370 FILICES. [ Lastrea. 
LASTREA Presl. 
L. Thelypteris Presl. Marsh Fern. 
District — — — — — VWI ~ ~—~ — 
Native. Wet marshy places. Very rare indeed, but locall 
abundant. Peren. July—September. 
Vi. “In marshy grounds between Muckross house and the 
mines near the side of the road”: Mackay Rar. 1806. In 
the grounds at Muckross (J. Woods) Phytol. 1855, p. 125. 
Still abundant in Mackay’s station and sparingly near the 
Muckross Hotel boat-harbour on the Lower Lake: R.W.S. 
1888, and in 1912. At Ross Castle, Killarney (Dr. Balfour) 
Phytol. 1858, p. 1006. On Ross Island (Moore) Cyb. 1866. 
Still abundant in one locality on Ross Island near its western 
end: R.W.S. 1889, and in 1912. Sparingly near Cromaglan 
bridge, Upper Lake, Killarney: R.W.S. 1889. 
First record in 1806: Mackay Rar. 
This fern appears to be confined to the neighbourhood of 
the Killarney Lakes and to be unknown elsewhere in the 
south-west of Ireland. 
L. Oreopteris Presl. L. montana T. Moore. Sweet 
Mountain Fern. 
Districts I. II — IV. V. VI. Vil. — — 
Native. Mountain slopes, on banks, about stream-sides and 
other damp places. Locally abundant, but rare or absent 
over a great portion of the county. Peren. July— 
September. Calcifuge B. 
I. Abundant in a wood south of Glanmore Lake, Derreen, 
1894 ; sparingly in the Sheen valley north of Dromogorteen 
bridge ; abundant in the Slaheny valley and in the Roughty 
valley about Morley’s Bridge, 1894-1908: R.W.S.—ILI. 
Mountain slope near Gearha bridge, Blackwater valley, 
1911: Mrs. Jenner.—IV. A few plants on the east shore of 
Cloon Lough, Glencar (Hart) Journ. of Bot. 1882, p. 174. 
Sparingly on the roadside between Caragh and the Oolagh 
Lakes, 1904: R.W.S. At 1,600 feet on Carrantuohill, Reeks : 
Druce 1891. Sparingly in the Tomies wood, Lower Lake, 
Killarney, 1911: Mrs. Jenner —V. Abundant about Anascaul 
Lake and along the river to the south of Anascaul, Dingle 
Bay ; abundant in the upper Finglas valley south of Camp ; 
in Glanlough, Glanteenassig and Arraglen, all three localities 
lie to the south of Castlegregory ; between Kileummin and 
Cloghane near the Connor Hill road, 1890-1914 : R.W.S.— 
