530 REPORT OF NEW JERSEY STATE MUSEUM. 



Pruit — Well developed June 15, 1895 — ■Riddleton. 

 Middle District. — Riddleton. 



Callitriche heterophylla Pursh. Larger Water Starwort. 



Callitriche heterophylla Pursh, Fl. Am. Sept. 3. 1814 [N. America].— Barton, 

 Fl. Phila. I. 2. 1818.— Britten 106. 



In Streams and ponds;, frequent in the Northern and Middle 

 districts. 



Variable in formi and habit. Specimens fromi our range that 

 have been referred to C. palustris prove to be this, so far as I 

 have been able to examine them. 



Pruit — Well developed, but not necessarily mature; late May 



into October. 



Middle District.— ^armingdale, New Egypt, Delanco, Swedesboro, Clemen- 

 ton (S), Pitman, Riddleton. 



Order SAPINDALES. 



Family EMIPETRACE^. Crowberries. 



COREMA Don. 



Corema conradii (Torr.). Conrad's Crowberry. 



PI. LXXIX. 



Empetrum Conradii Torrey, Ann. Lye. N. Y. IV. 83- 1837 [Pine Barrens, 

 near Cedar Bridge, Monmouth Co., N. J., also Pemberton Mills, 10 miles 

 from Burlington, N. J.]. 



Corema Conradii Willis 54. — Britton 228. — Keller and Brown 214. — Redfield, 

 Proc. A. N. S. Phila. 1869, 91-92.— do.— Redfield, Bull. Torr. Bot Club, 

 1884, 97.— do. 1889, 193-195.- Britton, Bull. Torr. Club, 1884, 117.— do. 

 1889, 195.- Saunders, Proc. A. N. S. Phila. 1900, 544. — Stone, Bartonia 

 1910, 26. 



At several stations on the Plains or their borders in Ocean 

 and Burlington Counties, also formerly at Pemlberton, where 

 it is now apparently extinct. 



This interesting plant, which here reaches the southern limit 

 of its range,* has attracted more attention among botanists than 

 any other member of the Pine Barren flora, unless it be Schhcea 

 pusilla. It is an inhabitant of those desolate stretches of white 

 sand barrens which cover the most elevated portion of the Pine 



♦Prof. Fernald (Rhodora, 191 1, p. 139) regards it as a Coastal Plain plant, 

 pushing north to Newfoundland. I have always looked upon it as a northern 

 species ranging south to New Jersey ! 



