Some Interesting Bryophytes: 2. MossesAuthor(s): A. L. K. KingSource: The Irish Naturalists' Journal, Vol. 15, No. 8 (Oct., 1966), pp. 234-236Published by: Irish Naturalists' Journal Ltd.Stable URL: http://www.jstor.org/stable/25537067 .

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234

present in numbers and was the only mollusc found. Asellus aquaticus L. is

fairly common. The dominant Crustacea are Chydorus sphaericus (0. F. Mliller) and Cyclops agilis (Koch), which tare present in reasonable abundance. A few specimens of a brown Hydra were also recorded. In general, when the collections,

were made on 20th April, 1966, the fauna appeared to be rather sparse both in numlbers and in species. There was no trace of species like Cypris balnearia Mon.,

which have been found in European and North African hot springs and which are confined to thermal waters.

Temperature is known to have an effect on the size of cold blooded animals. Animals reared at a higher temperature are in general smaller in size. Adult females of Cyclops agilis from the hot spring averaged 0.91 mm. in length as compared with ,a recorded range for females of this species of from O.S to 1.45mm. (Gurney, 1933). Thus it would seem that the waters of the spring are not warm enough to produce large decreases in size like those recorded by Grainger and Khan (1966) in Cyclops viridis.

Trinity College, Dublin.

REFERENCES

Davies, G. L. and Hill, W. M. de C. (1965). A Thermal Spring in Co. Kiidare. Irish Nat. J., 15, 73-74

Grainger, J. N. R. and Khan, F. (1966). In preparation. Gurney, R. (1933). British Freshwater Copepoda, 3, The Ray Society, London.

SOME INTERESTING BRYOPHYTES: 2. MOSSES

By A. L. K. King

As with the Hepatics in Part 1 (p. 207 of this Volume) the following list contains only such mosses encountered in the field in recent years as are of interest in themselves. In most cases they are also new vice-county records.

Other commoner species found, which filled gaps in the Census Catalogue have been duly recorded but are not of sufficient interest to mention here.

There are again some overlooked specimens from Miss J. S. Thomson's

herbarium including one from A. W. Stelfox.

Sequence and nomenclature follow the Census Catalogue of British Mosses (3rd Edition), 1963, E. F. Warburg.

Sphagnum fuscus (Schimp.) Klinggr. In bog SW of Birr, at Carrig, North Tipperary, H10, June, 1965.

This easily recognized sphagnum is only recorded from fifteen of the forty Irish divisions.

Fissidens curnowii Mitt. In rock cleft in Coomshingaun corrie, Co. Waterford, H6, June, 1963. Rare

in Ireland except in south-west.

Fissidens cristatus Wils. On stony ground by shore of L. Derg at Kilibarron Quay, N Tipperary,

H10, June, 1965. On wall by R. Camcor above Kinnity, H18, June, 1965. This moss has either greatly extended its range or was, for some reason,

formerly overlooked. In the 2nd Edition of the Census Catalogue (1926) it was recorded from only seventeen Irish divisions. Now the number is thirty-seven.

Pleuridium acuminatum Lin$b.

On sandy floor of quarry, Grangegeeth, Co. Meath, H22, March, 1960. This plant seems to be uncommon in Ireland, although occurring in

eighteen divisions. Dicranum bonjeanii De Not.

In Raven's Glen, Glencree, Co. Wicklow, H20, March, 1962.

Marsh by Royal Canal west of Ferran's Lock, Co. Me^th,

H22 July, 1965. Marsh by L. Nahinch, N Tipperary, June, 1965. In great profusion and

fruiting freely with setae 5 inches in length. Fruit is rare *n this species which was already recorded for H10.

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235

Campylopus introflexus (Hedw.) Brid. This invading moss continues to spread with great rapidity. Instead

of being rare it is now widespread and is found in the most varied habitats. In the last few years it was found by me on cliff-tops in Donegal and Waterford, beside L. Ouler in the heart of the Wicklow Mountains on cut-away bog and hill moorland in N Tipperary and Longford and growing in profusion in the cracks of the rotting beam cf a disused canal lock-gate in Longford.

Pottia heimii (Hedw.) Fiirnr. In rough pasture by Lady's Island Lake, Co. Wexford, H12, May, 1961.

This rather rare sea-coast moss is recorded from less than half the Irish divisions.

Barbula spadicea (Mitt.) Braithw. By Golden Falls, Ballymore-Eustace, Co. Kildare, H19, J. F. Thompson,

May, 1939. (From iMiss J. S. Thomson's herbarium).

Tortella ftavovirens (Bruch) Broth. The records of this species were revised for the new Census Catalogue

of 1963. The following are admitted in the amended list: In dunes at Banna Strand, Co. Kerry, H2, June, 1952.

Sand-dunes at Curracloe, Co. Wexford, H12, August, 1950.

Railway embankment by the sea at Sutton, Co. Dublin, H21, May, 1954. Grimmia trichophylla Grev.

On basalt on Croghan Hill, Offaly, H18, March, 1962. Rare in Central Ireland.

Pohlia rothii (Correns) Broth. With Oligotrichum hercynicum in quarry by Losset Beg, near Creeslough,

Co. Donegal, H35, September, 1963.

