POTAMOGETONACEÆ.

Potamogeton natans, Linn. P. polygonifolius, Pourr., 1400. P. rufescens, Schrad. Abundant in Burren River near Newcastle. P. pusillus, Linn. Burren River; bog-holes at Money scalp Lake; marsh near Lisnacree House.

NAIADACEÆ.

Zostera marina, Linn. Carlingford Lough.

CYPERACEÆ.

Schanus nigricans, Linn., 1800.

Cladium mariscus, R. Br. Sparingly on northern margin of Altnadua Lake near Castlewellan. We have no doubt that this is Templeton's station for this plant (which is of extreme rarity in District 12, and was believed to be now extinct), although Mr. Templeton's note does not correspond with the actual station (see note in Flor. N.E.I.); Altnadua Lake is the first lake on the road from Castlewellan to Rathfriland, and is distant two miles from the former.

Rhynchospora alba, Vahl, 350-1225. Pools by the Kilkeel River under Slieve Bingian, and abundant in a marsh a quarter of a mile S.W. of Colligan Bridge; marshes at the base of Slieve-na-brock; in some abundance in boggy ground by the Annalong River S.E. of the cave on Cove Mountain.

Eleocharis palustris, R. Br. E. multicaulis, Sm., 1110.

Scirpus maritimus, Linn. Muddy shores at Mill Bay and above Warrenpoint. S. sylvaticus, Linn. Sparingly in Tollymore Park. S. caspitosus, Linn., 2510. S. fluitans, Linn. Marshes at base of Slieve-na-brock; Rocky River near Hilltown; by Shimna River; lake in Narrow-water demesne. S. setaceus, Linn. Newcastle; Tollymore; "Maggie's Leap"; Kilkeel; Killowen; source of Kilbroney River. S. savii, S. and M., Newcastle; "Maggie's Leap"; Glassdrumman; Dunny Water Bridge; White Water; Narrow-water; Kilkeel.

Eriophorum vaginatum, Linn., 2055. E. polystachion, Linn., 2204.

Carex dioica, Linn. By the Causeway Yellow Water, Bloody Burn, and frequent on the mountain moors. C. pulicaris, Linn. C. arenaria, Linn. Sandy shores at Newcastle, Kilkeel, and Greencastle. C. vulpina, Linn. Salt marshes at Mill Bay and Narrow-water. C. remota, Linn. C. echinata, Murr., 2000. C. leporina, Linn. Sparingly on the lower grounds; in great abundance on the shores of Lough Island Reavy. C. goodenovii, Gay, 1400. C. pallescens, Linn. Tollymore Park. C. panicea, Linn., 1350. C. præcox, Jacq., Killowen, Spelga, Broughnamaddy. C. pilulifera, Linn., 2796. C. glauca, Scop., 2510. C. flava, Linn., 1400. C. hornschuchiana, Hoppe, 1700. C. distans, Linn. Shores near Newcastle, and south of Rostrevor. C. binervis, Sm., 2394. C. lævigata, Sm. Parks of Mourne and Tollymore. C. sylvatica, Huds. C. hirta, Linn. Rare; White Water, and near Newcastle. C. rostrata, Stokes, 1150.

GRAMINEÆ.

(Phalaris canariensis, Linn. Sands at Newcastle.) P. arundinacea, Linn.

Anthoxanthum odoratum, Linn., 2394.

Phleum arenarium, Linn. Common on sandhills at Newcastle. P. pratense, Linn.

Alopecurus geniculatus, Linn.

Nardus stricta, Linn., 2449.

Milium effusum, Linn. Wooded shore of lough south of Rostrevor. Not seen in Tollymore Park (Hart, Proc. R.I.A., 1884). Phragmites communis, Trin.

Psamma arenaria, R. & S. Sandy shores, Newcastle and Cranfield. Agrostis canina, Linn., 2300. A. vulgaris, With. Common. Var. B pumila, Lightf. Sandhills at Newcastle; east side of Slieve Bingian at 1200 feet; N.E. slope of Eagle Mountain at 1600 feet, growing only one inch high. A. alba, Linn., 2055. Common; growing four feet high at White Water.

Aira cæspitosa, Linn. A. flexuosa, Linn., 2796. A. caryophyllea, Linn., 1000. A. præcox, Linn., 1662.

Holcus lanatus, Linn., 1350. H. mollis, Linn. Common. A tall (4 feet), slender form at White Water.

Arrhenatherum elatius, M. & K.

Triodia decumbens, Beauv.

Melica uniflora, Retz.

Molinia cærulea, Moench., 2449.

Poa annua, Linn., 2450. P. trivialis, Linn. P. pratensis, Linn.,

1350.

Glyceria fluitans, R. Br., 1150.

Schlerochloa maritima, Lindl. Seashore south of Newcastle. S. distans, Bab. Warrenpoint. S. loliacea, Woods. By the White Water, and near Newcastle.

Briza media, Linn. Roadside between Warrenpoint and Narrow-water, and plentiful in a marsh near Narrow-water corn-mill.

Cynosurus cristatus, Linn.

Dactylus glomerata, Linn.

Festuca sciuroides, Roth. Near Newcastle and Warrenpoint; rare.

F. ovina, Linn. Common; the viviparous form replaces the normal on the high grounds, and ascends to the highest point of the range (2796 feet). The type and variety were gathered together on Slieve Muck at 1500 feet; our lowest note of the variety is 200 feet. F. rubra, Linn., 0-1600. F. sylvatica, Vill. Abundant by the Shimna and Spinkwee Rivers in Tollymore Park, and very luxuriant, some specimens measuring 6 and 7 feet high. Not seen in woods at Rostrevor (Wade's Planta Rariores, 1804). F. gigantea, Vill. Moygannon Glen; Mourne Park; Tollymore Park. F. arundinacea, Schreb. Newcastle and Tollymore Park; rare. F. pratensis, Huds. Rare; meadows by the Ghann River.

