84 PROCEEDINGS OF TUK 



tlie imperfect materials would not justify our asserting this with- 

 out gi'eat reserve. Three of the species are no longer members 

 of our indigenous flora, though they still persist, like the beaver 

 among the animals, in other lands. 



I'ifiy-three species of plants have been found in the Cromer 

 beds, and all, except two, belong to the Germanic type of our 

 Flora. Of these, six are now confined in Britain as indigenous 

 plants to England, viz. : — 



Stellaria aquatica, Sci'2j. 

 Pcucedanuin palustre, Moench. 

 Cornus sauguinea, Linn. 

 Riimex maritimus, Linn. 

 Euphorbia amygdaloides, Lhin, 

 Fagus sylyatica, Limi. 



Thirteen species found in England extend also into Scotland, 

 though tliey do not I'each the extreme north. They are : — 



Thalictrum flavuni, Linn. 

 Poterium oflicinale, Hook. ,/'. 

 (Enaiitbe Lachenalii, C. Gmcl. 

 Bidens ti-ipurtita, Linn. 

 Lycopus curop;viis, Linn. 

 Oeratophylluin dcmersum, Liiin. 

 Salix cinerea, Linn. 

 Alisma Plantago, Linn. 

 Potamogeton luceus, Linn. 



pra-longiis, Wulf. 



Eleocbaris pauciflora, Link. 

 Carex paludosa, Guod. 

 Taxus baecata, Linn. 



Thirty species from the Cromer Forest-bed are now found 

 scattered over the whole of Britain. These are : — 



Thalictrum minus, Linn. Corylus Avcllana, Linn. 



Ranunculus aquatilis, Lini. 



repeus, Linn. 



Pi-inuis communis, Hufh, 

 Rubus fruticosus, Lin)i. 

 liip))uris vulgaris, Linn. 

 Myriopliyllum spicatum, Linn. 

 Meiiyantlics trilbliata, Linn. 

 MyosoLis liugulata, Lclim. 

 Stachys palustris, Linn. 

 Rumex crispus, lAnn. 



Acetosella, Linn. 



Atrijjlcx patula, Linn. 

 SuiTijda maritima, Buniort. 

 Quercus Robur, Linn. 



Betula alba, Linn. 

 Aluus gluliuosa, Linn, 

 Potamogeton heteropbyllus, Schrch. 



■ ■ tricboides, Cham. 



pectinatus, Lin)i. 



Zannicbcllia palustris, Linn. 

 Spargauium ramosum, Huds. 

 Scirpus lacustris, Linn. 

 Isolepis fluitans, 11. Br. 

 Eleocbaris caspitosa. Link. 

 Eriopborium augustifolium, lioth. 

 Pbragmites communis, Trin. 

 Pinus sylvestris, Linn. 

 Osmunda regalis, Linn. 



In addition to the species 1 have enumerated, we find among 

 these earliest representatives of our indigenous flora two plants 

 which have been lost to us, l)aving been driven from our island 

 before the advancing cold, and having failed to return when the 

 ice retreated. The one is Trapa natans, Linn., and the other 

 Pinus Abies, Linn., still widely distributed on the continent. 

 Two other species complete the list of the hitherto discovered 



