Xxil INTRODUCTION. 
to the Jura and Wealden than to the Chalk period. The following 
additions are made to the species already included among the 
plants from Ettingshausen’s Wealden localities *:— 
Chondrites furcillatus, Roem. P. Hoheneggeri, Sch. 
Baiera cretosa, Sch. P. obovatus, Sch. 
Cycadopteris Dunkeri, Sch. Zamites Gépperti, Sch., and four other 
Cycadites Heerii, Sch. species. 
Podozamites Zittelii, Sch. Widdringtonites gracilis, Heer ? 
In Velenovsky’s contributions to Mesozoic botany we have 
certain species recorded from Lower Cretaceous rocks in Bohemia 
which point to a close agreement in facies with the North German 
and English Wealden. These beds are classed by Velenovsky as 
Cenomanian.2 Among the ‘Ferns’? from Peruc and other 
localities the following species occur, which are identical with or 
closely allied to typical Wealden forms :— 
Thyrsopteris capsulifera, Vel. P. Albertini (Dunk.) =? Cladophlebis 
Laccopteris Dunkeri, Schenk = Micro- Albertsii (Dunk.). 
Pteris frigida, Heer. Dicksonia punctata (Sternb.). 
dictyon Dunkeri (Schenk). Jeanpaulia carinata, Vel. 
Tempskya varians (Corda). 
Among the Gymnosperms from the same beds there are certain 
forms which closely resemble Wealden species *—e.g. :— 
Thinnfeldia variabilis, Vel. =? Sageno- | Cunninghamites elegans, Heer. 
pteris Mantedli (Dunk.). Pinus Quenstedti, Heer. 
Nilssonia Bohemica, Vel. Eolirion primigenium, Sch. 
Sequoia Reichenbachi, Heer. 
PORTUGAL. 
In his ‘‘ Contributions & la flore fossil du Portugal” Heer has 
given descriptions and illustrations of the following species from 
two localities—Almargem and Valle de Lobos; these floras are 
considered by him to be in “intimate relation with the Wealden 
flora.”’+ 
1 Palexontographica, vol. xix. 1871, p. 23. 
* Abh. k. bohm. Ges. Wiss. vii. Folg. Band ii. 1888. 
3 Gymn. bohm. Kreid. 
* Secc. Trab. Geol. Portugal, 1881, p. vi. 
