52 CATALOGUE OF PLANTS. 



Zannichellia, Micheli. (Homed Pondweed.) 



Z. palustris, L. Sluggish waters, not common. 



Zostera, L. (Grass- wrack — Eel-grass.) 



Z. marina, L. Barnegat bay, Squan and Shark rivers. 



Ruppia, L. (Ditch-grass.) 



R. maritima, L. Tom's River, in four feet water, rare. (Knieskem.) 



Potamogeton, Tourn. (Pondweed.) 



P. natans, L. Shallow water, not rare. 



P. Clavtonii, Tuckerman, Gently flowing streams, common. 



P. kybridus, Michx. Still waters, common. 



P. pulcher, Tuckerman. Tom's River. (Porter.) Also Atlantic City. 

 (Canity.) 



P. lucens, L. Upper part of M., not common. 



P. perfoliatus, L. M. and Mer. (Dr. Torrey.) 



P. pauciflorus, Pursh. Slow running streams, not rare. 



P. Tuckermani, Bobbins. Atsion, Camden. (Canby.) 



P. pectinatus, L. M. (Dr. Torrey) 



P. Robbinsii, Oakes. Budd's Lake. (Porter.) 



Order 111. ALISMACE^E. Water-Plantain Family. 



Triglochin, L. (Arrow-grass.) 



T. maritimum, L. Wet grounds, M., not common. 



Scheuchzeria, L. (ScheuchZeria.) 



S. palustris, L. Budd's Lake, Mor. (Porter.) 



Alisma, L. (Water-Plantain.) 



A. Plantago, L. Along Stony Brook, near Princeton, common. 



Sagittaria, L. (Arrow-head.) 



S. variabilis, Engelm. Wet places, ponds, etc., common. Leaves 

 vary from 3 in. to { an inch in width. 



S. heterophylla, Pursh. Camden, frequent. (Canby) 



Order 112. HYDROCHARIDACEiE. Frog's-bit Family. 

 Limnobium, Richard. (American Frog's-bit.) 



L. Spongia, Richard. Swimming River, M., rare. 



Anacharis, Richard. (Water- weed.) 



A. Canadensis, Planchon. Sluggish streams, common. 



Vallisneria, Micheli (Tape-grass— Eel-grass.) 

 V. spiralis. L. Slow rivers, not rare. 



