to- 

 trunks of Sigillariae of that group distinguished by broad and pro- 

 minent ribs, Sigillaria proper of the above arrangement. Stig- 

 mariae, like Sigillariae, are exceedingly abundant in the middle 

 coal measures, and are comparatively rare in the lower carbon- 

 iferous and newer coal formations. 



Calamodendron, Brongt. 



1. Calamodendron approximatum, Brongt. 



M. C. Sydney, R. Brown ; M. C. Joggins, Pictou, J. W. D. ;.- 

 Coal Creek, C. B. Matthew. 



This plant is evidently quite distinct from Catamites proper. 

 The calamite-like cast is a pith or internal cavity, surrounded by a 

 thick cylinder of woody tissue consisting of scalariform vessels and 

 woody fibres with one row of round pores ; external to this is a 

 bark of cellular and bast tissue. The structure appears to be allied 

 to that of Sigillaria, and is one of the most common in the beds, 

 of bituminous coal. 



2. C. obscurum, s. n, 

 M. 0, Sydney, J. W. D. 



This is a calamite-like fragment found in a block of Sydney coal,, 

 in the state of mineral charcoal. The external markings are ob- 

 scure but the structure is well preserved. It differs from the last 

 in having large ducts with many rows of pores, or reticulated, in- 

 stead of scalariform vessels." 



Cyperites, L. and H. 



Cyperites, • 



Middle and upper coals, everywhere. 



These elongate linear leaves have two or three ribs and the 

 central band between the ribs raised above the margin : one spe- 

 cies has been seen attached to Sigillaria Scloiheimiana. 



The leaves of Sigillaria elegans are different, being as broad 

 as the areoles of the stem and with several parallel veins. 



. Antholithes, Brongt. 



I include under this name spikes of inflorescence, or of fruits, usu- 

 ally showing buds or scaly floral leaves, and sometimes ovate fruits 



