FOSSIL PLANTS. 447 



specimen showing, at the same time, the character of Lepidodendron, or the 

 three vascular scars of the leaves and the semi-cylindrical and subcortical ap- 

 pendages of a Knorria. These we have evidently in our Lepidodendron Morisi- 

 anum. The value, therefore, of the genus Knorria, and its true characters, are 

 still questionable and open to discussion. 



Colchester and Morris. 



SlGILLARIA ALTERNANS, LI. and Hutt. 



Foss. Fl. 1, pi. 66. 



A remarkable specimen of this species has been found upon a piece of coal 

 at Morris, by Mr. S. S. Strong. In its lower part it shows the row of double 

 scars separated by a space of half an inch, elongated and irregularly oval. In 

 ascending, the scars approach insensibly till they pass to a row of single ovate 

 pointed cicatrices, joined together by their ends with an oval depression in the 

 middle. This last representation of Sigittaria alternans, LI and Hutt., is ex- 

 actly Sigillaria catenulata of the same authors, Foss. Flor. 1, pi. 58, and there- 

 fore both species ought to be united in one, as is done by Goldenberg. 



SIGILLARIA SPINULOSA, Germ, in Gold. 2. 



P. 20, PL 10, fig. 4. 



Our species merely differs by the lateral angles of the cicatrices being slight- 

 ly obtuse and not acute, as figured and described in the European species. 

 There is no trace of scars of spines. It may be a different and a new species, 

 but it is on a piece of coal, decorticated, and all the details of structure cannot 

 be recognized. 



Carmi, White county ; collected by E. T. Cox. 



SIGILLARIA CISTII, Brgt. 



Veg. Foss. 1, p. 418, PL 140, fig. 2. 



This species is placed in the genus Stemmatopteris by Corda, and appears to 

 be a true Caulopteris. Mr. Bradley has found at Morris a specimen referable 

 to this species; but it has only one scar, and from it to the base of the specimen 

 there is a surface half a foot long, without trace of any other scar. The whole 

 surface is ribbed or striated as in Brongniart's figure, the striae curving and 

 uniting under the scars. 