In clumtp of Nardia scalaris in sand-pit by roadside near Aughavannagh, Co. Wicklow, H20, altitude 1,400 feet, March, 1964.

This moss was first found in Ireland by the writer in July, 1948, in Co. Roscommon. (Irish Naturalists' Journal, 10, No. 10). It is now recorded from ten

Irish divisions. Bryum bornholmense Winkelm. & Ruthe.

On cut-away bog by L. Nahinch, between Birr and Borrisokane, H10,

June, 1965.

This is only the fifth record for this species in Ireland. Mnium stellare Hedw.

On slumped clay in mouth of cave above L. Inchiquin, Co. Clare, H9,

May, 1962.

Growing through Trichostomum brachydontium in clefts of limestone

rocks, Glenade, Co. Leitrim H29, May, 1959.

This rather rare moss is mostly found in limestone districts but I have seen it growing on a very thin coating of drift on granite in heavy shade in a

Co. Dublin wood.

Mnium rugicum Laur.

In marsh by north end of Termoncarragh Lake, The Mullet, W Mayo,

H27, June, 1960.

On sand-dunes at Bonmahon, Co. Waterford, H6, May, 1964.

Mnium seligeri (Lindb.) Limpr. In marsh by lane behind Downhill, Ballina, E Mayo, H26, June, 1960.

In marsh by north end of Termoncarragh Lake, The Mullet, W Mayo,

H27, June, 1960.

In Morristown fen, near Newbridge, Co. Kildare H19, June, 1961.

In marshy ground, Bohernabreena, Co. Dublin, H21, June, 1937, J. S.

Thomson.

Marsh at Derry Hills, Clonaslee, Leix, H14, June, 1965.

By stream in Rockingham demesne, Boyle, Co. Roscommon, H25, May,

1940, J. S. Thomson.

These two species were formerly combined with Mnium affine but have now

been revised.

Bartramia ithyphylla Brid. Valley north of Corrig-na-binnian, Co. Limerick, H8, May, 1944, A. W.

Stelfox (From Miss Thomson's herbarium).

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236

Zygodon conoideus (Dicks.) Hook. & Tayl. On hedgerow stump near Summerhill, Co. Meath, H22, September, 1965.

This species is widespread in its occurrence but nowhere plentiful. Ulota bruchii Hornsch. ex Brid.

By R. Camcor a/bove Kinnity, Offaly, H18, June, 1965. This moss is only recorded from rather more than half the Irish divisions.

It may have been overlooked in others. Fontinalis squamosa Hedw.

In pool on cliff-top at Bunglass, near Slieve League, W Donegal, H35>

July, 1962. Campylium protensum (Brid.) Kindb.

Grassy bank by Grand Canal, near Prosperous, Co. Kiidare, H19, July, 1962.

.Roadside bank at Ballinrig, near Summerhill, Co. Meath, H22, October, 1960. Campylium elodest (Lindb.) Kindb.

Marsh by L. Nahinch, near Borrisokane, N Tipperary, H10, June, 1965.

Bog at Aghalee, Co. Antrim, H39, August, 1942, J. S. Thomson.

These two Campylium species are rather uncommon in Ireland.

Hygroamblystegium tenax (Hedw.) Jenn. On 'bridge wall at Porterstown, Co. Kiidare, H19, very sparsely, August,

1963. This species is uncommon.

Drepanocladus exannulatus var, exannulatus (B.S. & G.) Warnst.

Drain on Forth Mountain, Co. Wexford, H12, June, 1961.

In stream near Laragh Lake, Crovehy, W Donegal, H35, September, 1963.

The records of this species have been revised. It has now been noted in fourteen divisions. Isothecium holtii Kindb.

On granite by L. Dan, near Roundwood, Co. Wicklow, H20, July, 1960.

This species is rare, only known from seven Irish divisions.

Deerpark Road, Mount Merrion, Co. Dublin.

NEW PLANT RECORDS FOR CO. MAYO

(Botanical Society of the British Isles)

Contributed by F. H. Peering

Between the 3rd and lOtb July, 1965, a B.S.B.I. Meeting was held at

Westport, Co. Mayo. This had been chosen as it lay near the centre of an area which had been somewhat neglected during the Distribution Maps Scheme. One or two 10 km squares (had not (been visited during the scheme, and many others had lists of only one hundred and fifty or so.

The number of people who played a part In the week's work is difficult to estimate. Several local botanists joined us as their work permitted, others

were called away for odd days. Nevertheless we were able to visit about three squares each day, and fifteen in all. On two days the whole

party joined together to visit places of particular interest and richness. On

Tuesday, 6th Juliy, we skirted the south side of Clew Bay stopping for an hour In the fascinating wood at Old Head, north east of (Louisburgb, before dropping down to the north side of Mweelrea, where sand dune, salt marsh, moorland and mountain, combine to give superb botanizing country. Our combined efforts there raised the number of species recorded from one hundred and eighty-nine to three hundred and fifty-eight.

On the last day, Friday, 9th July, we joined a Leicester University party led by Dr G. Halliday at Keel Bridge, where the waters of Lough Carra flow into Lough Mask, for a day In that magnificent county whfre the limestone

meets the blanket bog along the borders of East and West Mayo. It was an unforgettable day in which we added about one hundred records to a square

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