have successively occupied the surface of the Earth. 351 



of its precise geological epoch and the totality of vegetable spe- 

 cies it comprehends. The most abundant and most characteristic 

 of these species is the Rhodomelites strictus, the branches of which, 

 interlaced and mixed with Zosterites, constitute the mass of these 

 lignites, with the wood of Coniferse, which have not yet been stu- 

 died, and the little, very rare, branches of Brachyphyllum Orhi- 

 gnianum. 



I have inserted in this epoch the two species of Cystoseirites 

 described by M. de Sternberg, and indicated by him as found 

 in beds between the Jurassic schists and the chalk in Transyl- 

 vania. Does this fossil flora correspond to a formation almost 

 entirely marine, but contemporaneous with the Wealden epoch ? 

 This can only be decided by new investigations, but the analogy 

 of the Brachyphylla of the two epochs leads to such a supposition. 



2. Cretaceous Epoch. 



Aiuphigenous Cryptogams. 



Alg^e. 



Confervites fasciculata,Br. — Bonih., 

 England. 



ffigragropiloidesj Br. — Bornli. 



Woodwardii, Mant. — England, 



Norfolk. 



Sargassites Lyngbyanus, Br. — 

 Bornh. 



HalyseritesReicliii,S^erM6. — Nieder- 

 schona. 



Chondrites furcellatus, Rom. — Sax- 

 ony, Beauvais. 



Mantelli, Rom. — Saxony. 



Targionii, Brong. — Beavivais. 



cj^linilricus, Sternb. — Teschen ; 



Bohemia. 



Doubtful Algce, 



Fucoides Brongniartii, Mant. — Sus- 

 sex. 

 CyUndrites, of Gbppert, 3 species. 



Acrogenous Cr3rptogams. 



Ferns. 



Protopteris Singeri, Presl. — Silesia. 



Buvignieri, Br. — Grandpre. 



Pecopteris Reichiana, Br. — Nieder- 



schona. 



striata, Sternb. — Salila. 



boliemica, Corda. — Bohemia. 



Zippci, Corda. — Bohemia. 



lobifolia, Corda.- — Bohemia. 



And two new species from Nicder- 



schona. 



Monocotyledons. 



Palms. 



Flabellaria chamaeropifolia, Gojjp. — 



Silesia. 

 Palmacites varians, Corda. — Boh. 



Gymnospermous Dicotyledons. 



CyCADEjE. 



Cycadites Nilssonianus, Br. — Sca- 

 nia. 



Zamites cretacea, Br. — N. Schona. 

 (Pteroph. cretaceum, Rossm.) 



Microzamia gibba, Corda. — Boh. 



Zamiostrobus ovatiis, Gopp. — En- 

 gland. 



familiaris (male cone). — Bo- 

 hemia. 

 (Zamites familiaris, Corda.) 



Guerangeri (male cone). — Le 



Mans. 



CoNIFERiE. 



* Cupressineae. 



Widdringtonites fastigiatus, Endl. — 



Bohemia. 

 Cryptomeria primaeva, Corda. — Boh . 



** Abietineae. 



Abietites Benstcdi. — Gopp. 



ohlonguS) Liridl. — Lyme-Regis, 



Grandpre. 

 — ■ — exogyrns, Corda. — Bohemia. 

 Pinites Reussii, Corda. — Bohemia. 



