352 Scientific Proceedings, Royal Dublin Society. 



EXPLANATION OF PLATES. 



Plate XIII. 



Figs. 



1-9. Branches of Sequoia Couttsiae fiom Washing Bay. 



1-5. Shoots with squamiform foliage. 



1-3 are magnified, (x 3.) 



6-9. Shoots showing aciciilar leaves, occasionally divaricating, (x 3.) 



10. Eesin tips of leaf, (x 80.) 



11. Stomata from squamiform leaf of S. Couttsiae. (x 240.) 



12. Stomata from acicular leaf of S.- Couttsiae. (x 240.) 



Plate XIV. 



1. The two types of foliage on the same shoot of S. Couttsiae. (Grainger 



Collection, Belfast Museum.) 



2. Type specimen of S. dii Noyeri Baily. ( Irish Geolog. Survey Collec- 



tions.) 



3. Photograph of Baily's restoration of specimen in fig. 2. 



4. Pollen mother-cell dividing. Sequoia ? 



5. Branch of S. Couttsiae with terminal buds. Male Howers ? (x 3.) 



6. Cone of S. Couttsiae. {\.) 



7. Scale of cone, with overlapping seeds attached, (x 8.) 



8. Shoot of Sequoia Couttsiae, sliowing foliage and exposed seeds, (x 3.) 



9. Isolated seed of S. Couttsiae, showing niicropole (ni) and hilum (h). 



10. Tracheides, showing bordered pits. 



11. Foliage of S. Couttsiae from Bovey Traeey. (York Museum.) (x 3.) 



12. Foliage of aS'. Couttsiae from Disco Islands, Greenland. (Botanical 



Collections, National Museum, Dublin.) (x 3.) 



13. Seed of /S. Couttsiae from Glenarm. (x 3.) 



