30 



PHYTOLACCACE^E. 

 Phytolacca, Tourn. decandra, L. Poke -weed. Gen. 



POLYGONACE^E. 



Polygonum, L. orientale, L. Knot-grass. Escaped frcm Gardens gen. 



amphibium, L. Knot-weed. Gen. 



nodosum, Pers. Gen. 



Pennsylvanicum, L. Penn. Knot-grass. Gen. 



persicaria, L. Spotted Knot-grass. Naturalized gen. 



hydropiper, L. Naturalized gen. 



hydropiperoides, Michx. Bird Polygonum. S. 



aviculare, L. Gen. 



tenue, Michx. Slender Knot-grass. Gen. 



Yirginianum, L. Gen. 



arifolium, L. Hastate Knot grass. Gen. 



sagittatum, L. Scratch-grass. Gen. 



convovulus, L. Knot Bind-weed. Gen. 



cilinode, Michx. Gen. 



dumetorum, L. Gen. 



ramosissimum, Michx. Lake Shore. 

 Fagopyrum, Tourn. esculentum, Mcench. Buckwheat. Introduced gen. 

 Rumex, L. verticillatus, L. Naked-spiked Dock. Gen. 



altissimus, Wood. Peach-leaved Dock. Gen. 



Hydrolapathum, Hudson. Gen. 



crispus, L. Yellow Dock. Introduced gen. 



obtusifolius, L. Broad-leaved Dock. Introduced gen. 



Acetosella, L. Field or Sheep Sorrel. Introduced Gen. 



LAURACE^E. 



Sassafras, Nees. officinale, Nees. Sassafras. Gen. 

 Benzoin, Nees. odoriferum, Nees. Spice Bush. Gen. 



THYMELACE^E. 

 Dirca, L. palustris, L. Moose Wood. Gen. 



EL^EAGNACE^E. 

 Shepherdia, Nutt. Canadensis, Nutt. Summit Co. 



SANTALACE^E. 

 Comandra, Nutt. umbellata, Nutt. Bastard Toad Flax Gen. 



LORANTHACE^E. 

 Phoradendron, Nutt. flavescens, Nutt. False Mistletoe. C. and S. 



SAURURACE^E. 



Saururus, L. cernuus, L. Lizzard's Tail. Gen. 



CERATOPHYLLACE^E. 



Ceratophyllum, L. demersum, L. Hornwort. Gen. 

 echinatum, Gray. Gen. 



