6oo REPORT OF Xl-.W JERSEY STATE, MUSEUM. 



PL — Mid-July to nii(l-Auc,nist. Pr. — Late Sci)tcnil)cr into Oc- 

 tober. 



Middle District. — Crosswicks, Liiulcnwold (S), Micklclon, Swcdcsboro, 

 Fairton.. 



Cape A/av.— Bennett. Cold Spring (OHB). 



OXYPOLIS Rafinesque. 



Oxypolis rigidior (1-,.). Cowbane. 



5iMWi rigidius Linnaeus, Sp. PI. 251. 1753 [Virginia). 

 Ocnanthc rigidius Barton, Fl. Phila. I. 142. 1818. 

 Archcmora rigida Knieskern 16. 

 Ticdmannia rigida Britton 118. 



Common in swamps throughout the Middle, Coast and Cape 

 May districts north to Bergen, Middlesex and Mercer Counties; 

 rare in the Pine Barrens. 



PL — Mid-August to late September. Pr. — Mid-September to 

 late October. 



Middle District.— 'New Egypt, Burlington, Brown's Mills, Medford (S), 

 Ashland, Haddonficld, Camden, Tomlin, Swedesboro. 



Pine Barrens. — Landisville (T). 



Coast Strip. — Toms River, Forked River, Waretov^^n, Manahawkin, West 

 Creek, Coxe's, Barnegat, Barnegat City (L), Mouth of Batsto, Absecon (S), 

 Petersburg (S). 



Cape May.— Court House (S), Cold Spring (S), Green Creek (S). 



Oxypolis rigidior longifolia Pursh. Slender-leaved Cowbane. 



5'iMw longifoUum Pursh Fl. Am. Sept. 194. 1814 [New Jersey]. 

 Oenanthc ambigua Nuttall Gen. I. 190. 1818 [Banks of the Delaware near 

 Phila.].— Barton Fl. Phila. I. 143. 1818. 



Apparently restricted to swamps of the Pine Barrens. 



The distinguishing character of this form is the narrowness 

 of the leaf segments (rarely over 4-5 mm.) rather than in the 

 entire margin. They are in a majority of cases entire, it is true, 

 but even the narrowest are sometimes lobed, while plants with 

 leaf segments 18—20 mm. wide {rigidior) have them sometimes 

 entire. 



PL and Pr. — Aj^parently similar to the preceding. 



Middle District. — Tomlinson's. 



Pine Barrens. — Toms River (C), Bamber, Quaker Bridge (C), Speedwell 

 (S), Mo. of Batsto, West Creek, Absecon (S), Hammonton (C), Petersburg 

 (S), Mays Landing (S). Woodbine. 



