_Polygonatum canaliculatum_ (Muhl.) Pursh solomonseal _Potamogeton_ L. pondweed _diversifolius_ Raf. waterthread p. _foliosus_ Raf. leafy p. _illinoensis_ Morong (_P. lucens_ of manuals, not L.) Illinois p. _nodosus_ Poir. (_P. americanus_ C. & S.) longleaf p. _obtusifolius_ Mert. & Koch bluntleaf p. _pectinatus_ L. fennelleaf p. _pusillus_ L. baby p. _Ruppia maritima_ L. widgeongrass _Sagittaria_ L. arrowhead _ambigua_ J. G. Sm. Kansas a. _brevirostra_ Mackenz. & Bush shortbeak a. _cuneata_ Sheldon duckpotato a. _latifolia_ Willd. (including _S. esculenta_ Howell) common a. _longiloba_ Engelm. longbarb a. _Sisyrinchium_ L. blue-eyedgrass _angustifolium_ Mill. (including _S. graminoides_ Bickn.) common b. _campestre_ Bickn. prairie b. _Smilacina_ Desf. solomonplume _racemosa_ (L.) Desf. feather s. _stellata_ (L.) Desf. starry s. _Smilax_ L. greenbriar _lasioneura_ Hook. (included in _S. herbacea_ L. in some manuals) _tamnoides._ L. var. _hispida_ (Muhl.) Fern. (_S. hispida_ Muhl.) bristly g. _Sparganium eurycarpum_ Engelm. giant burreed _Spiranthes_ Richard ladiestresses _cernua_ (L.) Richard nodding l. _vernalis_ Engelm. & Gray upland l. _Spirodela polyrhiza_ (L.) Schleid. common ducksmeat _Tradescantia_ L. spiderwort _bracteata_ Small bracted s. _occidentalis_ (Britt.) Smyth prairie s. _ohiensis_ Raf. (_T. canaliculata_ Raf.) _tharpii_ Anders. & Woodson tharp s. _Typha_ L. cattail _angustifolia_ L. narrowleaf c. _latifolia_ L. common c. _Wolffia columbiana_ Karst. wolffia _Yucca glauca_ Nutt. small soapweed _Zannichellia palustris_ L. common poolmat _Zygadenus nuttallii_ Gray (also spelled _Zigadenus_) nuttall deathcamas FOOTNOTES: [38] _C. scilloides_ in Gray’s 8th Ed.: _C. scillioides_ in some manuals. =LEGUMES (including woody species)=