356 GEOLOGICAL SURVEY OF NEW JERSEY. 
CLASS 4.—~CHARACEE. 
(Contributed by T. F. Allen, M.D.) 
NITELLA, Ag. 
N. flexilis, Ag. 
Ponds and streams ; common. 
N. glomulifera, A. Br. 
Morris: Green Pond, in deep water. 
N. mucronata, A. Br., forma tenuior, Allen. 
Morris: Green Pond; rare. 
N. tenuissima (Desv.), Kiitz. 
Morris and Sussex: In ponds; common. 
N. intermedia, Nordst. 
Sussex: Sparta Pond. Quite common in shallow water. 
N. microcarpa, A. Br. 
Morris: Morristown, a few specimens gathered in 1880. Not. 
since found. 
N. macrocarpa, Allen. 
Sussex: Morris Pond. 
N. gracilis, Sm. 
Sussex: Morris Pond. 
N. minuta, Allen. 
Sussex: Pond near Sparta. 
CHARA, L. 
C. coronata, A. Br. 
Quite common in ponds. 
C. Hydropitys, Reichenb., var. septentrionalis, Nordst. 
Sussex: Common in Panther Pond and Morris Pond. 
C. Brittonii, Allen. 
Sussex: In springy ground one mile west of Sparta—Britton. 
Cc. contraria, A. Br. 
In several ponds, northern counties. 
