PLANTS OF SOUTHERN NEW JERSEY. 413 



Mainly restricted to the shores of large rivers or their tributaries, 

 or to low meadowland.* 



PI. — Late March to early April, before the leaves expand. Pr. 

 — Late April to mid-May, when the leaves are partly expanded. 



Middle Dwine*.— Farmingdale, Pt. Pleasant (S), Bordentown, Pemberton 

 Jnc. (S), Moorestown, Medford (S), Mickleton, Atco (C), Salem (C). 



CELTIS L. 



Celtis occidentaiis L>. Hackberry. 



Celtis occidentaiis Linnaeus, Sp. PI. 1044. 1753 [Virginia]. — Barton, Fl. 

 Phila. L 151. 1818. — Knieskern 27. — Willis 54.— Britton 216. 



Frequent in woods and thickets of the Middle, Coast and Cape 

 May districts, and occasional northward. Absent from the Pine 

 Barrens. 



The tree of the coast strip has rather small, practically glabrous, 

 leaves, and the same form occurs in the Middle district, but 

 there occur vdth it trees with very rough, usually larger, leaves, 

 and others with larger leaves which are nearly glabrous. The 

 length of both pedicels and petioles varies greatly. While I at 

 one time supposed that both C. georgiana and C. crassifolia oc- 

 curred in our region, I have found it imj|)ossible to separate 

 our material, the characters being so variable and occurring in 

 such different combinations, so it was thought best to record 

 all of themi under C. occidentaiis. 



PL — ^Late April to late May, when the leaves are expanding. 

 Pr. — Late August into early autumn. 



Middle District.— Leedsville, Mon. Co. (NB), Crosswicks, Fish House (S), 

 Camden, Merchantville, Oaklyn (S), Gloucester, Lawnside (S), Woodbury, 

 Salem (S). 



Coast Strip.— S&ndy Hook, Toms River (Kn), Bafnegat City (L), Surf 

 City (L), St. Albans (L), West Creek (S), Absecon (Bassett), Pleasant- 

 ville (NY), Piermont (S), Anglesea (UP). 



Cape Maji.— Goshen, Court House, Dias Creek (S). 



* Ulmus fulva Michx., a tree of the northern counties is said by Willis to 

 occur in Monmouth county, and Dii-. Britton gives it in his list from Clemen- 

 ton (H. A. Green). All Elms from the latter vicinity seem to be U. ameri- 

 cana, however, and we have seen no specimen of U. fulva from within our 

 limits 



