PLANTS OF SOUTHERN NEW JERSEY. 529 



Pine Barrens. — Farmingdale, Toms River, Forked River, Waretovi^n, Daven- 

 port, East and west Plains, Head of Batsto (S), Browns Mills, Folsom, Ham- 

 monton (Bassett), Pancoast (NB) Mays Landing (NB), Newfield (S), 

 Ocean City Jnc, Palermo. 



Cape May.— Cold Spring (OHB). 



Euphorbia arundelana Bartlett. Bartlett's Spurge. 



Buphorhia arundelana Bartlett, Rhodora XIII. 164. 191 1 [Laurel, Ann 

 Arundel Co., Md.]. 



A Specimen collected by Mr. Chas. D. Lippincott at Swedes- 



boro, N. J., May 27th, 1894, is obviously referable to this recently 



described species. 



Middle District. — Swedesboro. 



Euphorbia darlingtonii Gray. Darlington's Spurge. =^= 



Euphorbia Darlingtonii Gray, Man. 404. 1848 [Chester Co., Pa-]. — Keller 

 and Brown 213. 



Very rare in woods in the lower Middle district. Unknown 

 in the State until collected near Woodstown, June 15, 1895, by 

 Mr. Charles D. Lipi>incott. 



Mature fruit June 15. 

 Middle District. — ^Woodstown. 



Family CALUTRICHACE^. Water-starworts. 

 Key to the Species. 



a. Fruit short-peduncled, bracts wanting, terrestrial. C. austini, p. 529 



aa. Fruit sessile, aquatic or with terrestrial forms gowing on mud, bracts 

 present. 



h. Fruit oval, longer than the styles. C. palustris 



bb. Fruit obovate, shorter than the styles. C. heterophylla, p. 530 



The flowers are very smiall and inconspicuous, consisting- of 



a single stamen or pistil. They begin to bloomi in late spring. 



Taxonomic characters are based on the fruit. 



CALLITRICHE L. 



Callitriche austini Engelm. Austin's Water Starwort. 



Callitriclie Austini Engelmann, Gray's Man. Ed. V. 428. 1867 [New Jersey]. 

 — Britton 106. 



Damp shady soil at several stations in the northern counties 



and Middle district ; rare and local. 



* Named for its discoverer, William Darlington (1782-1863), of West 

 Chester, Pa., author of the classic Flora Cestrica. 



34 MUS 



