426 REPORT OF NEW JERSEY STATE MUSEUM. 



Polygonum scandens L. Climbing Bindweed. 



Polygonum scandciis Linnjeus, Sp. PI. 364. 1753 [America]. 

 Polygonicni dumctormn Knieskern 26. 

 Polygonum dumctorum var. scandens Britton 210. 



Common in .swamps and thickets of the Northern and Middle 

 districts, also down the coast and at Cape May. This 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), Mickle- 

 ton. 



Coast Strip. — Forked River, Surf City (L), N. Beach Haven (Lr), Barrel 

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



Polygonum sagittatum L. Arrow-leaved Tear-thumb. 



Polygonum sagittatum Linnaeus, 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 si>ecies 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. 

 A!ssociated with these Tear-thumbs are usually found Bupatoruim 

 perfoliatiim, and maciilahim, Vernonia noveboracensis, several 

 species of Bidens, Aster puniceuis^ etc., all of them lacking from 

 the Pines. 



Fr. — 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. 



Fr. — Late Aug-ust to late September. 



Middle District.— l^ew Egypt, Birmingham, Kinkora (NY), Hartford, 

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

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



Coa.y^— Cox's, May Landing (T). 



Cape Mai-.— Court House (OHB), Green Creek (S). 



