318 ARACEiE — LEMNACEiE. 



SPARGANIUM, Tournef. 



658. S. ramosum, Huds. Branched Bur-reed. 



Native ; in and about ditches, ponds, slow streams and rivers. 

 Common. June to. August, or later. 

 c. I. Seaton Valley. Sconner. Latchbrook, St. Stephens. Between 

 Landrake and Tideford. Killa. N otter Valley. 

 II. Banks of the Tamar, near Calstock ; Keys^ Fl. iii. 247. Pill, 

 near Saltash. Between St. Winnow and Millbrook. 

 p. III. Vale below Ford, Stoke Damerel. Warleigh Marsh. 



IV. Chelson Meadow ; Keys, ib. Shalaford, Egg Buckland. Plympton 



St. Mary. 

 V, Between Battisborough and Lolesbury. Near Bridgend. Between 

 Puslmch Bridge and Yealmpton, and elsewhere in the Yealm 

 Valley. Between Brixton and Plympton. 

 VI. Flete. Ivybridge. 



659. S. simplex, Huds. Unhranched Bur-reed. 



Native ; in and about slow streams or pools. Very rare. July 

 to September. 

 D. III. By the small stream from the Devonport leat on Roborough 

 Down ; also in the leat, near where it enters the plantation 

 from the down. 

 IV. By the Plyni at Riverford. In the canal between Longbridge 

 and Plymbridge. 



ARACE^. 



ARUM, L. 



660. A. maculatura, Huds. Comnrion Cuckoopint ; ^ Lords and 



Ladies.^ 

 Native ; on hedge-banks and in wooded or shady waste places. 

 Very common. April, May. Area general. 

 Grows close to Plymouth, and abounds in many of the old holloAv 

 lanes. The leaves are usually Avholly green, though the plant with 

 spotted leaves has been noted for all the Districts except v. The Oil 

 Beetle {Melo'e irroscarahceus) sometimes feeds on this plant. 



LEMNACE^. 



LEMNA, L. 

 661. L. minor, L. Lesser Duckweed. 



Native ; on the water of ponds, pools, and ditches. Very common. 

 Area general. 

 The only species of the genus growing about Plymouth. 



