FLORA OP THE CARBONIFEROUS PERIOD. 441 



straight leaves, 0'5 inch long, twenty or more in a whorl, and show- 

 ing two lateral nerves in addition to the median nerve. This and 

 No. 2 would be placed by some authors in Annularia. 

 Annularia, Sternberg. 



Annularia galioides, Zenker. 



M. C. Grand Lake, 0. F. Hartt ; U. C, Pictou, J. W. D. ; Bay 

 de Chaleur, Logan ; Sydney, R. Brown. 



Sphenophyllum, Brongt. 



1. Sphenophyllum ^marginatum, Brongt.* 



M. C. Sydney, R. Brown ; Grand L., C. F. Hartt ; Bay de 

 Chaleur, Logan ; Pictou, J. W, D. 



2. 8. longifolium, Germar. 



U. C. Pictou, J. W. D., M. C. Sydney, R. Brown. 



3. S. Saxifragifolium,'Stexnbcrg, Bay de Chaleur, Logan. 

 Elongate, much forked variety, closely allied to & bifurcatum 



Lesquereux. 



4. S. Sdilotheimii, Brongt. 

 M. C. Sydney, Bunbury. 



5. S. erosum, L. and H. 

 M. C. Sydney, Bunbury. 



The two last species are regarded by Geinitz as varieties of S. 

 emarginatum. A specimen of the last named species in Sir 

 William Logan's collection shows a woody jointed stem like that 

 of Aster ophyllites, giving off branches at the joints. These again 

 branch and bear whorls of leaves. The stem shows under the micro- 

 scope a single bundle of reticulated or scalariform vessels like 

 those of some ferns, and also Hke those of Tmesipteris as figured by 

 Brongniart. This settles the affinities of these plants, as being 

 with ferns or with Lycopodiacece. 



Pinnularia, L. and H. 



1. Pinnularia capillacea, L. and H. 

 M. C. Sydney, R. Brown. 



2. P. ramosissima, s. n. 



M. C. Joggins, J. W. D. More slender and ramose than the last. 



3. P. crassa, N. S. . 



L. C. Horton, C. F. Hartt. Branching like P. capillacea but 

 much stronger and coarser. 



All these are apparently branching fibrous stems or roots, of 

 soft cellular tissue with a thin outer bark. Perhaps they are 

 roots of Aster ophyllites, or perhaps branchlets of an aquatic plant. 



