fowler: LINCOLNSHIRE MARSH AND WATER PLANTS. 113 



Stachys palustris. 



Littorella lacustris. Scotton Common. 

 Polygonum amphibiurn. 



Rumex palustris. Frequent in South Lincoln, and about Wain- 

 fleet. 



Rumex Hydrolapathum. 



Rumex maximus Schr. (Beeby). River Welland. 

 Alnus glutinosa. 



Salix fragilis, S. alba, S. triandra, S. purpurea, S. viminalis, 



S. Smithiana, S. cinerea, and S. Capraea. 

 Ceratophyllum demersum. Brick ponds near Brigg. 

 Elodea canadensis. 



Hydrocharis Morsus-ranse. Plentiful about Saltfleetby. 

 Stratiotes aloides. Plentiful in the ditches on the east coast. 

 Iris Pseudacorus. 



Juncus effusus, J. conglomeratus, J. glaucus, J. supinus, 



J. lamprocarpus. 

 Juncus obtusiflorus. Far less common than the foregoing. 

 Typha latifolia and T. angustifolia. 

 Sparganium ramosum and S. simplex. 



Sparganium minimum. Ditches near Nocton Delph, and New 

 Idle river, in the Isle of Axholme; Scotter Common. 



Acorus Calamus. Not seen by me, but reported by Mr. Mason 

 of Alford, as growing in that neighbourhood. 



Lemna trisulca, L. minor, L. gibba, L. polyrrhiza. 



Alisma Plantago. 



Sagittaria sagittifolia. 



Butomus umbellatus. Not very common. 



Triglochin palustre. 



Potamogeton natans, P. polygonifolius, P. lucens, P. 

 perfoliatus, P. crispus, P. densus, P. pectinatus, with 

 var. scoparius. 



Potamogeton rufescens. Saltfleetby. 



Potamogeton plantagineus. Barnetby (Lees). 



Potamogeton heterophyllus. Double rivers, Isle of Axholme. 

 \ Potamogeton obtusifolius. River Ancholme (Lees). 



Potamogeton flabellatus Bab. Pools near the Wash. 

 Si Zannichellia palustris (as segregate). New Idle River, 

 f Zannichellia pedicillata Fr. Littleworth (Beeby). 



April 1888. 



