ADDITIONS TO THE SAEK FLORA. 167 



Sark, there being one bush near the Seigneurie. R. micrantha 

 is the form which was supposed to be the speciality of Sark, 

 but Mr. E. Marquand has noted a specimen in Fermain Bay 

 lane. R. canina, v. dumalis, occurs in three or four localities, 

 and R. spinosissima is frequent in every furze brake. It is 

 remarkable that in Guernsey this plant should be confined to 

 the lowlands, the neighbourhood of Grand Havre and l'An- 

 cresse, while in Sark it abounds in furze brakes all over the 

 plateau. 



Our more complete knowledge of the subject justifies the 

 statement that the flora of Great and Little Sark are practi- 

 cally identical. There is only one plant found in Little Sark 

 which has not yet been found in the larger portion ; but seve- 

 ral in our list do not occur in Little Sark, and are not likely 

 to occur for want of suitable localities, while many introduced 

 plants have not yet crossed the Coupee. So, too, its similarity 

 to the Guernsey flora is maintained, R. systyla being the only 

 new distinguishing plant. Schleranthus annum is the only 

 species which points to a former Jersey connection. It is 

 fairly common in that island, and in Sark it is found as a 

 common weed in cultivated ground and also on the cliffs ; so 

 it appears to have been introduced from Jersey by the early 

 colonists among the seeds they brought from that island, 

 unless it is a survival from that far distant time when both 

 Sark and Jersey were united to the continent. 



It is remarkable that not a single one of the 15 Guernsey 

 plants mentioned by Mr. E. Marquand as not occurring in 

 Britain proper ( Transactions, 1891, p. 131) has yet been found 

 in Sark. 



Of plants rare in Britain, having a census number less 

 than 20 in the London Catalogue, 8th edition, the following 

 21 have been found in Sark : — Lepigonum rupestre, Lavatera 

 arborea, Erodium moschatitm, Trifolium glomeratum, T. suffo- 

 catum, Lotus hispidus, L. angustissimus, Polycarpon tetraphyl- 

 lum, Tillcea muscosa, Valerianella carinata, Petasites fragrans, 

 Sibthorpia europea, Bartsia viscosa, Orobanche amethystea, 

 Euphorbia portlandica, Romulea columnoe, Allium triquetrum, 

 Scilla autumnalis, Juncus capitatus, Festuca uniglumis and 

 Asplenium lanceolatum, beside Gunnera scabra. Most of these 

 are fairly common and plentifully distributed throughout the 

 island. I was very pleased to be able to add one, viz. : 

 Asplenium ruta-muraria, to the list of ferns. 



I have been surprised at the absence of Geranium rober- 

 tianum and Draba verna. There are many favourable 

 localities, but as yet I have failed to obtain either of them. 



