PLATE LXXVIII. 



PAGE 



Figs. 1-7. Sequoia ambigua Heer 449 



1. Cone-bearing twig from Dutch Gap, Virginia. 



2. Cast of cone from Soper Hall, Maryland (after Fontaine). 



3. 4. Casts of cones from Muirkirk, Maryland (after Fontaine). 



5. End view of cone-scale from Muirkirk. X 2%. 



6. Dorsal view of same. X 2^/2. 



7. Side view of same. X 2i/4. 



Fig. 8. Sequoia eigida Heer 447 



Leafy twig from Dutch Gap, Virginia. 



577 



