480 THE CARBONIFEROUS SYSTEM. 



Grand Lake (C. F. Hartt) ; U. C., Pictou (J. W. D.) ; Bay de 

 Chaleur (Logan) ; Sydney (R. Brown). 



2. A. equisetiformis, L. and H. M. C, Sydney (R. Brown); 

 Pictou (J. W. D.). 



Sphenophyllum, Brongn. 



1. Sphenophyllum emarginatum, Brongn. M. C, Sydney (R. 

 Brown) ; Grand Lake (C. F. Hartt) ; Bay de Clialeur (Logan) ; Pictou 

 (J. W. D.). 



2. S. longifolium, German U. C, Pictou (J. W. D.) ; M. C, Sydney 

 (R. Brown). 



3. S. saxif rag (folium., Sternberg. Elongate much-forked variety, 

 closely allied to S. bifurcation, Lesquereux. Bay de Chaleur 

 (Logan). 



4. S. Schlotheimii, Brongn. M. C, Sydney (Bunbury). 



5. S. erosum, L. and H. M. C, Sydney (Bunbury) (Fig. 165, C). 

 The last two species are regarded by Geinitz as varieties of 8. 

 ^marginatum. A specimen of the last-named species in Sir William 

 Logan's collection shows a woody jointed stem like that of Asterophyl- 

 lites, giving off branches at the joints ; these again branch and bear 

 whorls of leaves. The stem shows under the microscope a single 

 bundle of reticulated or scalariform vessels like those of some ferns, 

 and also like those of Tmesipteris, as figured by Brongniart. This 

 settles the affinities of these plants as being with ferns or with Lyco- 

 podiacea, rather than with Equisetacea, as at p. 444 above. 



Pinnularia, L. and H. 



1. Pinnularia capillacea, L. and H. M. C, Sydney (R. Brown). 



2. P. Ramosissima, spec. nov. (Fig. 165, D). More slender and 

 ramose than the last. M. C, Joggins (J. W. D.). 



3. P. crassa, spec. nov. Branching like P. capillacea, but much 

 stronger and coarser. L. C, Horton (C. F. Hartt). All these are 

 apparently branching fibrous roots, of soft cellular tissue with a thin 

 epidermis and slender vascular axis. Perhaps they are roots of 

 Aster ophyllites. 



Genus Nceggerathia, Sternberg. 

 1. Nceggerathia dispar, spec. nov. (Fig. 73). A remarkable frag- 

 ment of a leaf, with a petiole nearly three inches long, and a fourth 

 of an inch wide, spreading abruptly into a lamina, one side of which 

 is much broader than the other, and with parallel veins running up 

 directly from the margin as from a marginal rib. It appears to be 



