134 BOTANICAL GAZETTE [February 



14. Pirotta, R., Sul genere Keteleeria di Carriere (Abies Fortunei Murr.). 

 Bull. Soc. Toscana Orlicultura 12:1-8. 1887. 



15. , Sulla struttura anatomica della Keteleeria Fortunei. Rend. 



R. Acad. Lincei 6:561-565. 1890. 



16. , Sulla germinazione e sulla struttura della piantina della Keteleeria 



Fortunei. Ann. R. Inst. Bot. Roma 6:31-34. 



17. Radais, Maxime, Anatomie comparee du fruit des Coniferes. Ann. Sci. 

 Nat. Bot. 14:165-368. 1S94. 



EXPLANATION OF PLATES VII AND VIII 



Figs. 1-5. — Male garnet ophyte; X1630. 



Fig. 1. — First polar cell and second primary mitosis. 



Figs. 2, 3. — Two polar cells, antheridial cell, and tube nucleus; in fig. 3 

 the wall which later cuts off the antheridial cell has not yet been formed; the 

 radiating fibers may be noted. 



Fig. 4. — Three nuclei have been crowded to the wall ("prothallial cells"); 

 tube nucleus is central. 



Fig. 5. — Four medianly placed nuclei, alike in size and structure. 



Figs. 6-8. — Sieve tubes with sieve plates; X1630. 



Fig. 6. — From a longitudinal radial section. 



Fig. 7. — From a longitudinal tangential section. 



Fig. 8. — From a transverse section, a cell from the pith ray being shown 

 also. 



Fig. o. — Megasporangium showing megaspore mother^cell. 



Figs. 10-14. — Cells from different regions of the embryo. 



Fig. 10. — Cells from meristem of cotyledon. 



Fig. 11. — Cells becoming differentiated to form mucilage tubes. 



Fig. 12. — A cortical cell. 



Fig. 13. — Cells from meristem of primary root. 



Fig. 14. — From protoxylem of cotyledonary tube. 



Figs. 15-27. — Semidiagrammatic drawings of the embryo; X40. 



Fig. 15. — Longitudinal median section; attached numbers indicate region 

 from which accompanying transverse sections have been taken. 



Figs. 16-27. — Transverse sections. 



Fig. 16. — Cotyledons. 



Figs. 17-20. — Cotyledonary tube, showing meristematic region and 

 protoxylem (black). 



Fig. 20. — Cotyledonary tube and leaf bud. 



Fig. 21. — Junction of hollow meristematic cylinder of primary root and 

 4 meristematic regions of cotyledonary tube. 



Figs. 22, 23. — Cortex, region of meristem, and central axis. 



Figs. 24, 25. — Showing 4 regions; coleorhiza, cortex, region of meristem, 

 and mucilage tubes; also central axis. 



Fig. 26. — Section of coleorhiza, cortex, and central axis. 



Fig. 27. — Section of coleorhiza and central axis. 



