134 THE OLDER MESOZOIC FLORA OF VIRGINIA. 



Figs. 3 J and 3 c. Single sori of somewhat different form, much magnified. 



Fig. 4. A portion of the lower part of a compound sterile pinna. 



Fig. 4 a. Pinnules of Fig. 4, magnified to show the nervation. 



Fig. 5. Fragment of pinna showing fertile and sterile pinnules on the same .pinna. 



Fig. C. Summit of a sterile compound pinna. 



PLATE XXVI. 



Fig. 1. Asterocarpus platyrachis, spec. nov. Pages 46 to 47. Upper part of a fertile compound pinna. 

 Figs. 2, 2a. Asterocarpus penticarpus, spec. nov. Page 48. 



Fig. 2. Portion of a fertile frond. 



Fig. 2 a. Pinnules of Fig. 2, magnified to show the sori. 

 Figs. 3-4 a. Pecopteris rarinervis, spec. nov. Pages 48 to 49. 



Fig. 3. Portion of an ultimate pinna. 



Fig. 3 a. Pinnule of Fig. 3, magnified to show nervation. 



Fig. 4. Summit of an ultimate pinna. 



Fig. 4 a. Pinnules of Fig. 4, magnified to show nervation. 

 Figs. 5, 5 a. Cladophlebis ovata, spec. nov. Pages 50 to 51. 



Fig. 5. Normal form of the plant. 



Fig. 5 a. Pinnules of Fig. 5, magnified to show nervation. 

 Figs. 6-7. Cladophlebis auriculata, spec. nov. Page 50. 



Fig. 6. Normal form of the plant. 



Fig. 6a. Pinnule of Fig. 6, magnified to show nervation. 



Fig. 7. Abnormal form of the pinnules. 



PLATE XXVII. 



Figs. 1, la. Cladophlebis rotundiloba, spec. nov. Pages 52 to 53. 



Fig. 1. Portion of pinna. 



Fig. la. Pinnules of Fig. 1, magnified to show nervation. 

 Figs. 2, 2a. Cladophlebis microphylla, spec. nov. Pages 51 to 52. 



Fig. 2. Portion of the upper part of a compound pinna, or of the frond. 



Fig. 2 a. Pinnules of Fig. 2, magnified to show nervation. 

 Fig. 3. Cladophlebis ovata, spec. nov. Pages 50 to 51. Gives a portion of the lower part of a com- 

 pound pinna, or of the frond. 

 Figs. 4, 4a. Cladophlebis pseudowhilbiensis, spec. nov. Page 52. 



Fig. 4. Portion of a compound pinna, or of the frond. 



Fig. 4a. Pinnule of Fig. 4, magnified to show nervation. 



PLATE XXVIII. 



Figs. 1-2. Lonchopteris Tiryiniensis, spec. nov. Pages 53 to 54. 

 Fig. 1. Summit of a large compound pinna, or of the frond. 

 Fig. la. Pinnules of Fig. 1, magnified to show nervation. 

 Fig. 2. Portion of a pinna with long acute pinnules. 



PLATE XXIX. 



FIGS. 1-4. Lonchopteris VirginienAs, spec. nov. Pages 53 to 54. 

 FlG. 1. Portion of frond with normal, rounded pinnules. 

 Fig. la. Pinnule of Fig. 1, magnified to show nervation. 

 Fig. 2. Portions of pinnoB, with normal acute pinnules. 



