PIvANTS OF SOUTHERN NEW JERSEY. 213 



dd. Culms not tufted, bristles and tips of spikelets purplish. 

 Coast plant. C. i. versicolor, p. 213 



Chaetochloa imberbis R. & S. Native Fox-tail Grass. 



PI. XL, Fig. 5. 

 Setaria imberbis Roemer and Schultes, Syst. II. 891 [N. A. and Brazil]. 



Moist ground in the Middle district ; probably more common 

 than our collections would indicate, as it has been confused with 

 the introduced species C glanca and C. viridis, so common about 

 cultivated ground. It can be told at once by the creeping root- 

 stalk, being a perennial, while the others are annuals. 

 PL — Mid-July to late September. 

 Middle District. — Pemberton Jnc. (S), Delanco, Camden. 



Chaetochloa imberbis versicolor (Bicknell). Coast Fox-tail Grass. 



Chcetochloa versicolor Bicknell, Bull. Torr. Club. 25. Feb., 1898. p. 105 

 [Van Courtland Park, N. Y.]. 



Common along the edges of the salt marshes on the coast as 

 well as on the bay shore of Cape May at least as far as Dias 

 Creek. 



Fl. — Mid-July to late September. 



Maritime. — Seaside Park, Forked River, Manahawkin, Surf City (L), 

 Barnegat City (L), St. Albans (L)„ Peahala (L), Beach Haven Terrace (L), 

 Sherburn's (L), Beach Haven (L), Cedar Bonnet (L), Absecon (S), Atlan- 

 tic City, Ocean City, Palermo, Cape May Court House, Cape May, Dias Creek. 



Chaetochloa magna (Griseb.). Giant Fox-tail Grass. 



Setaria magna Grisebeck, Fl. Brit. W. Indies. 1861. 554 [Jamaica]. 



Found on the edge of the salt marshes near the Cape May 

 Point lighthouse, in September, 1891, by the writer, but not seen 

 there in recent years. Re-discovered September, 191 1. on the 

 ocean side of the peninsula, below Cold Spring, by Mr. O. H. 

 Brown. There is also a specimen in the Academy from the W. 

 Wynne Wister herbarium labeled "N. J. 1863." 



Fl. — Late July to late September or into October. 



Maritime.— WMwood (UP), Cape May Pt. (S), Near Cold Spring. 



CENCHRUS L. 



Key to the Species. 

 a. Bur-like involucres, 8 mm. thick, short, pubescent. C. carolinianus, p. 214 

 aa. Bur-like involucres, 12-14 mm- thick, densely long, pubescent. 



C. tribuloides, p. 214 



