CHANNEL ISLANDS FLOUA. 187 



Echium plantagineum L., Lamium album L., L. Galeobdolon 



Cratitz, Staohys Betonioa L., Mentha alopecuroides Hull, Linaria 

 Pelisseriana Mill., Littorellalacustris L., Suocisa pratensis Moench., 

 Solidago Virgaurea L., Bidens cernua L., Diotis oandidissima 

 Desf., Petasites officinalis MiBuch., Cirsium angUcum Lobel, 

 Serratula tinctoria L., Hypoohseris maculata L., Hieracium 

 rigidum Hartm. 



>Iany of these are abundant and oharaoteristio Jersey species. 



The species peculiar to Guernsey are : Nitella transluoens Ag., 

 Chara baltica Bruz., Ophioglossum lusitauicum L., Botryohium 

 Lunaria L., Ruppia rosteUata Koch., Milium scabrum Merl., Poly- 

 pogon monspeliensis Desf., Lagurus ovatus L., Gynodon Dactylon 

 Pers., Bromus oommutatus Sohrad., Hordeum maritimum With., 

 Carex riparia Curt., Scirpus pauciflorus Lightf., Salicornia her- 

 bacea L., Suseda fruticosa Porsk., Chenopodium ficifolium Sm., 

 Polygonum maritimum L., Lepidium latifolium L., Potentilla 

 Comarum Nestl., Prunus instititia L., Lotus tenuis W. & K., 

 CaUitriohe truncata Guss., Pirola rotundifolia L., Statice Limonium 

 L., Cicendia pusilla Griseb., Lithospermum officinale L., Ajuga rep- 

 tans L., Teucrium Scordium L., Calamintha officinalis Mcench., 

 ^Mentha pubeseens "Willd., Verbascum virgatum "With., Utricularia 

 minor L., Aster TripoUum L., Seneoio aquations Huds., Carduus 

 crispus L. 



The species peculiar to Aldemey are : Equisetum maximum 

 Lam., Briza media L., Salix aurita L., Ranunculus Lingua L., 

 Cochlearia officinalis L., Rubus Idaeus L., Anthriscus sUvestris 

 Hoffiu., Statice lychnidifolia De Gir., Calamintha Cliuopodium 

 Spenn., Arctium nemorosum Lej., Tragopogon minor Pr. 



The species peculiar to Sark are : Lysimaohia nemorum L., and 

 Orobanche rubra Sm. 



It wiU be seen that the difference between the floras of the 

 various Islands is far greater than might have been expected. 

 The islands are probably aU of the same geological age. They are 

 aU excrescences upon the same submerged platform which projects 

 from the coast of France and fills up the angle between the coasts 

 of Normandy and Brittany. The geological features are the same 

 in all, the bulk of the islands consisting of crystalline and meta- 

 morphio rocks of great antiquity, overlaid in places with Quaternary 

 deposits of gravel and clay, with low-lying sandy tracts on portions 

 of the coasts. Limestone and chalk s^re entireljf absent, Th§ 



