PLATE XXII. 



PAGE 



Figs. 1-9. ScHiz.^opsis AMEEicATs-A Berry 216 



1. Type specimen from Fredericksburg, Virginia, showing frond with 



attached groups of sporangia (nat. size). 



2. Cast of cavity occupied by group of sporangia showing faint trans- 



verse lines which indicate the compound nature of these objects 

 shown in Fig. 1 (enlarged X 4). 



3. A fructification from Fig. 1, showing the continuation of the ped- 



uncular vein to the apex, indicating that these objects are not 

 large simple sporangia, but compound (enlarged X 4). 



4. Micro-photograph of a spore showing ornamentation and tetrad 



scar (enlarged X 365). 

 5-9. Camera lucida drawings of spores in various positions showing 

 ornamentation, tetrad scars and thick walls (enlarged X 380). 



521 



