THE FLORA OF GUERNSEY. 131 



of VI.) consists of a high table-land attaining an elevation of 

 between 300 and 400 feet ; it is intersected by deep valleys, 

 and abuts on the sea in precipitous rocky cliffs. The north 

 and north-western portions lie low, scarcely rising above sea 

 level, and include more or less extensive sandy and marshy 

 tracts. Hence the vegetation differs considerably in the high 

 and low districts. There are no woods or copses in the island, 

 though trees are fairly plentiful. Streamlets are numerous, 

 but salt marshes and pools are now few and small. Grande 

 Mare is the last relic of what must have been once a large 

 expanse of marsh and bog ; at present it is little more than 

 an acre in extent, but from a botanist's point of view this is 

 perhaps the most interesting acre of ground in the island. 



The following fifteen plants are among the most note- 

 worthy in the Sarnian flora, since they do not occur in Britain 

 proper : — 



Brassica cheiranthus. Orchis laxiflora. 



Sinapis incana. Lagurus ovatus. 



Viola nana. Cynosurus echinatus. 



Silene quinquevulnera. Bronms maximus. 



Lavatera sylvestris. Gymnogramme leptophylla. 



Gnaphalium luteo- album. Ophioglossum lusitanicum. 



Centaurea aspera. Isoetes Hystrix. 

 Cicendia pusilla. 



My best thanks are due to Miss Dawber and to Mr. 

 G. Derrick for pointing out to me the habitats of several local 

 rarities ; and I am also indebted to my friends, Messrs. H. and 

 J. Groves, for kindly identifying my Guernsey gatherings of 

 characese. 



It may be well to mention in conclusion that as I am 

 collecting materials for the publication of a complete " Flora 

 of Guernsey," cryptogamic as well as phanerogamic, any 

 information bearing on the subject or any useful notes or 

 references will be most thankfully received by me, and care- 

 fully acknowledged in the proper place. 



Ranunculus triehophyllUS, Ghaix. Common iii pools about Grandes 

 Rocques and Cobo. 



R. peltatus, Schrank. In several pools on L'Ancresse Common (mostly the 

 var. truncalus). 



R. hederaceus, L. Rare. Noted in IT., V., IX. and X. 



R. Flammula, L. Common in wet places. Var. pseuclo-reptans. Old 

 quarry at L' Islet. 



R. acris, L. Very common. 



R. repens, L. Very common. 



R. bulDOSUS, L. Very common. 



