426 REPORT OK NEW JERSEY STATE MUSEUM. 



Polygonum scandens L. Climbing Bindweed. 



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

 Polygonum dumetorum Knieskern 26. 

 Polygonum dumetorum var. scandens Britton 210. 



Common in swamps and thickets of the Northern and Middle 

 districts, also down the coast and at Cape Ma}^ 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 (L). 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 Xorthern, jMiddle and Coast dis- 

 tricts down to Cape May. 



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

 summer w^iich 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 

 perfoliatnm, and maculatum, Vernonia novehoracensis, several 

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

 the Pines. 



Fr. — Mid- August to mid-September. 



Middle District. — New Egj'pt, 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, FI. Bor. Am. L 241. 1803. — Knieskern 26. — Britton 210. 



Common in swamps of the Xorthern and Middle districts and 

 less commonlv in the Coast Strip and Cape ]\Iay peninsula. 

 Fr. — 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 May.— Court House (OHB), Green Creek (S). 



