I860.] FLORA OF THE ISLE OF MAN, 165 



" The few rare Manx plants belong to an assemblage, the his- 

 tory of which has not yet been developed. They are essentially 

 western, either peculiar to the western parts of Britain and to 

 Ireland, or found chiefly on the western and south-western coasts 

 of Europe. They may possibly be fragments of the flora of the 

 great western extension of Europe, the existence of which geo- 

 logical investigations have rendered probable, during a period 

 beginning about the close of the Miocene epoch, and terminating 

 just before the historical. Our rarest plants, as the Sinapis mo- 

 nensis, Campanula hederacea, Pinguwula lusitanica, Euphorbia 

 portlandica, and Scirpus Savii are instances. Radiola Mille- 

 grana, Centunculus minimus, Linum angustifolium, and Carum 

 verticillatum, all plants worth gathering, were probably com- 

 panions of these." 



Thus far the Professor; let me now draw this rather long 

 paper to a close by adding the localities of some of our less com- 

 mon species^ for the benefit of intending visitors. 



Papaver somnifermn. A troublesome weed in gardens, but doubtless an 

 alien. 



Tumaria capreolata. Above the mouth of Ballure Glen and elsewhere, 

 but not frequent. 



Crambe marithna. Shore below Kirk Michael. " Near Dalby," Forbes. 



Tlilaspi arvense. Sandy fields, rarely. Near Ballaugh Eectory. 



Coclilearia officinalis, C. danica, C. alpina. Sea cliffs. The last only oc- 

 casionally, as near Peel, Port Soderic, and Coshnahowin. 



Lepidium campestre. As common as C. Bursa-pastoris in this parish and 

 in other parts. 



Lepidium SmitJiii. With the last, but less common. Near St. Jude's, 

 Andi'eas. " Castletown," Forbes. 



Erysimum cheiranthoides. Roadsides, Ballaugh and Jurby. " Probably 

 introduced," Forbes. 



Brassica {Sinapis) monensis. The Lhen, Andreas. Cranstal Point, etc. 

 Local but abundant. 



Reseda fruticulosa. " Near Castletown, and on a wall at Ballaugh Rec- 

 tory," Forbes (1848). Frequent on banks and field-borders in Bal- 

 laugh and Andreas (1859). 



Viola lactea. Jurby, Bride, and Andreas, frequent. 



Viola Curtisii. Fields. Creggins, Malew. Kii-k Michael. Far less fre- 

 quent than V. arvensis. 



Viola lutea. " On the mountains," Forbes. North Barrule. 



Drosera rotundifolia. Boggy ground, everywhere. 



