FLORA OF BURLINGTON AND VICINITY 35 



POLYGONACEAE. BUCKWHEAT FAMILY 



FAGOPYRUM (Tourn.) Hill. Buckwheat 

 F. ESCULENTUM Moench. Persisting after cultivation. June-Sept. 



POLYGOXELLA Michx. 



P. articiilata (L.) Meisn. Coast Jointweed. Sandy shore of Lake 

 Champlain: rare. Aug., Sept. Colchester. (Pringle. N. F. F.). 



POLYGONUM (Tourn.) L. Knotweed 



P. acre HBK.. var. leptostaclijuin Meisn. Water Smartweed. Wet 

 meadows; occasional. July-Sept. 



P. aiiiphibinm L. One form occurs. Var. Hartwrichtii (Gray) Bis- 

 sell. Wet places; rare. Aug., Sept. Burlington, (Jones, N. F. F.). 



P. arifolium L. Halberd-leaved Tear-thumb. Wet ground: occasional. 

 Aug., Sept. 



P. ariculare L. Knotgrass. Knotweed, Doorweed. Dooryards, waste 

 places, etc. ; common. June-Sept. 



P. ariculare L., var. yegetum Ledeb. Burlington, (Grout). July-Sept. 



P. cllinode Michx. Fringed Black Bindweed. Rocky copses; frequent. 

 July-Sept. 



P. Convolvulus L. Black Bindweed. Cultivated and waste ground; 

 common. June-Sept. 



P. cuspiDATUM Sieb. & Zucc. Japanese Knotweed. Adventive in gar- 

 den, Shelburne, (Mrs. Gebhardt). Aug., Sept. 



P. erectuin L. Erect Knotweed. Waysides, waste places, etc.; local. 

 July, Aug. South Burlington, (N. F. F.). 



P. Hydropiper L. Common Smartweed or Water Pepper. Moist places; 

 common. July-Sept. 



P. lapathifoliiim L. Dock-leaved or Pale Persicaria. Alluvial fields; 

 frequent. July-Sept. A stout form near var. nodosum (Pers.) 

 Weinm. occurs, Fort Ethan Allen, (N. F. F.). 



P. Muhleiibergii (Meisn.) Wats. Swamp Persicaria. Muddy or exsic- 

 cated places; occasional. Aug., Sept. 



P. ORIENTALE L. Prince's Feather. Persisting about gardens; occa- 

 sional. July-Sept. 



