Quercvs FAGACEAE— URTICACEAE Celtis 



Q. marilandica Muench. Black Jack Oak. 



Frequent on the Coastal Plain, in dry, sterile soil; rare in the 

 Piedmont: rocky woods w. n. w. of Rock Springs (Ce), Long, 32199, 

 in 1925 (A); rocky woods below Bald Friar (Ce), Long, 42985, in 

 1934 (A). Fl., early May. 



Q. imbricaria Mx. Shingle Oak. 



Rare, in New Castle County: "near Wilmington," Commons in 

 1863 (U); a tree in margin of woods, along road from Stanton to 

 Christiana, }/^ mi. s. of Stanton Station, is tentatively referred to 

 this species. 



Q. Phellos L. Willow Oak. 



Common throughout the Coastal Plain, preferring wet, sandy 

 soil; occasional in the Piedmont. FL, early May. 



X Q. subfalcata Trel. ("Q Otisii" Sarg. A hybrid, probably of 

 Q. Phellos and Q. falcata.) 



A single tree: corner of woods along the highway, and just inside 

 the fence, 34 mi. w. of Wilson Station (NC), (A, T). 



X Q. heterophylla Mx. f. (Probably a hybrid, with Q. Phellos as 

 one parent. See Sargent: Man. Trees of N. A.) 



Frequent on or near the Fall Line in New Castle County; 

 occasional southward to Worcester County. 



URTICACEAE (Nettle Family) 



Ulmus L. Elm. 



U. rubra Muhl. {U. fulva Mx. Fernald: Rhodora 47, 203-204. 

 1945.) Slippery Elm. 



Common along streams and on rocky hillsides of the Piedmont; 

 apparently rare on the Coastal Plain: along King's Creek, n. e. of 

 Easton (Ta), Earle, 1394, 9 May 1937 (P); 4 mi. n. e. of Trappe 

 (Ta), Earle, 2780, 6 July 1940 (P). Fl. late April. 



U. americana L. White Elm. 



Frequent in both Piedmont and Coastal Plain provinces. Fl. 

 late March, early April. 



Celtis L. Hackberry. 

 y y^ C. occidentalis L. 



Frequent in the Piedmont of New Castle and Cecil Counties; 



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