Bromus asper, Murr. B. sterilis, Linn. Abundant on roadsides from Killowen to Seafield, and sparingly near Warrenpoint gasworks.

Serrafaleus mollis, Parl.

Brachypodium sylvaticum, R. & S.

Triticum caninum, Huds. Rocky shore a mile south of Newcastle. Pool near Moore Lodge, Kilkeel.

T. repens, Linn. Near Kil

keel, Newcastle, and Rostrevor. T. junceum, Linn. Sandy shores at Newcastle, Kilkeel, and Greencastle.

Lolium perenne, Linn.

EQUISETACEÆ.

Equisetum arvense, Linn. E. maximum, Lamk. E. sylvaticum, Linn., 1000. E. limosum, Linn., 1000. Var. ẞ fluviatile, Linn. Rare. E. palustre, Linn. E. hyemale, Linn. Sparingly by the Kilbroney River above Newtown Bridge, and on the banks of the Yellow Water S.E. of Crocknafeola; abundant on the banks of the stream below Rocky River Bridge near Hilltown, where also a curious sport occurred, the stems bearing several lateral alternate sessile fruit-spikes. By the Annalong River a quarter of a mile below Dunny Water Bridge. Rev. C. H. Waddell has sent us a fresh specimen gathered by him by the waterfall on Thomas Mountain, above the ice-house, at 1700 feet. The only previous county Down record was an unsatisfactory one from Dundrum.

FILICES.

Cryptogramme crispa, R. Br., 1200-1700. Very rare, and on granite only, mostly as single plants, and not fruiting. South side of Slieve Donard, and Eagle Rock on north side of Donard. Cliffs of Slieve Beg. Cliffs of Slieve Bingian south of Blue Lough. Not observed on Shanslieve or Slieve-na-brock (Lett, Proc. B.N.F.C., 1885-86, app.), nor at Eagle Rock on Pigeon Rock Mountain (Barcroft, ibid.). The remarks of Mr. Hart (Proc. R.I.A., 1884, p. 240) as to the extermination of the species on the Mourne range are incorrect. It still grows on Slieve Bingian and elsewhere, as shown above.

Polypodium vulgare, Liun., 2449. P. phegopteris, Linn. On granite and slate rocks, 800-2000 feet. Northern slopes of Slieve Donard; Castles of Commedagh; Black Stairs on Shanslieve; Luke's Mountain; Slieve-na-glough; cliffs south of Blue Lough; Hare's Gap; by the Bann below Spelga; on the eastern and western slopes of Slieve Muck, and at 2000 feet on Slieve Muck North; cliffs of Eagle Mountain; Slieve Maganmore; northern shoulder of Slieve Meel More, and east face of Slieve Meel Beg at 2000 feet; Slieve Lamagan; southern and eastern cliff-ranges of Cove Mountain; glen N.E. of Bencrom; and on Chimney Rock Mountain. Not seen at Rostrevor (Robinson, Flor. N.E.I.).

Lastrea oreopteris, Presl., 20-2000. In some abundance on the lower grounds along the northern slope of the range from Slieve Donard to Slieve-na-man; plentiful by a small stream east of Kinahalla; sparingly by the Annalong River near Dunny Water Bridge; glen at Fofanny, banks of Rocky River, and Mill River below Slieve Lamagan; single plants, mostly seedlings, on cliffs south of Blue Lough (1300), near Cove Mountain cave (1400), cliffs of Eagle Mountain (1600), and slate rocks on Slieve Muck North (2000). L. filix-mas, Presl., 1500. Var. 8 L. abbreviata DC. 1300-1500. Abundant on cliffs of Eagle Mountain, and very distinct; new to district 12. L. dilatata, Presl., 2449. L. æmula, Brack. 100-1430; very local. Frequent throughout Tollymore Park; shady nook on cliffs on east face of Cove Mountain at 1400 feet. Polystichum aculeatum, Roth. Very rare. Sparingly in Tollymore Park, and in Rostrevor Wood. P. angulare, Newman. Cystopteris fragilis, Bernh., 800-2000. On dripping slate rocks, Black Stairs on Shanslieve; N. E. slope of Slieve-na-glough; Luke's Mountain; luxuriant on east face of Slieve Muck, and on Slieve Muck north at 2000 feet.

Athyrium filix-femina, Roth., 2449.

Asplenium adiantum-nigrum, Linn., 1600. A trichomanes, Linn., 1600. A. marinum, Linn. Abundant on slate rocks by the sea, south of Newcastle. A. ruta-muraria, Linn. Scolopendrium vulgare, Sym. Ceterach officinarum, Willd.

Rare.

Very sparingly on a wall at Tollymore
Not seen at Rostrevor (Crawford,

House, near Newcastle.
Flor. Ulst.) or Bryansford (Thompson, ibid.).

Blechnum boreale, Sw., 2449.

Pteris aquilina, Linn., 1400.

Hymenophyllum wilsoni, Hook., 150-1500. On boulders in the Shimna and Spinkwee Rivers in Tollymore Park; N. E. shoulder of Slieve Meel More; abundant on cliffs of Eagle Mountain; cliffs south of Blue Lough; Hare's Gap; Slieve Beg; Luke's Mountain ; in the cave on Cove Mountain (a variety with branched fronds). Templeton's station, "margin of Cove Lough" (Flor. N. E. I.), is a highly improbable one, the shores being low and swampy. Not observed on Slieve Maganmore (Hart,

Proc. R. I. A., 1884).