﻿HEER ON THE ANTHRACITE PLANTS OF THE ALPS. 99 



Near this there occurs a pinna with seven pinnules, which probably 

 belongs to the same plant. Thus the pinna may have had seven 

 pinnules at the base, five in the middle, and three at the extremity. 



This beautiful plant has been named by me after M. A. Escher, 

 who brought it from Petit-Cceur. 



(f)8. Neuropteris Soretii, Brongn. 

 Erbignon ; Petit-Cceur. 



(f)(Aus.) 9. Neuropteris alpina, Sternb. 

 Erbignon ; Petit-Cceur ; Col de Balme. 



This species, first found at the Stang-Alp in Styria, appears fre- 

 quently in the anthracitic schists, and has a wide range among them. 

 It is especially remarkable from having the bases of the pinnules 

 connected for their whole breadth with the leaf-stalk [adnate]. 



10. Odontopteris Brardii, Brongn. 

 Col de Balme ; Petit-Cceur. 



One of the most abundant plants in the Anthracite : but, as Mr. 

 Bunbury has also observed J, it is rare to find specimens with such 

 sharp-pointed leaves as in Brongniart's figure (pi. 76). 



11. Odontopteris obtusa, Presl, sp.; Brongn. pi. 78. f. 3, 4. 

 Petit-Cceur. 



Between this and the O. Brardii there are intermediate forms, 

 which make it probable that the first is a variety of the other. In 

 one specimen the leaflets are not symmetrical, as Bunbury has noticed, 

 being longer, slenderer, and more pointed on one side of the pinna 

 than on the other. 



(*)12. Odontopteris minor, Brongn. 

 Col de Balme. 



The Museum at Basle possesses a large and beautiful frond of this 

 plant : it is \02' n long : the main stem is stout and of uniform thick- 

 ness ; so that the leaf must have been still longer. The pinnae stand 

 wide apart and at very different distances : they are about 35'" long, 

 and furnished with lanceolate leaflets about 3"' long, which do not 

 touch one another. Near this large frond lie some separate pinnse, 

 and another fragment of a frond near the extremity where the pinnse 

 are closer together. 



(*)13. Cyclopteris reniformis, Brongn. 

 Erbignon. 



A specimen in the Basle Museum agrees well with this true Coal- 

 plant. The leaf is large, reniform, hollowed out at the base ; not 

 entirely preserved. The ribs at the base are strong, and bifurcate. 



X Quart. Journ. GeoL Soc. 1819, vol. v. p. 138. 



