PLANT DISTEIBTTTION. 179 



third year Scandix had dropped out of our flora, while Medicago 

 was growing " delightfully less." Last year the latter was 

 represented by a single plant. 



Ranunculus parviflorus grew in a newly turned corner of 

 the Ponsanooth burying-ground in 1886, but nothing further has 

 been seen of it. 



The summer of 1890 gave us the Borage {Borago officinalis), 

 on a new hedge at Trevince Moor, in Gwennap, and some 

 beautiful examples of the Viper's Bugloss {Echium vulgare), on 

 a rubbish heap at Perranwharf, composed largely of sweepings 

 from a flour mill. How the first-named got to Grwennap, I have 

 failed to ascertain ; but I think there can be no doubt that the 

 seed of the latter came to Perranwharf with grain from other 

 districts. 



During the following summer the Henbane flowered on 

 some ballast heaps at Devoran, having, in all probability, been 

 brought thither from some other place along the coast. 



A corn tield at St. Grluvias Burnt House gave us the Buck- 

 wheat {Fagopyrum exculentum), in large quantities in 1890. 

 Seed were produced in abundance ; but no plants have appeared 

 since. 



After the Perran Foundry was closed and the machinery 

 disposed of, Trifolium arvense sprang up in patches at the lower part 

 of the yard, and for a year or two it seemed to have established 

 itself in the valley. After a time, however, the number slowly 

 lessened, and five or six years ago the last of the plant was seen. 

 From what locality the plant was brought can only be conjectured, 

 but, that the seeds were introduced on the vehicles or attached 

 to the horses which came to remove the Foundry machinery 

 looks feasible. 



Trifolium suhterraneum is just as notable an instance of plant 

 wanderers as Trifolium arvense. As far as I am able to ascertain 

 there is no record of the plant growing in the locality either 

 before or since the year 1888, when a beautiful patch sprang up 

 outside the entrance to Pelean Farm. At first I was greatly 

 puzzled to account for the presence of such a stranger; but I 

 learned eventually that between the owner of the farm and a 

 relative who owned a large farm near Penzance — where 



