More —On Recent Additions to the Flora of Ireland. 285 
A. Stewart. Ascends to 2700 feet on Mangerton, and to 8300 on Carn 
Tual ; A. G. M. ^ 
Luzula sylvatica (Bich.) Reaches 3400 feet on Carn Tual ; A. G. M. 
Butomus umhellatus (Linn.) — 2. Ballycotton Bog, and abundant 
near Buttevant; Eev. T. AUin. — 7. In the Brosna at Parsonstown ; M. 
Dowd. 
Sparganium natans (Limio et Fries), — 11, Lakes near Keel, Done- 
gal; H. C. Hart. 
S. minimum (Fries). District 7- IN'ear Parsonstown ; Dowd, 
District 10. In a lake near Drum, Clones ; J. Bain. 
"^Aeorus Calamus (Linn.) District 12. Lakes at Hillsborough and 
Ballinahinch, Down, but most probably planted there; Templeton. 
Profusely on both sides of the Lagan, for six or seven miles between 
Lisburn and Moira, Down ; S. A. Stewart, 1866. This is an artificial 
cut, and the plant does not grow in Lough JN'eagh, nor in the river 
whence the Lagan Canal is drawn. Dr. Patrick Browne, in 1788, was 
aware of its occurrence in the county of Down, but does not give any 
special locality. According to the best authorities, Acorus Calamus is 
nowhere native in the west of Europe. 
Potamogeton rufeseens (Schrad.) — 2, Plentiful in the Blackwater at 
Buttevant; Rev. T. Allin. District 3. Ditch near Mountrath, Queen's 
County ; J. Morrison. 
P. polygonifolius (Pourr.) Var. with long, thin, narrowly-lanceolate 
submerged leaves ; var. pseudo-fluitans (Syme.) — 8. Plentiful in lakes 
and streams at Ballinahinch, Connemara ; A. G. M. This is the plant 
doubtfully given in our book as P. lanceolatus, and is very characteristic 
of streams connected with lakes in mountainous districts. The long- 
submerged leaves ai'e very like those of P. sparganiifoUus. 
P. Lonchites, " Tuck" (Syme), in " English Botany." District 5. 
In the Boyne below ISTavan. By this name Doctor Syme designates the 
Potamogeton from the Boyne, which we have doubtfully referred to P. 
heterophyllus. 
P. lucens (Wulf). District 7. In the Brosna, near Parsonstown ; 
M. Dowd. Var. deeipiens (Nolte.) District 5. In the Canal at ]N"avan ; 
Charles Bailey, 1868. 
P. crispus (Linn.) District 11. Kindrum Lakes, Fanet ; H. C. 
Hart. 
P. gramineus (Linn.) P. oltusifolius (M. et K ) — 2. Bogs near 
Youghal and Charleville, and in Ballybutler Lake, Cork; Rev. T. 
Allin. — 10. IN'ear Drum, Clones ; J. i>ain. 
P. pusillus (Linn.) District 7. Common near Parsonstown ; M. 
Dowd. District 10. Strabane Canal and Ballymagorry, Tyrone ; Dr. 
Sigerson. District 11. Kinlough, Fanet; H. C. Hart. 
P. pectinatus (Linn.)' District 6. Aran Island ; H. 0. Hart. 
Zannichellia palustris (Linn.) District 11, Glen Head, Donegal; 
H. C. Hart. 
Naias flexilis (Rostk.) — 8. In 18G9, 1 found it only in Lough Creg- 
duff, three-quarters of a mile west of Roundstono, and it is probable 
