58 



[Senate 



Cannabis sativa, Linn. 

 Urtica dioica, Linn. 



— urens, Linn. 



— canadensis, Linn. 

 * — gracilis, Ait. 



(procera, Willd.) 

 Adike pumila, Raf. 



(Pilea pumila, Gray.) 

 Boehmeria cylindrica, Willd. 

 Parietaria pennsylvanica, Mukl. 



CONIFERiE. 

 tPinus resinosa, Soland. 



— rigida, Mill. 



— strobus, Linn. 

 t — mitis, Michx. 



— balsamea, Linn. 



— canadensis, Linn. 



— nigra, Ait. 



— pendula, Ait. 

 Thuya occidental is, Linn. 

 Cupressus thuyoides, Linn. 

 Juniperus communis, Linn. 



— virginiana, Linn. 

 Taxus canadensis, Willd. 



ARACEtE. 



Arisasma tripbyllum, Torr. 



{Arum triphyllum, Linn.) 



— dracontium, Schott. 

 Peltandra viroinica, Raf. 

 Calla palustris, Linn. 

 Symplocarpus foetid us, Salisb. 

 Orontium aquatieum, Linn. 

 Acarus calamus, Linn. 



LEMNACE^E. 

 Lemna minor, Linn. 



— perpusilla, Torr. 



— trisulca, Linn. 



— gibba, Linn. 



— polyrhiza, Linn. 



TYPHACE^. 



Typha latifolia, Linn. 



Typba angustifolia, Linn. 

 Sparganium ramosum, Huds. 



— simplex, Huds. 



var. angustifolium, Torr. 

 {S. angustifolium, Michx.) 



NAIADACE^E. 



Naias canadensis, Michx. 

 Zostera marina, Linn. 

 Ruppia maritima, Linn. 

 Zannichellia palustris, Linn. 

 Potamogeton natans, Linn, 

 var. fluitans, Torr. 

 {P.fluitans, Smith?) 



— heterophyllus, Schreb. 



— hybrid us, Michx. 



— lucens, Linn. 



— perfoliatus, Linn. 



— campressus, Linn, 

 {zostercsfolius, Schum.) 



— pusillus, Linn. 



— pauciflorus, Pursh. 



— pectinatus, Linn. 



ALISMACE^l. 

 Alisma plantago, Linn. 

 Sagittaria sagittifolia, Linn. 



— pusilla, Nutt. 

 (Echinodonis subalatus, Gray.) 



JUNCAGINACE^l. 



Triglochin palustre, Linn. 



— maritimum, Linn. 



— elatum, Nutt. 

 Scheuchzeria palustris, Linn. 



HYDROCHARIDACE^. 



Limnobium spongia, Richard. 



(Hydrocharis cord/folia, Nutt.) 

 Udora canadensis, Nutt. 

 Vallisneria canadensis, Linn. 



ORCHIDACE^. 



Microstylos monophyllos, Lindl. 



— ophioglossoides, Nutt. 



