426 REPORT OF NEW JERSEY STATE MUSEUM. 



Polygonum scandens L. Climbing Bindweed. 



Polygonum scandens Limijeus, Sp. PI. 364. 1753 [America]. 

 Polygonum dumetorum Knieskern 26. 

 Polygonum dumetorum var. scandens Britton 210. 



Cominon in swamps and thickets of the Northern and Middle 

 districts, also down the coast and at Cape May. Tliis seems to 

 be the only form of trailing bindweed found native in our region. 



Fr. — ^Late August to early October. 



Middle District.— New Egypt, Medford (S), Orchard (S), Springdale 

 (S), Haddonfield (S), Lawnside (S), below Washington Park (S), Mickie- 

 ton. 



Coast 5fn>.— Forked. River, Surf City (L), N. Beach Haven (L), Barrel 

 Island (L), Holly Beach, Cape May (OHB). 



Polygonum sagittatum L. Arrow-leaved Tear-thumb. 



Polygonum sagittatum Linnaaus, Sp. PI. 363. 1753 [Virginia and Maryland]. 

 — Knieskern 26. — Britton 210. 



Common in swamps of the Northern, Middle and Coast dis- 

 tricts down to Cape May. 



This species and the following are two of the plants of late 

 summer which give to the swamps of west Jersey a character 

 which at once contrasts them with the bogs of the Pine Barrens. 

 Associated with these Tear-thumbs are usually found Bupatorium 

 perfoliatum, and maculatum, Vernonia noveboracensis, several 

 species of Bidens, Aster punicews, etc., all of them lacking from 

 the Pines. 



Pr. — Mid-August to mid-September. ^ 



Middle District. — New Egypt, Delaire, Hartford, Birmingham, Lindenwold 

 (S), Medford (S), Albion, Willow Grove, Mickleton. 

 Coast Strip. — Waretown, Forked River, Manahawkin, Coxe's, Crowleytown. 

 Cape May. — Cold Spring. 



Polygonum arifolium L. Halberd-leaved Tear-thumb. 



Polygonum arifolium Linnaeus, Sp. PI. 364. 1753 [Virginia and Florida]. — 

 Michaux, Fl. Bor, Am. I. 241. 1803. — Knieskern 26. — Britton 210. 



Common in swamps of the Northern and Middle districts and 

 less commonly in the Coast Strip and Cape May peninsula. 

 Pr. — Late August to late September. 



Middle District.— New Egypt, Birmingham, Kinkora (NY), Hartford, 

 Pensauken (S), Fish House, Delair, Medford (S), Springdale (S), Oaklyn, 

 Kaighns Pt., Lindenwold (S), Center Square. 



Coast. — Cox's, May Landing (T). 



Cape Maj;.— Court House (ORE), Green Creek (S). 



