MoORK — On the Mosses of Ireland. 
359 
Hab. On stones, walls, and rocks. On trees at Killarney. This 
common moss varies much in appearance according to the 
localities where it grows. At Tore Cascade, Killarney, the 
var. b. stricta, grows on rocks between the waterfall and the 
bridge, with rigid slender stems 3-4 inches long. I have col- 
lected the same variety near Brandon Head. I have not seen 
the variety mentioned by Taylor in !F1. Hib., which has the 
capsules higher than the perichsetia. 
3. ;S'. maritimum (Br. et Sch.). Bryol. Europ. Monogr., p. 10, 
tab. 255. Bryol. Brit., p. 151, tab. 13. Grimmia maritima, 
Turner, Muse. Hib., tab. 3, f. 2. Muscol. Brit., p. 66. 
Hab. Crevices of maritime rocks round the whole of Ireland. This 
truly maritime moss grows well in places where the spray of 
the sea dashes over it. 
20. GLTPHOMiTEruM. Schwaegr. 
Capsule pedicellate, erect, globular. Calyptra covering the entire 
mature capsule, campanulate, split at the base and furrowed. 
Peristome single, of 1 6 teeth, converging in pairs, reflexed when 
dry. Distinguished from Grimmia chiefly by the large plicate 
calyptra and geminate teeth. 
1. G. Daviesii (Swaegr.). Suppl. 2, p. 41, tab. 113. Muscol. Brit., 
Ed. 2, p. 110. Bryol. Brit., p. 172, tab. 13. Grimmia Daviesii, 
Turner, Muscol. Hib., p. 24. 
Hab. On rocks of different geological formations in the northern 
and western counties. On the basalt at Giant's Causeway ; 
also at Fairhead, and Island of Bathlin, Antrim ; near Bran- 
don Head, Kerry. Yery fine on rocks above Kylemore Castle, 
Galway. Near Bantry, Cork, Miss Hutchins ; Glengariff and 
Killarney, Isaac Carroll. This pretty and very distinct Moss 
may be collected with its curious calyptrae in perfection about 
the 1st of May. 
[2. G. cylindraceum (^d^jlov). Elor. Hib., p. 21. 
Hab. Crevices of siliceous rocks on Blackwater-hill, Co. Kerry. I 
know nothing of this plant, save what is stated by the late Dr. 
Taylor, in the book quoted.] 
21. PTTCHOMiTRnjM. Br. et Schimp. 
Capsule oval, erect and pedicellate. Calyptra campanulate, deeply 
furrowed, laciniate at the base. Peristome single, of 16 deeply 
bifid teeth, into two unequal filiform segments. Inflorescence 
monoicous. Plants growing in close tufts on walls and rocks, 
intermediate in appearance between species of Grimmia and 
some kinds of Orthotrichum. 
