138 OHIO BIOLOGICAL SUEVEY 



102. Potamogeton pectinatus L. Fennel-leaf Pondweed. General. 



103. Potamogeton interruptus Kit. Interrupted Pondweed. Erie 



County. 



104. Potamogeton robbinsii Oakes. Robbins' Pondweed. Erie, Sum- 



mit. 



105. Zanniehellia palustris L. Zannachellia. General. 



Naiadaceae. Naias Family. 



106. Naias flexilis (Willd.) Rost. & Schm. Slender Naias. General. 



107. Naias gracillima (A. Br.) Magnus. Thread-like Naias. Wayne 



County. 



Order, Nympliaeales. 



Nymphaeaceae. AVater-lily Family. 

 Subfamily, cabombatae. 



108. Brasenia schreberi Gmel. Water-shield. Geauga, Suunnit, Por- 



tage, Stark, Wayne. 

 Subfamily, nelumbonatae. 



109. Nelumbo lutea (Willd.) Pers. American Water-lotus. Licking, 



Perry, Erie, Auglaize. 



Subfamily, nymphaeatae. 



110. Nymphaea advena Sol. Large yellow Water-lily. General. 



111. Castalia odorata (Dry.) W. & W. Sweet-scented White Water- 



lily. Rather general. 



112. Castalia tuberosa (Paine) Greene. Tuberous White Water-lily. 



Erie, Holmes, Licking. 



Order, Hydrocharitales. 



Vallisneriaceae. Tape-grass Family. 



113. Philotria canadensis (Mx.) Britt. Common Water- weed. Gen- 



eral. 



114. Philotria minor (Eng.) Small. Lesser Water-weed. No speci- 



mens. 



115. Vallisneria spiralis L. Tape-grass. Shelby, Fairfield, Stark, 



Summit, Geauga, Erie. 



