54 



387. AcoEus, L. Sweet Flag. 

 A. Calamus, L. Common. 



LSMNAOE^. 



388. Lemna, L. Duckweed. 



L. trisulca, L. Borders of ponds. 

 L. minor, L. Still water. Common. 



389. Spieodella, Sch. 



S. polyrrhiza, Sch. {Leynna polyrrMza, L.) 



ALISMAOE^. 



390. SCHEUCHZEEIA, L. 



S. palustris, L. Bristol Bog, Pringle ; Snake Mountain Bog, 

 Brainerd, 



391. Alisma, Linn. 



A. plantagO, L. Water Plantain. Common. 



392. Sagittaeia, L. 



S. variabilis, Eugl. Very common. 



S. heterophylla. Mouth of Mississquoi River; Pringle. 



S. heterophylla, Pursh. Var. elliptica. Gray. Dead Creek, 

 Ferrisburgh. 



S. graminea, Mx. Mouth of Mississquoi Eiver, Pringle. 



S. natans, Mx. Brattleboro, Frost. (Doubtful.) 



S. lancifolia, L. Grows in Mallets Bay not far north of the 

 hotel, near the road to Colchester, Perkins. Not before re- 

 ported north of Virginia. 



NAIADAC M. 



393. Naias, L. 



N. flexilis, Rost. Sluggish streams and ponds. 



394. Zannichellia, Mich. 



Z. palustris, L. North Hero, Brainerd and Pringle ; Norwich, 

 Jessup ; Long Pond, Danville, Blanch ard. 



395. PoTAMOGETON, Tourn. 



P. natans, L. Ponds. Common. 



P. Pennsylvanicus, Cham. {P. Claytonii, Tuck.) Dead 



Creek, Ferrisburgh, Pringle and elsewhere. Common. 

 P. Vaseyi, Bobbin's. Barnet, Blanchard. Rare. 

 P. Spirillus, Tuck. Brattleboro, Frost. 

 P. hybridus, Mx. Lake Champlain, Windsor and Willoughby. 



Jessup. 



