198 
Proceedings of the Royal Irish Academy. 
Littorella lacustris (Linn.). Shor&weed. 
Local. On a muddy shore at Moorlough, 580 feet. 
Oedee LXIII. Amentifer^. 
Uuercus robiir (Linn.). Oak. 
Q. Eobur pedunculata. Peduncidate Oak. Frequent. 
* Var. 13. Q. R sessiliflora. This variety, described as rare and 
local in Ireland, observed by Dr. Moore in a few localities in Antrim, 
occurs with the other in the neighbourhood of Holyhill. 
Oedee LXXIII. Juncace^. 
^ Juncus squarrosus (Linn.). Heath Rush. 
On Leek bog 16 feet, and at Tillyard, about 800 feet, on the side 
of Knockavoe. 
Oedee LXXIY. Alismace^. 
Alisma plantago (Linn.). Great Water Plantain. 
"VYater trenches, Leckpatrick. Local ; not frequent. 
Triglochin palustre (Linn.). Marsh Arrow-grass. 
Ballyskeagh bog. 
Oedee LXXY. Typhaceje. 
Typha latifolia (Linn.). Great Reed-mace. 
Cloghcor. Becoming very scarce. 
Sparganium ramosum (Huds.). Branched Bur-reed. 
Water ditches, Leckpatrick brickfields. 
Oedee LXXYIII. Potamogetonace^. 
Potamotegon perfoliatus (Linn.). Perfoliate Pond-weed. 
Strabane Canal. Ballymagorry. 
^ Potamotegon pusillus (Linn.). Small Pond-weed. 
Same locality. 
Oedee LXXXI. Geamine^. 
Arundo phragmites (Linn.). Common Reed. 
Poyle bank, near canal. This plant is sometimes used for thatch. 
* Lolium temulentum (Linn.). Darnel. 
Cultivated fields. Occasionally found. 
This list, from which I have excluded all specimens about which 
I felt doubtful, furnishes some thirty additional plants, not previously 
recorded, to the Flora of our Tenth Botanical District. 
