40 GEOLOGICAL MEMOIRS. 



On the Coal-plants of Bohemia. By M. Stub. 



[Proceed. Imp. Geol. Instit. Vienna, March 13, I860.] 



The fossil plants from the Coal-basin of Bakonitz (Bohemia) present 

 53 species, and may be subdivided into four distinct local florse. 

 These species are distributed among 21 genera of 10 families. 



Calamitece (Calamites) 3 



Asterophyllitece ( Asterophyllum, Annularia, Sphenophyllum) 6 

 Neuropteridece (Neuropteris, Nceggerathia, Schizopteris, Dic- 



tyopteris) 6 



Sphenopteridece (Sphenopteris) 5 



Pecopteridece (Asplenites, Pecopteris, Alethopteris, Cya- 



theites) 13 



Stigmariece (Stigmaria) 1 



Sigillariea} (Sigillaria) 4 



Lepidodendrece (Lepidodendron, Knorria,Lepidostrobus,Car- 



diocarpon) 12 



Lycopodiacece (Cordaites) 2 



Palmacece (Flabellaria) 1 



The following species, Calamites communis, Annularia fertilis, 

 Noeggerathia foliosa (particularly frequent around Bakonitz), Ale- 

 thopteris pteroides, Cyatheites Miltoni, Stigmaria jicoid.es, Lepido- 

 dendron Haidingeri, and L. acideatum, as also the Sigillariea, occur 

 generally in considerable number as individuals. 



Calamites communis, Annidaria fertilis, Cyatheites oreopterides, C. 

 Miltoni, C. arborescens, Stigmaria ficoides, Cordaites borassifolius, and 

 Flabellaria Stembergi occur both in the shales forming the roof of 

 the coal-bed and in those immediately beneath it, so that the flora of 

 both these shales may be considered as nearly identical ; and the 

 existence of two distinct Florae within the basin of Bakonitz may 

 indubitably be admitted : the one of Aster ophyllitece, Neuropteridem, 

 Sphenopteridece, and other genera of Felices and Lycopodiacece, con- 

 taining but a small portion of carbonaceous substances ; the other, 

 Sigillarim and Lepidodendra, which have chiefly contributed mate- 

 rials to the coal-bed. Two species (Knorria imbricata and Lepido- 

 dendron (Sagenaria) Veltheimianum), found in some few fragments 

 within the Bakonitz basin, are characteristic of the lowest strata of 

 the Carboniferous group. 



The flora of this basin bears a striking general resemblance to that 

 of Badnitz (known long ago through Count C. Sternberg's splendid 

 publications), and to the flora of the coal of Zwickau (Saxony), lately 

 described and figured by Prof. Geinitz. Some few species, however, 

 occurring in the basin of Bakonitz, are wanting in the coal-measures 

 of Badnitz ; these are Sphenopteris rutafolia, Asplenites cristatus, 

 Alethopteris aquilina, Al. pteroides, Al. muricata, Cyatheites Miltoni, 

 Cy. unitus, Cy. dentatus, Sigillaria mammillaris, S. oculata, S. elon- 

 gata. [Count M.] 



