70 Palmer Ferns of the Dismal Swamp, Virgi 



EXPLANATION OF PLATE I. 



FIGS. 1, 2, 3. Dryopteris goldieana celsa. First prothallinm fronds, enlarged 



about twice. 



FIG. 4. Second frond of same, natural size. 

 FIG. 5. Third frond of same, slightly enlarged. 

 FIG. 8. Fourth frond of same, reduced one-third. 



FIGS. 6, 9, 10, 11, 12. Lower basal pinnules of same, reduced one-third. 

 FIG. 13. Dryopteris goldieana goldieana. Lower basal pinnules, from poorly 



shaded frond, reduced one-third. 

 FIG. 14. The same, from an ordinary frond. 

 FIG. 7. Plants growing in moss on a dead cypress knee above "high- 



water mark. 

 FIGS. 1-5 were drawn from the fronds ; Figs. 6 and 8-14 from tracings of 



photographs, the fronds being used as negatives. 



