CATALOGUE OF PLANTS. 221 
B. nigra, L. River Birch. Red Birch. 
Along rivers and lakes. Common throughout the State. 
Especially abundant along the Delaware and all its tributary 
streams. 
B. pumila, L. 
Swamps in the northern counties. Sussex: Newton—Garber ; 
common on Germany Flats and along the Wallkill between 
Ogdensburg and Sparta—Britton. Morris: Budd’s Lake— 
Porter. Warren: Swamp on Jenny Jump Mt., near Green’s 
Pond—Britton. 
ALNUS, L. 
Alder. 
A. incana (L.), Willd. 
Low grounds in the northern counties. Morris: Budd’s 
Lake—Porter. Sussex: Near Andover and at Culver’s Gap— 
Britton. 
A. serrulata, Willd. Candle Alder. 
In low grounds. Common throughout the State. 
A. @Lurinosa, Willd. 
Essex: A single tree, some thirty feet high, along the canal at 
Belleville—Rusby. Fugitive from Asia. 
CARPINUS, L. 
Hornbeam. Iron-wood. 
C. Caroliniana, Walt. (C. Americana, Michx.) 
River banks and in copses. Common throughout the State, 
except in the pine barrens. 
OSTRYA, Scop. 
Hop-Hornbeam. 
QO. Virginiana (Mill.), Willd. 
Along river banks, ete. Bergen: Closter—Austin; Palisades— 
Leggett. Sussex: Swartswood Lake—Britton. Warren: River 
hills from Phillipsburg southward—Porter. Hunterdon: Along 
the Delaware—Best.. Somerset: Along the Raritan at Roxiticus 
—Britton. 
