PLANTS OF SOUTHERN NEW JERSEY. 427 



POLYGONELLA Michaux. 

 Polygonella articulata (L.)- Jointweed. 



Polygonum articulatum Linnaeus, Sp. PI. 363. 1753 [Canada]. — Muhlenberg 

 Cat. 40. 1813.— Pursh, Fl. Am. Sept. I. 272. 1814-— Barton, Fl. Phila. 

 189. 1818. — Knieskern 26. — Willis 52. — Britton 210. 



Polygonella articulata Keller and Brown 132. 



Frequent in dr}^ sandy soil throughout our area and only 

 occurring north of it at one locality in Middlesex Co. 



This is a striking plant of autumn in dry ground, especially 

 along the coast and in the Pines. The leaves are so inconspicuous 

 that the plant seems to consist entirely of slender racenes of little 

 white flowers supported on wiry stems. 



Fl. — Early September well through October. Fr. — Develops 

 almost immediately. 



Middle District. — New Egypt, Hainesport, Medford, Locust Grove (S), 

 Springdale (S), Lindenwold, Ashland, Camden, Center Square, below Wash- 

 ington Park (S), Woodbury, Mickleton, Swedesboro. 



Pine Barrens. — 'Whitings (S), Chatsworth, Clementon, Taunton (S), 

 Kenilworth (S), Cedar Brook, Jones Mill (S), Batsto, Pleasant Mills, north 

 of Batsto, Berlin (S), Albion, Buena Vista, May's Landing. 



Coast Strip. — Sandy Hook, Island Heights, Seaside Park (S), Forked 

 River, Manahawkin, Surf City (L), Spray Beach (L), Atlantic City, Ocean 

 City (S), Anglesea (UP). 



Cape May. — Cape May. 



Order CHENOPODIALES. 



Family CHENOPODIACE.E. Goosefoot, etc. 

 Key to the Species. 



a. Embryo coiled in a ring about the albumen, leaves flat, not spiny. 

 b. Stem not jointed. 



c. Flowers perfect or some pistillate. 



d. Fruiting calyx not winged, flowers in panicled spikes. 

 e. Leaves whitish, mealy on the under surface. 

 f. Some at least sinuate-toothed or lobed. 



[Chenopodium albiun]* 

 ff. Entire, linear or oblong. C. leptophyllnv.u p. 428 



ee. Leaves green on both sides. 

 f. Not glandular or aromatic. 



g. Stamens 5. calyx not fleshy. C. bosciamun. p. 429 

 gg. Stamens 1-2, calyx somewhat fleshy, red. 



C. rubrnm, p. 429 



* C. album. Pigweed, and C. aiiibrosioides, are common about barnyards and 

 other waste places. 



