92 



THE OLDER MESOZOIO FLORA OF VIRGINIA. 



GENERAL OBSERVATIONS ON THE FLORA. 



An account having now been given of all the plants as yet found fossil 

 in the older Mesozoic strata of Virginia, the general relations of this flora 

 may now be considered. 



The following table gives the plants arranged under several heads: 1. 

 Those plants peculiar to the older Mesozoic of Virginia, and without near 

 relations in other countries. 2. Plants found in the Trias of other regions, 

 or nearly related to Triassic plants. 3. Plants found in the Jurassic of 

 other countries, or nearly related to such plants. 4. Rhsetic plants, or 

 those nearly allied to such. 



Fossil Plants from the Older Mesozoic of Virginia. 



Fossil plants from the older Me- 

 sozoic of Virginia. 



Plants peculiar 

 to Virginia. 



Plants found in the 

 Trias or allied to 

 such. 



Plants found in the 

 Jurassic or allied to 

 such. 



Plants found in the 

 Rhaatic or allied to 

 such. 



Equisetum Rogersi 



JSchizoneura, species ? 



S. Virginiensis 



Macrotceniopteris magnifolia . 



Allied to E. columnare. ] 



Near to S. Meriani. 



M. crassinervis 



Acrostickides linncecefolius . 



A. rhombi/olius . 



Allied to Neuropteris 

 Schcenleiniana. 



A. microphyllus 



A. densifolius 



Mertensides buUatus. 

 M. distans 



Near to Pecopteris gra- 

 cilis. 



Asterocarpus Yirginieneii . 



A . platyrachis 



A.penticarpus 



Pecopteris rarinervis 



Gladophlebis sub/alcata 



Near to A. Meriani. 



G. auriculata 



O. ovata 



€. microphylla 



0. pseudowhitbicnsis 



G. rotundiloba 



Lonckopteris Virginiensis 



Glathropteris ptatyphylla, expama 



Pseudodanceopsis reticulata 



P. nervosa 



Sagenopteris rhoifolia 



Dicranoptcris spec. ? 



Pterophyllum inceguale 



P. affi,ne 



Near P. Andrccunum. 



Near to S. hoerensis. 

 Very near to M. gigan- 

 tea. 



Near to A. Goeppertia- 



nus. 

 Allied to Cyclopteris 



pachyrackis. 



N ear to Gleichenites mi- 

 crophyllus. 



Allied to Asplenites 

 Rosscrti. 



NearD. Koineriana. 



