326 REPORT Ol- XIvW JERSEY STATE MUSEUM. 



I'crliaps native aloiii;- the upper Delaware in the Middle dis- 

 trict, but for the most part, if not entirely, an escape from 

 cultivation. 



Fl. — ^Late May to mid-June. 



Middle District. — New Egypt, Borclcntown (C), Swcdesboro (C), Salem 

 (C). 



COMMELINA L. 

 Commelina communis L. Common Spiderwort. 



Comniclina communis Linn.x'us, Sp. PI. I. 40. 1753 [America]. 



Frequent in the Xorthern and Middle districts, and locally on 

 the coast; largely if not entirely introduced as a weed. 



All alleged records of C. virginica from om* district prove to 

 be this. 



Fl. — Early August to late September. 



Middle District. — Beverly (C), Kinkora (NY), Fish House, Merchantville 

 (C), Moorestown (C), Kaighns Pt, Haddonfield (S), Oaklyn (S), Lawn- 

 side (S), Woodbury (C), Pennsgrove (C). 



Coast 5m>.— Beach Haven (L), Atlantic City (NB), Pleasantville (NY). 



Commelina hirtella Vahl. 



Commelina hirtella Vahl., Enumerat. 2. 166. 1806 [new name for C. longi- 

 folia Mich., nee Lam. — Virginia]. 



Very rare in the Middle district. Collected by Chas. E. Smith 

 at Kaighns Point many years ago. 

 Middle District. — Kaighns Pt. 



Family PONTEDERIACE.^. Pickerel W^eeds. etc. 



Several water plants of very dissimilar general appearance 

 belong here. They all agree in having six-parted flowers, which 

 grow singly or several to many together in a sheath or spathe, 

 which is leaf-like, often covering only the base of the spike. 



Onlv the Pickerel Weed enters the Pine Barrens. 



Key to the Species. 



a. Leaves ovate, cordate sagittate, flowers in an exposed spike, blue. 



Pontederia, p. i2~ 

 aa. Leaves uniform, flowers inconspicuous, whitish or bluish. 



HeterantJiera reniformis, p. 327 

 aaa. Leaves floating, grass-like ; flowers star-like, 3^ellow. H. dubia, p. 327 



