78 



Origin of the British Flora. 



Potamogeton pusillus. 



trichoides. 



pectinatus. 



Scirpus pauciflorus. 

 setaceus. 



Scirpus iacustris. 

 Blysmus rufus. 

 Carex incurva (?) 

 Chara. 



D. — Lignite with Temperate plants. 



Ranunculus aquatilis. 



sceleratus. 



Lingua. 



cf. repens. 



Montia fontana. 

 Rhamnus Frangula. 

 Rubus Idaeus. 

 Rosa canina. 

 Pyrus torminalis (?). 

 CEnanthe Phellandrium. 

 Sambucus nigra. 

 Eupatorium cannabinum. 

 Bidens tripartita. 



var. with 



four equal awns. 

 Mentha aquatica. 

 Lycopus europaeus. 

 Stachys (?). 

 Rumex maritimus. 



Rumex Acetosella (?). 

 Urtica dioica (?). 

 Alnus glutinosa. 

 Carpinus Betulus. 

 Corylus Avellana. 

 Ceratophyllum demersum. 

 Taxus baccata. 

 Sparganium ramosum. 

 Alisma Plantago. 

 Potamogeton pusillus. 



trichoides. 



Eleocharis acicularis. 

 Scirpus pauciflorus. 



setaceus 



Iacustris 



Blysmus rufus. 

 Eriophorum angustifolium. 

 Carex distans (?). 

 ampullacea (?). 



cnspus. 



E. — Clay with freshwater shells, fish-bones, and Temperate 

 plants. 



Ranunculus Lingua. Ceratophyllum demersum. 



repens. Sparganium ramosum. 



Rubus Idaeus. Potamogeton trichoides. 



Hippuris vulgaris. Zannichellia palustris. 



Rumex maritimus. Scirpus Iacustris. 



Alnus glutinosa. Carex. 



As beds D and E, containing a temperate flora, lie 

 above the Glacial deposits and below loam with Arctic 

 plants, they are classed as Interglacial. Bed C, containing 

 Arctic plants, is newer than the boulder-clays of Suffolk, 

 and is therefore called Late Glacial. 



