122 PP. KEPOKT OF PROGRESS. FONTAIJ^E & WHITE. 



Pigs. 1. Nematophyllum angustum. A fragment of stem 



with several joints. 

 " 2. Two stems of the same apparently diverging 



from a point of junction. 

 " 3. A fragment of the same showing a whorl of 



leaves united at base into a ring. 

 '' 4. A fragment of the same showing apparent 



union at the base of the leaflets. 

 ** 4F: Enlarged leaflet of the same to show the 



stria tions. 

 " 5. A fragment of the same showing more or 



less union at the base of the leaflets. 

 " 6. An undetermined specimen. Apparently 



it is a portion of a flabellate leaf. 



Plate ill. 



Figs. 1-3. Sphenopteris acrocarpa, Spec. nov. 

 " 1. Sphenopteris acrocarpa, sterile plant. 



1", 1^. Enlarged pinnules to show nerves. 

 2, 3. Portions of fertile plant. 

 2". Fertile pinnules of the same enlarged. 

 " 2^. Fructiflcation of the same still more en- 



larged to show group of sori. 



Plate IV. 



Figs. 1-5. Sphenopteris acrocarjpa. 



" 1. Sphenopteris acrocarpa. Portion of sterile frond 



towards the summit. 



*' 1". Enlarged pinnule of the same to show the 



nerves and segments. 



" 2. Portion of the same xjlant from near the ex- 



tremity of a compound pinna. 



" 3. Portion of the plant from near the summit 



of the frond. 



'* 4. Portion of the same from towards the base 



of the frond. 



" 5. Portion of the plant from near the extremity 



of a compound pinna. 



*' 6". Pinnule of the same enlarged to show nerva- 



tion. 



u 

 u 

 u 



