LITERATURE CITED 



(1) De Candolle, Alphonso. 



1864. cupuliferae. Prodr. Syst. Univ. Veg. 16 2 : 1-123. 



(2) LlEBMANN, F. M. 



1869. chenes de l'amerique tropicale. Pp. 1-29, illus. 



(3) Muller, Cornelius H. 



1942. THE PROBLEM OF GENERA AND SUBGENERA IN THE OAKS. Chron. 



Bot. 7: 12-14. 



(4) ScHWARZ, 0. 



1936. ENTWURF ZU EINEN NATURLICHEN SYSTEM DER CUPULIFEREN UND 



der gattung quercus l. Notizbl. Bot. Garc. u. Mus. [Berlin- 

 Dalilem] 13: 1-22. 



(5) - 



1937. FAGACEAE [iN M. BURRET, PLANTAE DUQUEANAE]. Notizbl. Bot. 



Gait. u. Mus. [Berlin-Dahlem] 13: 495-496. 



(6) Trelease, W. 



1924. the American oaks. Natl. Acad. Sci. Mem. 20: 1-255, illus. 



(7) Wenzig, Th. 



1884. die eichenarten amerika's. Jahrb. K. Bot. Gart. u. Mus. 

 [Berlin] 3: 175-219. 



(8) Williams, Simon. 



1939. secondary vascular tissues of the oaks indigenous to the 



united states 1. the importance of secondary xylem in 



delimiting erythrobalanus and leucobalanus. torrev 

 Bot. Club Bui. 66: 353-365, illus. 



90 



