THE FLORA OF Tin: COAL FORMATION. IT". 



striate, 035 inch wide. Sears nearly as wide as the ribs, rounded, hex- 

 agonal, one inch distant; lateral macular marks narrow, central Uu 

 On the ligneous surface .--ears single, round, oblong; hark very thin. 

 M. C, Joggins (J. W. D.). 



12. 8. (?) A small erect stem, somewhat like 8. fiexuosa. 



M. C, Joggins (J. W. D.). 



13. 8. (Clathraria) Menardi, Brongn. M. C, Sydney (R. Brown), 

 U. C, Picton (J. W. D.). 



1-4. S. (Asolanus) Sydnensis, spec. nov. Ribs obsolete; cortical 

 ami ligneous surfaces striate; vascular scars two, elongate longitu- 

 dinally, and alike on cortical and ligneous surfaces ; scars 1*1 inch 

 distant, in rows 06 inch distant. Stigmarian roots, same with 

 variety h of Stigmaria, as described below. M. C, Sydney (K. Brown). 



15. S. organum, L. and H. M. C, Sydney (R. Brown). 



16. S. elongata, Brongn. M. C, Sydney (R. Brown). 



17. S. fiexuosa, L. and H. M. C, Sydney (R. Brown's list in 

 " Acadian Geology"). 



18. S. pachydermia, L. and II. M. C, Sydney (R. Brown's list). 



19. S. (Fav.) Bretonensis, spec. nov. (Fig. 161, F). Like & tessel- 

 lata, but areoles more hexagonal, bark thin and smooth on both sides, 

 and furrow above the scars arcuate and with a central punctiform 

 elevation. M. C, Sydney (R. Brown). 



20. 8. eminens, spec. nov. (Fig. 161, H). Like S. obovata, Lesqx., 

 but with narrower ribs, and larger and less distant areoles, each 

 with a slight groove above. M. C, Sydney (R. Brown). 



21. & Dournaisii, Brongn. M. C, Joggins (J. TV. D.). 



22. S. Knorrii, Brongn. M. C, Sydney (R. Brown). 



Syringodendron, Brongn. 



Obscure specimens, referable to a narrow-ribbed species of this 

 genus, occur in the Lower Carboniferous beds at Ilorton and Onslow. 



Stigmaria, Brongn. 

 Stigmaria ficoides, Brongn. (Fig. 30, d). Under this name I place all 

 the roots of Sigillaria; occurring in the Carboniferous rocks of .Nova 

 Scotia. They belong, without doubt, to the different species of Sigil- 

 larioid trees; but it is at present impossible to determine to which; 

 and the specific characters of the Stigmaria} themselves are, as might 

 he anticipated, evanescent and unsatisfactory. The varieties which 

 nr in Nova Scotia, discarding mere difference of preservation, may 

 he arranged as follows : — 



