CATALOGUE OF PLANTS. 259 
Britton. Monmouth :—Torrey in Willis Catalogue. Hunter- 
don: In the Delaware River—Schuh. 
. Robbinsii, Oakes. 
Sussex: Swartswood Lake—Porter; Morris: Pond—Britton. 
Bergen: Hackensack River—Austin. Morris: Budd’s Lake 
—Porter. 
RUPPIA, L. 
aes Ditch-grass. 
. maritima, L. 
In shallow brackish water along the coast; frequent. 
ZANNICHBLLIA, L. 
Horned Pond-weed. 
. palustris, L., var. pedunculata, Gray. 
Bergen: In ditches—Austin. 
ZOSTHRA, L. 
5 Eel-grass. 
. marina, L. 
Common in salt water along the coast. 
NATAS, L.° 
oa, Naiad. 
. flexilis, Rostk. 
. In ponds. Frequent, especially in the northern counties. 
- Indica, Cham., var. gracillima, A. Br. 
Salem: In the pond at Woodstown, 1881—Commons. 
ERIOCAULEZ. 
ERIOCAULON, L. 
Pipewort. 
. Gecangulare, L. 
In pine-barren swamps; frequent or occasional. 
. gnaphalodes, Michx. 
In pine-barren swamps; common. 
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