MONANDRIA— DIGYNIA. Callitriche. 11 



Long Water Star-wort. Pet. H. Br. t. 6./. 4 ; copied from Loesel. 



In clear pools and lakes. 



Near London. Petiver, whose specimens were seen by Ray. In 

 Clunie loch, Scotland. Mr. Arthur Bruce. 



Annual. June — October. 



The very accurate Dr. Wahlenberg's remarks, and specimens from 

 my late worthy correspondent Mr. Bruce, prove the distinctness 

 of this species. The leaves are more membranous and much 

 more minutely cellular, of a rich, deep, permanent green ; the 

 uppermost, according to Loesel, crowded and floating, but all 

 linear. Fl. according to Linn., united, not separated. Outer 

 edges of the seeds very thin and membranous. Mr. Bruce's plant 

 grew a foot belov*^ the surface. 



