2 
Ihe Irish Naturalist , 
January, 
The history of our knowledge of the plant is as follows : — 
Sowerby (English Botany, Ed. III., Vol. 4, pp. 102-3 
(1865) )y under Helosciadium inundatum, Koch, says : " Dr. 
D. Moore finds in the River Boyne, Co. Cavan, a very 
luxuriant form, which is nearly as large as H, nodiflorum, 
and has the lower leaves with the segments of the leaflets 
mostly linear or strapshaped, not setaceous ; the involucel 
of five or six leaves." 
The Supplement of 1891, forming Vol. XIII. of Sowerby's 
English Botany, p. 187, under Apium inundatum, Reichb. f., 
makes a new variety, viz. : " var. Moorei, Syme—A. inun- 
datum, Reichb. f., var. Moorei, Syme, ex Hanbury in London 
Catalogue of British Plants, ed. 8, p. 16 (1886) ; Heloscia- 
dium inundatum, Koch, var. Moorei, Boswell (Syme), in 
Botanical Exchange Club Report for 1876, p. 20 ; 1881, 
p. 51 ; and 1886, p. 153. A large, luxuriant form, nearly 
as large as H. nodiflorum, with the segments of the leaflets 
of the lower leaves linear or strap-shaped, not setaceous. 
Involucel of five or six bracts. Rare. River Boyne, Cavan, 
and Downpatrick, Down, Ireland. ... I have not seen 
a specimen of var. Moorei, and have, therefore, repeated 
the description given of it in Vol. IV., where it is mentioned 
without a name. Specimens distributed by Mr. S. A. 
Stewart from Quoile River, Downpatrick, Ireland, were 
considered by Professor Babington to be var. Moorei, but 
Mr. Boswell states that they are ' not at all like my H. 
inundatum, var. Moorei,^ see Exchange Club Report for 
1881, p. 51." 
Specimens from Dr. Moore are (i) in Herb. Boswell-Symc 
(in the possession of Mr. F. J. Hanbury), labelled 
^^Helosciadium inundatum, var., Sium inundatum, var., 
River Boyne, Co. Cavan, Dr. D. Moore " ; and (2) in Herb. 
C. C. Babington (in the possession of the Unrv^ersity of 
Cambridge), labelled " Helosciadium inundatum. In the 
River Boyne, Co. Cavan. D. Moore," with " H. Moorei, 
Syme," added ; and (3) in the National Herbarium at 
Dublin. These are nearly the stoutest specimens of the 
form which I have seen ; the first is that from which Syme 
named his variety. But (apparently) earlier than these is a 
