310 



CERATOPHYLLACE/E. 



Ceratophyllum, Linn. 



1. C. demersum, Linn. Dark Hornwort*. 



Bab. Man. 317,18. Hook. St. Fl. 378. H. & S. 74. Hist. Yarm. 

 Top. Bot. Stiff. E. and W. Galp. 103. 



Perennial aquatic ; in streams and ponds. June, July. 



1. Knettishall in Lit. Ouse || ; Ampton Lake : Barton, 

 Hb. Blk. : Woolpit, J. Rasor : Bury, E. Sk. 



2. Wiston|| ; Nayland. 



3. Benacre : Bungay, Stock: Homersfield, Galp. 



4. Lake in Kedgrave Park || : Pond between Wey- 

 bread and Wingfield, Blackett. 



Earliest notice 1835. D. Stock. 



2. C. Sllbmersum, Linn. Pale green Hormvort. 

 Bab. Man. 318. Hook. St. Fl. 379. H.&S. 75. Hist. Yarm. 

 Aquatic herbaceous perennial ; in ponds and streams. 



June, July. 



1. Lit. Ouse, Knettishall 1 1 ; Ampton Lake ; Honington ; 

 Ixworth ; Sapiston ; Mildenhall ; Barton Mills : Wang-ford, 

 Hb. Cas. & F.K.E. in Hb. Ly. 



2. Nayland : Hitcham, Hb. Hens. 



3. Bungay : Ditches at Gorleston, D. Turner : be- 

 tween Yarmouth and Gorleston, Sir J. E. Smith. 



4. Dunwich. 



Earliest notice 1804. Dawson Turner. 



CALLITRICHACE/E. 



Callitriche, Linn. 



1. C. verna, Linn. C. vernalis, Koch. 



Vernal Water Starwort. 



Bab. Man. 318. Hook. St. FL 152. H. & S. 75. Top. Bot. 

 Suff. E. and W. Galp. 68. 



Aquatic weed ; in ditches and pools ; doubtfully annual. 

 Common in all the districts. April to September. 



Earliest record 1773. Sir J. Cullum. 



2. C. Obtusangula, Le Gal. Blunt Water Starwort*. 

 Bab. Man. 318. Hook. St. Fl. 153. 



Aquatic weed ; in ditches ; doubtfully annual. 



