36 CATALOGUE OP FOSSIL PLANTS 



Bemarh. — Perhaps Calamites verticillatus, L. et H., ought to 

 have heen chosen as the Type of this species, as it comhines 

 more of the characters of the genus than H. gigantea shews. 

 But as Schimper has already referred H. gigantea, L. et H., to 

 his genus Equisetides, and as Dr. Geinitz has long since referred 

 hoth Cyclocladia major, L. et H., and Calamites verticillatus, L. 

 et H., to Equisetites infundibuliformis, it seems better to retain 

 for this species the name given by Schimper (though he failed to 

 see the affinities pointed out by Geinitz, and seems to have en- 

 tirely ignored the Cyclocladia of Lindley and Hutton) than to 

 make another change. I have united Lindley and Hutton's 

 three species into one upon the evidence afforded by a specimen 

 in the Newcastle Museum combining the characters of Cyclocladia 

 with those of Hippurites gigantea. There can be no doubt, I 

 think, that the Asterophyllites grandis, P.P., pi. 17, represents a 

 whorl of branches, and Bruckmannia longifolia and tenuifolia, 

 Sternb., the verticillate foliage of the same species. Dr. Greinitz 

 is followed in considering the fruit-spike, Equisetum infundibuli- 

 forme, as the fructification of this species. Schimper figures 

 part of the stem and the fertile spike also under the name 

 Macrostachya infundibuliformis, and seems to have thought that 

 the spikes were attached to the large branch-scars. 



The remains of the stem of this plant found in this Coal-field 

 are very fragmentary, and appear to have been a long time 

 macerated in water, as numerous Microconchi are attached to 

 many of the specimens. The fruit-spike has not yet been re- 

 corded from this district. I have not followed Schimper in 

 adopting for this species the name given originally to the fertile 

 spike only. 



CALAMITES. 



Calamites (?) Cistii, Brongniart. 



Type — Calamites Cistii, Brongt., Hist. Yeg. Foss., pi. 20. 



Calamites Cistii, Brongt., Prod., pi. 38. 



? ,, ,, Geinitz, Yers. Steinkf . Sachs., pl,13,f.7. 



,, tuberculosus, Gutb., Yers. Zwick. Schwarzk., pi. 2, 



f. 4, 14 ; pi. 3b, f. 4. 



