42 



THE VEGETATION OF SMALL ISLETS. 



list of the flora of Jethou, to which five species have been 

 added subsequently. The plants of Brechou, or He aux 

 Marchands, on the western side of Sark, were carefully 

 studied by Mr. Cecil Hurst in 1902, and a full catalogue 

 of them, together with much interesting information about 

 the island, was published in the Transactions of this Society 

 for that year. These three islands are of larger size than 

 any of those Ave are about to consider ; but for the purpose of 

 comparison it may be stated that the total number of flower- 

 ing plants and ferns recorded for each is as follows : — 



Brechou 199 species. 



Jethou 191 „ 



Lihou 99 „ 



Houmet Paradis r ^^ lls i s t ne central one of three islets which 

 lie almost in a line off the Yale coast, between 

 Bordeaux Harbour and Fort Doyle. It is situated about one-fifth of a 

 mile from the shore, and is accessible at half-tide by a slightly raised 

 natural causeway of shingle and pebbles. Although of sufficiently 

 large extent, for it measures roughly about 200 yards by 70, it does 

 not appear that Houmet Paradis was ever permanently inhabited ; 

 but at the eastern end there is an abandoned quarry of considerable 

 size, and on the opposite side of the islet there are still standing the 

 ruined walls of some building which probably served as a shelter for 

 the quarrymen. The vegetation, especially in the central portion, is 

 rich and luxuriant, and consists of an unusually large number of 

 species; so that it differs altogether from Lihou, a much larger but 

 less productive island off the western coast of Guernsey. The follow- 

 ing 107 plants comprise all the species I have been able to discover 

 during repeated visits to this extremely interesting islet. 

 Ranunculus acris. Lotus major. 



repens. hispidus. 

 Glaucium luteum. Vicia sativa. 



Fumaria confusa. angustifolia. 

 Cochlearia danica. Arthrolobium ebracteatum. 



Raphanus maritimus. Potentilla Tormentilla. 



Polygala vulgaris. Rubus csesius. 



Silene maritima. sp. 

 Lychnis diurna. Sedum anglicum. 



Sagina procumbens. Cotyledon umbilicus. 



ciliata. Crithmum maritimum. 



maritima. Daucus gummifer. 



Cerastium triviale. Lonicera Periclymenum. 



tetrandrum. Galium Aparine. 



Lepigonum rupestre. mollugo. 

 Hypericum humifusum. verum. 

 Geranium molle. Bellis perennis. 



Ulex Europceus. Achillea Millefolium. 



Trifolium pratense. Anthemis nobilis. 



arvense. Matricaria inodora. 



subterraneum. Senecio Jacobsea. 



repens. Carduus lanceolatus. 



procumbens. arvensis. 

 minus. Hypochceris radicata. 



Lotus corniculatus. Thrincia hirta. 



