594 



AUTHENTIC HISTORY 



hyhridum L. Safe Harbor. 

 botrys L. 

 ambrosioides L. 



ambrosioides L. Var. anthelminttcum, 

 Gr. (Wormseed.) Columbia. 

 Blitum Tourn. 

 capitaium L. (Strawberry Elite.) Es- 

 caped from cultivation. 



Amarantace^. 



Amaraxtus Tourn. 

 hypocliondriacus L. 

 paniculaius L. 

 retroflexus L. 



retroflexiis L. Var, chlorostachys, Gray, 

 albus L. 

 spinosus L. 



POLYGONACE^. 

 POLYGOMUM Z.l 



orientale L. (Prince's Feather.) 



pennsylvanicum L. 



incarnatum Ell. On the Susquehanna. 



persicaria L. 



liydropiper X. (Smartweed.) 



acre R. B. K. 



hydropiperoides Micltx. 



amphibium L. Var. aquaticum Willd. 



In the Susquehanna at Safe Harbor, 

 amphibium L. Var. terrestre, Willd. 

 virginianum L. 



aviculare L. Var. erectum, Both. 

 tQnwe Michx. Chesnut Hill; New Texas, 

 arifolium L. 



sagittatum L. (Tear Thumb.) 

 convolvulus L. (Wild Buckwheat.) 

 dumetorum L. Var. scandens Gray. 

 Fagopyrum Tourn. 

 esculentum Moencli. (Buckwheat.) 



RUMEX L. 



britannica X. (Pale Dock.) Safe Harbor. 

 crispus L. (Curled D.) 

 obtusifoUus L. (Bitter D.) 

 ucetosella L. (Sheep Sorrel.) 



Laurace^. 



Sassafras Nees. 



officinale Nees. 

 LiNDERA Tliunberg. 



\>en7.ova. Meisner. (Spice Bush.) 



Thymelace^. 



DiRCA L. 



palustris L. (Leatherwood.) Near Mt. 

 Joy, /. Stauffer. 



Santalace^, 



COMANDRA Nutt. 



umbellata Nutt. 



LOEANTHACE^. 



PnORADENDRON Nutt. 



flavescens Nutt. (Mistletoe.) On two 

 gum-trees near Martic Forge. 



Saururace^. 



Satjrurus L. 



cernuus L. (Lizard's Tail.) 



Ceratophyllace^. 



Ceratophyllum L. 



deroersum L. (Hornwort.) 



Callitrichace^e, 



Callitriche L. 

 verna L. 



EUPHORBIACE^. 



EnpnoRBiA L. 

 maculata L. 

 hypericifolia Z. 

 coroUata L. 

 dentata Michx. On the Conestoga near 



the railroad-bridge, E. DiffenbatigTi. 

 peplus L. Fruitville. 

 commutata, Engelm. Safe Harbor. 

 latJiyris L. (Mole Spurge.) 



ACALYPHA L. 



virginica L. 

 Phyllanthus L. 

 carolinensis Walt. On the Susquehanna. 



Urticaceje. 



Ulmus L. 



fulva Michx. (Slippery Elm.) 



araericana i. (White E.) 

 Celtis Toxirn. 



occidentalis L. (Hackberry.) 

 MoRUS Tourn. 



rubra L. 



alba L. Along roadsides. 

 TJrtica Tourn. 



gracilis Ait. 



dioica L. (Common Nettle. ) 

 Laportea Gaudichaud. 



canadensis, Gaudichaud. 



