(8) 



beach, or growing on the rocks, is uncertain, and as no record exists of 

 its having been found there in recent times, it might be very properly 

 omitted in the enumeration of British plants. Oiu* only specimen was 

 given us many years ago as British, but the label does not condescend 

 to inform us where, or by whom, the accompanying specimen was 

 collected, so that it is at least possible that it may be foreign, and as 

 the specimen is well-fruited, this is not the less likely. 



We are informed by Professor Harvey that Hudson says of it, " In 

 Devonise passim;'''' should the passim however only refer to shore-picked 

 specimens, it may be quite correct, and yet the plant not a native of 

 the coast, as we have repeatedly found marine plants as well as animals 

 thrown on shore now and then or after long intervals, although they have 

 never been observed there in a living state. This is more likely to 

 take place on the southern or south-western shores of England, where 

 currents from the Atlantic shores of Em'ope may frequently deposit 

 examples of the vegetation of these countries. And it is very possibly 

 to these cm-rents we owe some at least of the rarer plants of our 

 southern shores, their spores having been carried thither by the cm-rents 

 from the south of Em-ope. 



^ JJIIK ^ 



CrSTOSEIRA BARBATA. 



EXPLANATION OF DISSECTIONS. 



Fig. 1. — «, receptacle ; b, vesicle. 

 2. — Section of receptacle. 

 3. — Spores and filaments. All magnified. 



