242 PROCEEDINGS COTTESWOLD CLUB 1914 



probably (if the hybrid explanation is right) that in most 

 localities the stock has originated from one crossing, which 

 has been propagated vegetatively only, but at Haxey there 

 have either been several original hybrid-plants (differing from 

 each other), all of which have been reproduced vegetatively, 

 or else the plant produces fruit ; or it may be that the hybrid 

 has crossed with one of the parents, perhaps more than once." 

 {Irish Nat., Jan., 1914, p. 8). 



My (tentative) arrangement of the British Helosciadia 

 is as follows : — 



Helosciadiuni nodiflorum Koch, 

 f. vulgare. 

 f. ochreatum. 

 f. pseudo-repens. 

 Var. longipedunculatum F. Schultz. 



f. simulans. 

 H. repens Koch. 

 xH. Moorei Riddelsdell. 

 f. subnodiflorum. 

 f. subinundatum. 

 H. inundatum Koch, 

 var. fluitans Fr. 

 But as the genus Helosciadiuni is by English Botanists 

 usually grouped with Afium, it is as well to publish the same 

 list under that genus, in order that under either generic name, 

 the responsibihty may belong to the right person. Hence 

 we have : — 



Apium nodiflorum Reichb. fil. 

 f. vulgare. 

 f. ochreatum. 

 f. pseudo-repens. 

 Var. longipedunculatum F. Schultz. 



f. simulans. 

 A. repens Reichb. 

 xA. Moorei Riddelsdell. 

 f. subnodiflorum. 

 f. subinundatum. 

 A. inundatum Reichb. fil. 

 var. fluitans Fr. 



I 



